SDN World 3 Ship Design Thread

Thanas · **Joined:** 2004-06-26 07:49pm **Posts:** 5660

For all who says you can't built real real light cruisers in Springsharp:

Germany's Hamburg Klasse

Quote:

Hamburg, Germany Leichtern Kreuzer laid down 1922

Displacement:
12.161 t light; 12.583 t standard; 14.097 t normal; 15.309 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(805,13 ft / 787,40 ft) x 62,34 ft x (26,25 / 27,67 ft)
(245,40 m / 240,00 m) x 19,00 m x (8,00 / 8,43 m)

Armament:
12 - 6,00" / 152 mm 45,0 cal guns - 108,92lbs / 49,41kg shells, 150 per gun
Breech loading guns in turret on barbette mounts, 1922 Model
3 x Quad mounts on centreline ends, evenly spread
1 raised mount - superfiring
4 - 4,50" / 114 mm 45,0 cal guns - 45,95lbs / 20,84kg shells, 150 per gun
Dual purpose guns in deck and hoist mounts, 1922 Model
2 x Twin mounts on sides, evenly spread
8 - 1,57" / 40,0 mm 45,0 cal guns - 1,97lbs / 0,89kg shells, 150 per gun
Anti-air guns in deck mounts, 1922 Model
4 x Twin mounts on sides, evenly spread
16 - 0,79" / 20,0 mm 45,0 cal guns - 0,25lbs / 0,11kg shells, 300 per gun
Anti-air guns in deck mounts, 1922 Model
2 x 2 row octuple mounts on sides, evenly spread
Weight of broadside 1.511 lbs / 685 kg
8 - 21,0" / 533 mm, 26,25 ft / 8,00 m torpedoes - 1,678 t each, 13,424 t total
In 4 sets of deck mounted centre rotating tubes

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 6,00" / 152 mm 390,00 ft / 118,87 m 15,00 ft / 4,57 m
Ends: Unarmoured
Main Belt covers 76% of normal length

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 8,00" / 203 mm 6,00" / 152 mm 6,50" / 165 mm
2nd: 1,00" / 25 mm - -
3rd: 1,00" / 25 mm - -
4th: 1,00" / 25 mm - -

- Armoured deck - single deck: 3,00" / 76 mm For and Aft decks
Forecastle: 1,00" / 25 mm Quarter deck: 1,00" / 25 mm

- Conning towers: Forward 6,00" / 152 mm, Aft 0,00" / 0 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 79.521 shp / 59.323 Kw = 31,00 kts
Range 5.000nm at 19,00 kts
Bunker at max displacement = 2.727 tons

Complement:
646 - 840

Cost:
£2,580 million / $10,319 million

Distribution of weights at normal displacement:
Armament: 359 tons, 2,5%
- Guns: 345 tons, 2,4%
- Torpedoes: 13 tons, 0,1%
Armour: 3.535 tons, 25,1%
- Belts: 1.458 tons, 10,3%
- Armament: 540 tons, 3,8%
- Armour Deck: 1.462 tons, 10,4%
- Conning Tower: 75 tons, 0,5%
Machinery: 2.697 tons, 19,1%
Hull, fittings & equipment: 5.570 tons, 39,5%
Fuel, ammunition & stores: 1.936 tons, 13,7%
Miscellaneous weights: 0 tons, 0,0%

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
21.692 lbs / 9.839 Kg = 200,8 x 6,0 " / 152 mm shells or 2,5 torpedoes
Stability (Unstable if below 1.00): 1,00
Metacentric height 2,5 ft / 0,8 m
Roll period: 16,7 seconds
Steadiness - As gun platform (Average = 50 %): 71 %
- Recoil effect (Restricted arc if above 1.00): 0,43
Seaboat quality (Average = 1.00): 1,39

Hull form characteristics:
Hull has a flush deck,
a normal bow and a round stern
Block coefficient (normal/deep): 0,383 / 0,395
Length to Beam Ratio: 12,63 : 1
'Natural speed' for length: 28,06 kts
Power going to wave formation at top speed: 39 %
Trim (Max stability = 0, Max steadiness = 100): 51
Bow angle (Positive = bow angles forward): 25,00 degrees
Stern overhang: 6,56 ft / 2,00 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 20,00%, 23,95 ft / 7,30 m, 20,34 ft / 6,20 m
- Forward deck: 30,00%, 20,34 ft / 6,20 m, 20,34 ft / 6,20 m
- Aft deck: 35,00%, 20,34 ft / 6,20 m, 20,34 ft / 6,20 m
- Quarter deck: 15,00%, 20,34 ft / 6,20 m, 20,34 ft / 6,20 m
- Average freeboard: 20,63 ft / 6,29 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 72,3%
- Above water (accommodation/working, high = better): 139,5%
Waterplane Area: 29.871 Square feet or 2.775 Square metres
Displacement factor (Displacement / loading): 137%
Structure weight / hull surface area: 111 lbs/sq ft or 540 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0,98
- Longitudinal: 1,13
- Overall: 1,00
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform
Good seaboat, rides out heavy weather easily

So there you have it - a 6-inch light cruiser, going 31 knots top with 19knots cruising speed, range 5000, both good seaboat, normal integrity and a good gun platform.

Thanas · **Joined:** 2004-06-26 07:49pm **Posts:** 5660

And a German Scout Cruiser:

Quote:

Adler, Germany Spähkreuzer laid down 1922

Displacement:
3,366 t light; 3,498 t standard; 3,786 t normal; 4,017 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(602.25 ft / 590.55 ft) x 45.93 ft x (14.76 / 15.27 ft)
(183.56 m / 180.00 m) x 14.00 m x (4.50 / 4.65 m)

Armament:
6 - 6.00" / 152 mm 45.0 cal guns - 108.92lbs / 49.41kg shells, 150 per gun
Breech loading guns in turret on barbette mounts, 1922 Model
3 x Twin mounts on centreline ends, evenly spread
1 raised mount - superfiring
8 - 1.57" / 40.0 mm 45.0 cal guns - 1.97lbs / 0.89kg shells, 150 per gun
Dual purpose guns in deck mounts, 1922 Model
4 x Twin mounts on sides, evenly spread
4 - 0.79" / 20.0 mm 45.0 cal guns - 0.25lbs / 0.11kg shells, 150 per gun
Anti-air guns in deck mounts, 1922 Model
4 x Single mounts on sides amidships
Weight of broadside 670 lbs / 304 kg
8 - 21.0" / 533 mm, 26.25 ft / 8.00 m torpedoes - 1.678 t each, 13.424 t total
In 4 sets of deck mounted centre rotating tubes

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 3.20" / 81 mm 310.00 ft / 94.49 m 9.00 ft / 2.74 m
Ends: Unarmoured
Main Belt covers 81 % of normal length
Main belt does not fully cover magazines and engineering spaces

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 2.00" / 51 mm 2.00" / 51 mm 1.00" / 25 mm
2nd: 1.00" / 25 mm - -
3rd: 1.00" / 25 mm - -

- Box over machinery & magazines: 1.00" / 25 mm

- Conning towers: Forward 6.00" / 152 mm, Aft 0.00" / 0 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 22,456 shp / 16,752 Kw = 27.00 kts
Range 3,000nm at 16.00 kts
Bunker at max displacement = 519 tons

Complement:
240 - 313

Cost:
£0.784 million / $3.135 million

Distribution of weights at normal displacement:
Armament: 166 tons, 4.4 %
- Guns: 153 tons, 4.0 %
- Torpedoes: 13 tons, 0.4 %
Armour: 505 tons, 13.3 %
- Belts: 366 tons, 9.7 %
- Armament: 87 tons, 2.3 %
- Armour Deck: 20 tons, 0.5 %
- Conning Tower: 31 tons, 0.8 %
Machinery: 762 tons, 20.1 %
Hull, fittings & equipment: 1,947 tons, 51.4 %
Fuel, ammunition & stores: 420 tons, 11.1 %
Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
6,128 lbs / 2,780 Kg = 56.7 x 6.0 " / 152 mm shells or 1.4 torpedoes
Stability (Unstable if below 1.00): 1.00
Metacentric height 1.5 ft / 0.5 m
Roll period: 15.5 seconds
Steadiness - As gun platform (Average = 50 %): 71 %
- Recoil effect (Restricted arc if above 1.00): 0.51
Seaboat quality (Average = 1.00): 1.22

Hull form characteristics:
Hull has a flush deck,
a normal bow and a round stern
Block coefficient (normal/deep): 0.331 / 0.339
Length to Beam Ratio: 12.86 : 1
'Natural speed' for length: 24.30 kts
Power going to wave formation at top speed: 35 %
Trim (Max stability = 0, Max steadiness = 100): 58
Bow angle (Positive = bow angles forward): 25.00 degrees
Stern overhang: 3.28 ft / 1.00 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 20.00 %, 18.04 ft / 5.50 m, 13.78 ft / 4.20 m
- Forward deck: 30.00 %, 13.78 ft / 4.20 m, 13.78 ft / 4.20 m
- Aft deck: 35.00 %, 13.78 ft / 4.20 m, 13.78 ft / 4.20 m
- Quarter deck: 15.00 %, 13.78 ft / 4.20 m, 13.78 ft / 4.20 m
- Average freeboard: 14.12 ft / 4.30 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 81.4 %
- Above water (accommodation/working, high = better): 122.3 %
Waterplane Area: 16,059 Square feet or 1,492 Square metres
Displacement factor (Displacement / loading): 144 %
Structure weight / hull surface area: 80 lbs/sq ft or 392 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 1.00
- Longitudinal: 1.00
- Overall: 1.00
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform
Good seaboat, rides out heavy weather easily

Thanas · **Joined:** 2004-06-26 07:49pm **Posts:** 5660

And a 1.6kt German Destroyer.

You can built viable destroyer designs in Springsharp.

Quote:

Z22, Germany Destroyer laid down 1922

Displacement:
1,584 t light; 1,674 t standard; 1,770 t normal; 1,846 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(403.87 ft / 393.70 ft) x 39.37 ft x (9.84 / 10.12 ft)
(123.10 m / 120.00 m) x 12.00 m x (3.00 / 3.09 m)

Armament:
6 - 4.72" / 120 mm 45.0 cal guns - 53.17lbs / 24.12kg shells, 150 per gun
Breech loading guns in turret on barbette mounts, 1922 Model
3 x Twin mounts on centreline ends, majority forward
1 raised mount - superfiring
4 - 1.57" / 40.0 mm 45.0 cal guns - 1.97lbs / 0.89kg shells, 150 per gun
Dual purpose guns in deck mount, 1922 Model
1 x Quad mount on sides amidships
8 - 0.50" / 12.7 mm 45.0 cal guns - 0.06lbs / 0.03kg shells, 600 per gun
Machine guns in deck mounts, 1922 Model
2 x Quad mounts on sides amidships
Weight of broadside 327 lbs / 149 kg
16 - 20.9" / 530 mm, 26.25 ft / 8.00 m torpedoes - 1.661 t each, 26.570 t total
In 4 sets of deck mounted centre rotating tubes

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.50" / 13 mm 0.50" / 13 mm 0.50" / 13 mm

- Conning towers: Forward 6.00" / 152 mm, Aft 0.00" / 0 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 16,492 shp / 12,303 Kw = 27.00 kts
Range 3,000nm at 12.00 kts
Bunker at max displacement = 173 tons

Complement:
136 - 177

Cost:
£0.450 million / $1.799 million

Distribution of weights at normal displacement:
Armament: 103 tons, 5.8 %
- Guns: 76 tons, 4.3 %
- Torpedoes: 27 tons, 1.5 %
Armour: 37 tons, 2.1 %
- Armament: 18 tons, 1.0 %
- Conning Tower: 19 tons, 1.1 %
Machinery: 559 tons, 31.6 %
Hull, fittings & equipment: 885 tons, 50.0 %
Fuel, ammunition & stores: 185 tons, 10.5 %
Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
1,790 lbs / 812 Kg = 33.9 x 4.7 " / 120 mm shells or 0.6 torpedoes
Stability (Unstable if below 1.00): 1.07
Metacentric height 1.4 ft / 0.4 m
Roll period: 13.9 seconds
Steadiness - As gun platform (Average = 50 %): 71 %
- Recoil effect (Restricted arc if above 1.00): 0.42
Seaboat quality (Average = 1.00): 1.00

Hull form characteristics:
Hull has a flush deck,
a normal bow and a round stern
Block coefficient (normal/deep): 0.406 / 0.412
Length to Beam Ratio: 10.00 : 1
'Natural speed' for length: 19.84 kts
Power going to wave formation at top speed: 52 %
Trim (Max stability = 0, Max steadiness = 100): 71
Bow angle (Positive = bow angles forward): 25.00 degrees
Stern overhang: 3.28 ft / 1.00 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 20.00 %, 14.76 ft / 4.50 m, 11.48 ft / 3.50 m
- Forward deck: 30.00 %, 11.48 ft / 3.50 m, 11.48 ft / 3.50 m
- Aft deck: 35.00 %, 11.48 ft / 3.50 m, 11.48 ft / 3.50 m
- Quarter deck: 15.00 %, 11.48 ft / 3.50 m, 11.48 ft / 3.50 m
- Average freeboard: 11.75 ft / 3.58 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 118.9 %
- Above water (accommodation/working, high = better): 84.2 %
Waterplane Area: 9,575 Square feet or 890 Square metres
Displacement factor (Displacement / loading): 122 %
Structure weight / hull surface area: 65 lbs/sq ft or 319 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.98
- Longitudinal: 1.21
- Overall: 1.00
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is cramped
Ship has slow, easy roll, a good, steady gun platform

Steve

Shouldn't it have depth charges?

Fin: I found Wiki has a series on naval armor, decent entries. Best I could think of ATM, but, eh, it's not politics or anything controversial to inspire malicious changes to facts and stuff.

And Norade?

Quote:

PSS Mythological, Portugal Battleship laid down 1920

Displacement:
47,127 t light; 50,035 t standard; 52,326 t normal; 54,159 t full load

I see two problems here. A) I told you 1922 as a minimal laydown date. I meant it. B) See what I just conveniently bolded for you? You just breached the 50,000T cap for 1925, so if you don't lower it you can lay it down in 1926, not 1922.

And my problem isn't you having 16"/52 caliber guns, but that you haven't displayed any progression at all in your weapons but simply jumped to the most awesome warship you could conceive and then intentionally laid them all early enough that you could have an entire run at game start instead of still building some.

So, in summation. Raise the laying date to 1926 as-is on the design, or cut it a thousand tons or so standard to get 1922 as your laying date.

Thanas · **Joined:** 2004-06-26 07:49pm **Posts:** 5660

Steve wrote:

Shouldn't it have depth charges?

It should have. But Springsharp refuses to add them in the text, despite me putting them into the ship calculater. I was going for 4 racks with a total of 32 depth charges.

Steve

Ah. Another 3b3 error. I wouldn't mind seeing the engine weight slider function myself....

Norseman · **Joined:** 2004-07-02 10:20am **Posts:** 1350

History of Brazilian Battleship Design
Being a brief description of Brazilian battleship development from the first dreadnaught to the latest 1925 designs. I haven't yet found names for the various battleship classes so forgive me if I use the year construction began instead.

Model 1909 Battleship
Displacement: 20 111 Standard Tons
Speed: 21.3 knots
Range: 7000 nm at 10 knots
Weaponry: 10 x 12 inch guns in 5 double turrets
Main Armour Belt: 11 inches
Note: Same gun layout as HMS Dreadnaught

Model 1911 Battleship
Displacement: 23 190 Standard Tons
Speed: 21.8 knots
Range: 7000 nm at 10 knots
Weaponry: 10 x 13.5 inch guns in 5 double turrets
Main Armour Belt: 12 inches
Note: Same gun layout as HMS Dreadnaught.

Model 1913 Battleship
Displacement: 25 710 Standard Tons
Speed: 22.3 knots
Range: 8000 nm at 10 knots
Weaponry: 8 x 15 inch guns in 4 double turrets
Main Armour Belt: 13 inches
Note: First Brazilian battleship with superfiring turrets. Though the number of guns decline from 10 to 8 this was considered acceptable since the number of guns in the broadside remained constant. This was also the battleship that broke the vicious cycle of the Maritime Self-Defence Force constantly having to upgun their designs.

Model 1915 Battleship
Displacement: 29 299 Standard Tons
Speed: 23 knots
Range: 12000 nm at 10 knots, or 7000 at 12 knots
Weaponry: 9 x 15 inch guns in 3 triple turrets
Main Armour Belt: 13 inches
Note: First Brazilian battleship with triple turrets. Also noticeable for its greatly extended range, it was these battleships that helped intervene in the Congolese revolution.

Model 1917 Battleship
Displacement: 34 771 Standard Tons
Speed: 23.7 knots
Range: 7000 nm at 12 knots
Weaponry: 12 x 15 inch guns in 4 triple turrets
Main Armour Belt: 13.5 inches
Note: First Brazilian battleship with four triple turrets. Also the first to use the improved 24.5 inch torpedoes. A greatly enhanced design, but still only barely up to speed with that of other navies.

Model 1919 Battleship
Displacement: 42 781 Standard Tons
Speed: 24.5 knots
Range: 9000 nm at 15 knots
Weaponry: 12 x 16.5 inch guns in 4 triple turrets
Main Armour Belt: 13.5 inches
Note: First Brazilian ship using the All or Nothing armour layout. This design continued the trend of increased range and increased cruising speed.

Model 1921 Battleship
Displacement: 44 162 Standard Tons
Speed: 24.3 knots
Range: 10000 nm at 15 knots
Weaponry: 12 x 16.5 inch guns in 4 triple turrets
Main Armour Belt: 13.5 inches
Note: Slightly larger and heavier version of the Model 1919s.

Model 1923 Battleship
Displacement: 45 533 Standard Tons
Speed: 24.2 knots
Range: 10000 nm at 15 knots
Weaponry: 12 x 16.5 inch guns in 4 triple turrets
Main Armour Belt: 13.5 inches
Note: Slightly larger and heavier version of the Model 1919s.

Model 1925 Battleship
Displacement: 48 607 Standard Tons
Speed: 24.7 knots
Range: 10000 nm at 15 knots
Weaponry: 12 x 16.5 inch guns in 4 triple turrets
Main Armour Belt: 13.5 inches
Note: Continues the developments of the preceding series, but adds improved damage control and deck armour.

Thanas · **Joined:** 2004-06-26 07:49pm **Posts:** 5660

Could you post the Springsharp characteristics of the ships?

Norseman · **Joined:** 2004-07-02 10:20am **Posts:** 1350

Thanas wrote:

Could you post the Springsharp characteristics of the ships?

I've posted Springsharps of several of them but it seems that each time I do so there's a dozen unrelated posts and my design gets relegated to the sidelines.

That said...

Model 1909

Code:

Rio de Janeiro, FSR of Brazil Battleship laid down 1909

Displacement:
   19,150 t light; 20,111 t standard; 21,151 t normal; 21,982 t full load

Dimensions: Length overall / water x beam x draught
   565.21 ft / 550.00 ft x 82.00 ft x 29.00 ft (normal load)
   172.27 m / 167.64 m x 24.99 m  x 8.84 m

Armament:
      10 - 12.00" / 305 mm guns (5x2 guns), 864.00lbs / 391.90kg shells, 1904 Model
     Breech loading guns in turrets (on barbettes)
     on centreline ends, majority forward
      8 - 6.00" / 152 mm guns in single mounts, 108.00lbs / 48.99kg shells, 1906 Model
     Breech loading guns in deck mounts with hoists
     on side, all amidships
      12 - 1.57" / 40.0 mm guns (6x2 guns), 1.95lbs / 0.88kg shells, 1905 Model
     Quick firing guns in deck mounts with hoists
     on side, evenly spread
      12 - 0.50" / 12.7 mm guns (6x2 guns), 0.06lbs / 0.03kg shells, 1919 Model
     Machine guns in deck mounts 
     on side, evenly spread
   Weight of broadside 9,528 lbs / 4,322 kg
   Shells per gun, main battery: 100
   2 - 21.0" / 533.4 mm submerged torpedo tubes

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   11.0" / 279 mm   315.00 ft / 96.01 m   12.00 ft / 3.66 m
   Ends:   5.00" / 127 mm   235.00 ft / 71.63 m   22.00 ft / 6.71 m
   Upper:   8.00" / 203 mm   315.00 ft / 96.01 m   11.00 ft / 3.35 m
     Main Belt covers 88 % of normal length

   - Torpedo Bulkhead:
      2.00" / 51 mm   550.00 ft / 167.64 m   25.00 ft / 7.62 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   11.0" / 279 mm   10.0" / 254 mm      11.0" / 279 mm
   2nd:   5.00" / 127 mm   4.00" / 102 mm      4.00" / 102 mm
   3rd:         -            -         1.00" / 25 mm

   - Armour deck: 2.00" / 51 mm, Conning tower: 11.00" / 279 mm

Machinery:
   Oil fired boilers, steam turbines, 
   Direct drive, 2 shafts, 30,005 shp / 22,384 Kw = 21.35 kts
   Range 7,000nm at 10.00 kts
   Bunker at max displacement = 1,872 tons

Complement:
   876 - 1,140

Cost:
   £1.862 million / $7.447 million

Distribution of weights at normal displacement:
   Armament: 1,191 tons, 5.6 %
   Armour: 8,885 tons, 42.0 %
      - Belts: 4,054 tons, 19.2 %
      - Torpedo bulkhead: 1,018 tons, 4.8 %
      - Armament: 2,450 tons, 11.6 %
      - Armour Deck: 1,182 tons, 5.6 %
      - Conning Tower: 181 tons, 0.9 %
   Machinery: 1,364 tons, 6.4 %
   Hull, fittings & equipment: 7,510 tons, 35.5 %
   Fuel, ammunition & stores: 2,001 tons, 9.5 %
   Miscellaneous weights: 200 tons, 0.9 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     28,802 lbs / 13,064 Kg = 33.3 x 12.0 " / 305 mm shells or 5.4 torpedoes
   Stability (Unstable if below 1.00): 1.00
   Metacentric height 3.7 ft / 1.1 m
   Roll period: 17.8 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.83
   Seaboat quality  (Average = 1.00): 1.43

Hull form characteristics:
   Hull has raised forecastle
   Block coefficient: 0.566
   Length to Beam Ratio: 6.71 : 1
   'Natural speed' for length: 23.45 kts
   Power going to wave formation at top speed: 45 %
   Trim (Max stability = 0, Max steadiness = 100): 49
   Bow angle (Positive = bow angles forward): 20.00 degrees
   Stern overhang: 5.00 ft / 1.52 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      28.04 ft / 8.55 m
      - Forecastle (18 %):   22.00 ft / 6.71 m (20.00 ft / 6.10 m aft of break)
      - Mid (50 %):      17.85 ft / 5.44 m
      - Quarterdeck (18 %):   17.85 ft / 5.44 m
      - Stern:      17.85 ft / 5.44 m
      - Average freeboard:   19.35 ft / 5.90 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 87.3 %
      - Above water (accommodation/working, high = better): 127.7 %
   Waterplane Area: 31,951 Square feet or 2,968 Square metres
   Displacement factor (Displacement / loading): 99 %
   Structure weight / hull surface area: 159 lbs/sq ft or 776 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.95
      - Longitudinal: 1.62
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is adequate
   Room for accommodation and workspaces is excellent
   Ship has slow, easy roll, a good, steady gun platform
   Good seaboat, rides out heavy weather easily

Model 1911

Code:

Rio de Janeiro, FSR of Brazil Battleship laid down 1911

Displacement:
   21,964 t light; 23,190 t standard; 24,233 t normal; 25,067 t full load

Dimensions: Length overall / water x beam x draught
   593.21 ft / 578.00 ft x 92.00 ft x 29.00 ft (normal load)
   180.81 m / 176.17 m x 28.04 m  x 8.84 m

Armament:
      10 - 13.50" / 343 mm guns (5x2 guns), 1,230.19lbs / 558.00kg shells, 1907 Model
     Breech loading guns in turrets (on barbettes)
     on centreline ends, majority forward
      8 - 6.00" / 152 mm guns in single mounts, 108.00lbs / 48.99kg shells, 1906 Model
     Breech loading guns in deck mounts with hoists
     on side, all amidships
      12 - 1.57" / 40.0 mm guns (6x2 guns), 1.95lbs / 0.88kg shells, 1905 Model
     Quick firing guns in deck mounts with hoists
     on side, evenly spread
      12 - 0.50" / 12.7 mm guns (6x2 guns), 0.06lbs / 0.03kg shells, 1919 Model
     Machine guns in deck mounts 
     on side, evenly spread
   Weight of broadside 13,190 lbs / 5,983 kg
   Shells per gun, main battery: 100
   2 - 21.0" / 533.4 mm submerged torpedo tubes

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   12.0" / 305 mm   320.00 ft / 97.54 m   12.00 ft / 3.66 m
   Ends:   5.00" / 127 mm   258.00 ft / 78.64 m   22.00 ft / 6.71 m
   Upper:   8.00" / 203 mm   320.00 ft / 97.54 m   11.00 ft / 3.35 m
     Main Belt covers 85 % of normal length
     Main belt does not fully cover magazines and engineering spaces

   - Torpedo Bulkhead:
      2.00" / 51 mm   578.00 ft / 176.17 m   25.00 ft / 7.62 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   11.0" / 279 mm   10.0" / 254 mm      10.0" / 254 mm
   2nd:   5.00" / 127 mm   4.00" / 102 mm      4.00" / 102 mm
   3rd:         -            -         1.00" / 25 mm

   - Armour deck: 2.00" / 51 mm, Conning tower: 11.00" / 279 mm

Machinery:
   Oil fired boilers, steam turbines, 
   Geared drive, 2 shafts, 34,994 shp / 26,106 Kw = 21.81 kts
   Range 7,000nm at 10.00 kts
   Bunker at max displacement = 1,877 tons

Complement:
   970 - 1,262

Cost:
   £2.353 million / $9.410 million

Distribution of weights at normal displacement:
   Armament: 1,649 tons, 6.8 %
   Armour: 9,726 tons, 40.1 %
      - Belts: 4,422 tons, 18.2 %
      - Torpedo bulkhead: 1,069 tons, 4.4 %
      - Armament: 2,663 tons, 11.0 %
      - Armour Deck: 1,373 tons, 5.7 %
      - Conning Tower: 198 tons, 0.8 %
   Machinery: 1,420 tons, 5.9 %
   Hull, fittings & equipment: 8,969 tons, 37.0 %
   Fuel, ammunition & stores: 2,269 tons, 9.4 %
   Miscellaneous weights: 200 tons, 0.8 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     29,778 lbs / 13,507 Kg = 24.2 x 13.5 " / 343 mm shells or 5.5 torpedoes
   Stability (Unstable if below 1.00): 1.05
   Metacentric height 4.9 ft / 1.5 m
   Roll period: 17.5 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.74
   Seaboat quality  (Average = 1.00): 1.39

Hull form characteristics:
   Hull has raised forecastle
   Block coefficient: 0.550
   Length to Beam Ratio: 6.28 : 1
   'Natural speed' for length: 24.04 kts
   Power going to wave formation at top speed: 45 %
   Trim (Max stability = 0, Max steadiness = 100): 50
   Bow angle (Positive = bow angles forward): 20.00 degrees
   Stern overhang: 5.00 ft / 1.52 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      28.04 ft / 8.55 m
      - Forecastle (18 %):   22.00 ft / 6.71 m (20.00 ft / 6.10 m aft of break)
      - Mid (50 %):      17.85 ft / 5.44 m
      - Quarterdeck (18 %):   17.85 ft / 5.44 m
      - Stern:      17.85 ft / 5.44 m
      - Average freeboard:   19.35 ft / 5.90 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 92.6 %
      - Above water (accommodation/working, high = better): 134.0 %
   Waterplane Area: 37,111 Square feet or 3,448 Square metres
   Displacement factor (Displacement / loading): 93 %
   Structure weight / hull surface area: 171 lbs/sq ft or 837 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.92
      - Longitudinal: 1.51
      - Overall: 0.96
   Caution: Hull subject to strain in open-sea
   Hull space for machinery, storage, compartmentation is adequate
   Room for accommodation and workspaces is excellent
   Ship has slow, easy roll, a good, steady gun platform
   Good seaboat, rides out heavy weather easily

Model 1913

Code:

Mato Grosso, FSR of Brazil Battleship laid down 1913

Displacement:
   24,350 t light; 25,710 t standard; 26,876 t normal; 27,809 t full load

Dimensions: Length overall / water x beam x draught
   623.21 ft / 608.00 ft x 97.00 ft x 29.00 ft (normal load)
   189.95 m / 185.32 m x 29.57 m  x 8.84 m

Armament:
      8 - 15.00" / 381 mm guns (4x2 guns), 1,687.50lbs / 765.44kg shells, 1912 Model
     Breech loading guns in turrets (on barbettes)
     on centreline ends, evenly spread
      10 - 6.00" / 152 mm guns in single mounts, 108.00lbs / 48.99kg shells, 1906 Model
     Breech loading guns in deck mounts with hoists
     on side, all amidships
      12 - 1.57" / 40.0 mm guns (6x2 guns), 1.95lbs / 0.88kg shells, 1905 Model
     Quick firing guns in deck mounts with hoists
     on side, evenly spread
      12 - 0.50" / 12.7 mm guns (6x2 guns), 0.06lbs / 0.03kg shells, 1919 Model
     Machine guns in deck mounts 
     on side, evenly spread
   Weight of broadside 14,604 lbs / 6,624 kg
   Shells per gun, main battery: 100
   4 - 24.5" / 622.3 mm submerged torpedo tubes

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   13.0" / 330 mm   360.00 ft / 109.73 m   12.00 ft / 3.66 m
   Ends:   5.00" / 127 mm   248.00 ft / 75.59 m   22.00 ft / 6.71 m
   Upper:   8.00" / 203 mm   360.00 ft / 109.73 m   11.00 ft / 3.35 m
     Main Belt covers 91 % of normal length
     Main belt does not fully cover magazines and engineering spaces

   - Torpedo Bulkhead:
      2.00" / 51 mm   608.00 ft / 185.32 m   25.00 ft / 7.62 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   11.0" / 279 mm   10.0" / 254 mm      10.0" / 254 mm
   2nd:   5.00" / 127 mm   4.00" / 102 mm      4.00" / 102 mm
   3rd:         -            -         1.00" / 25 mm

   - Armour deck: 2.00" / 51 mm, Conning tower: 11.00" / 279 mm

Machinery:
   Oil fired boilers, steam turbines, 
   Geared drive, 2 shafts, 40,003 shp / 29,842 Kw = 22.29 kts
   Range 8,000nm at 10.00 kts
   Bunker at max displacement = 2,099 tons

Complement:
   1,049 - 1,364

Cost:
   £2.842 million / $11.368 million

Distribution of weights at normal displacement:
   Armament: 1,826 tons, 6.8 %
   Armour: 10,284 tons, 38.3 %
      - Belts: 4,935 tons, 18.4 %
      - Torpedo bulkhead: 1,125 tons, 4.2 %
      - Armament: 2,489 tons, 9.3 %
      - Armour Deck: 1,523 tons, 5.7 %
      - Conning Tower: 213 tons, 0.8 %
   Machinery: 1,568 tons, 5.8 %
   Hull, fittings & equipment: 10,473 tons, 39.0 %
   Fuel, ammunition & stores: 2,526 tons, 9.4 %
   Miscellaneous weights: 200 tons, 0.7 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     34,308 lbs / 15,562 Kg = 20.3 x 15.0 " / 381 mm shells or 6.2 torpedoes
   Stability (Unstable if below 1.00): 1.09
   Metacentric height 5.6 ft / 1.7 m
   Roll period: 17.1 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.66
   Seaboat quality  (Average = 1.00): 1.38

Hull form characteristics:
   Hull has raised forecastle
   Block coefficient: 0.550
   Length to Beam Ratio: 6.27 : 1
   'Natural speed' for length: 24.66 kts
   Power going to wave formation at top speed: 45 %
   Trim (Max stability = 0, Max steadiness = 100): 51
   Bow angle (Positive = bow angles forward): 20.00 degrees
   Stern overhang: 5.00 ft / 1.52 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      28.04 ft / 8.55 m
      - Forecastle (18 %):   22.00 ft / 6.71 m (20.00 ft / 6.10 m aft of break)
      - Mid (50 %):      17.85 ft / 5.44 m
      - Quarterdeck (18 %):   17.85 ft / 5.44 m
      - Stern:      17.85 ft / 5.44 m
      - Average freeboard:   19.35 ft / 5.90 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 92.6 %
      - Above water (accommodation/working, high = better): 137.4 %
   Waterplane Area: 41,159 Square feet or 3,824 Square metres
   Displacement factor (Displacement / loading): 95 %
   Structure weight / hull surface area: 185 lbs/sq ft or 901 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.95
      - Longitudinal: 1.49
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is adequate
   Room for accommodation and workspaces is excellent
   Ship has slow, easy roll, a good, steady gun platform
   Good seaboat, rides out heavy weather easily.

Model 1915

Code:

Rio de Janeiro, FSR of Brazil Battleship laid down 1915

Displacement:
   27,712 t light; 29,299 t standard; 31,011 t normal; 32,381 t full load

Dimensions: Length overall / water x beam x draught
   645.21 ft / 630.00 ft x 98.00 ft x 30.00 ft (normal load)
   196.66 m / 192.02 m x 29.87 m  x 9.14 m

Armament:
      9 - 15.00" / 381 mm guns (3x3 guns), 1,687.50lbs / 765.44kg shells, 1906 Model
     Breech loading guns in turrets (on barbettes)
     on centreline ends, majority forward
      16 - 6.00" / 152 mm guns in single mounts, 108.00lbs / 48.99kg shells, 1905 Model
     Breech loading guns in deck mounts with hoists
     on side, all amidships
      8 - 3.00" / 76.2 mm guns in single mounts, 13.50lbs / 6.12kg shells, 1915 Model
     Anti-aircraft guns in deck mounts with hoists
     on side, evenly spread
      16 - 1.57" / 40.0 mm guns in single mounts, 1.95lbs / 0.88kg shells, 1915 Model
     Anti-aircraft guns in deck mounts 
     on side, evenly spread
      12 - 0.50" / 12.7 mm guns in single mounts, 0.06lbs / 0.03kg shells, 1915 Model
     Machine guns in deck mounts 
     on side, evenly spread
   Weight of broadside 17,055 lbs / 7,736 kg
   Shells per gun, main battery: 100
   4 - 21.0" / 533.4 mm submerged torpedo tubes

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   13.0" / 330 mm   382.00 ft / 116.43 m   12.00 ft / 3.66 m
   Ends:   6.00" / 152 mm   248.00 ft / 75.59 m   22.00 ft / 6.71 m
   Upper:   6.00" / 152 mm   382.00 ft / 116.43 m   11.00 ft / 3.35 m
     Main Belt covers 93 % of normal length

   - Torpedo Bulkhead:
      2.00" / 51 mm   630.00 ft / 192.02 m   25.00 ft / 7.62 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   15.0" / 381 mm   9.00" / 229 mm      10.0" / 254 mm
   2nd:   5.00" / 127 mm   4.00" / 102 mm      4.00" / 102 mm
   3rd:         -            -         1.00" / 25 mm

   - Armour deck: 4.00" / 102 mm, Conning tower: 12.00" / 305 mm

Machinery:
   Oil fired boilers, steam turbines, 
   Geared drive, 2 shafts, 49,418 shp / 36,866 Kw = 23.03 kts
   Range 12,000nm at 10.00 kts
   Bunker at max displacement = 3,081 tons

Complement:
   1,167 - 1,518

Cost:
   £4.397 million / $17.587 million

Distribution of weights at normal displacement:
   Armament: 2,132 tons, 6.9 %
   Armour: 12,244 tons, 39.5 %
      - Belts: 4,977 tons, 16.1 %
      - Torpedo bulkhead: 1,166 tons, 3.8 %
      - Armament: 2,547 tons, 8.2 %
      - Armour Deck: 3,298 tons, 10.6 %
      - Conning Tower: 255 tons, 0.8 %
   Machinery: 1,872 tons, 6.0 %
   Hull, fittings & equipment: 11,265 tons, 36.3 %
   Fuel, ammunition & stores: 3,299 tons, 10.6 %
   Miscellaneous weights: 200 tons, 0.6 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     36,332 lbs / 16,480 Kg = 21.5 x 15.0 " / 381 mm shells or 6.3 torpedoes
   Stability (Unstable if below 1.00): 1.08
   Metacentric height 5.7 ft / 1.7 m
   Roll period: 17.3 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.71
   Seaboat quality  (Average = 1.00): 1.29

Hull form characteristics:
   Hull has raised forecastle
   Block coefficient: 0.586
   Length to Beam Ratio: 6.43 : 1
   'Natural speed' for length: 25.10 kts
   Power going to wave formation at top speed: 46 %
   Trim (Max stability = 0, Max steadiness = 100): 54
   Bow angle (Positive = bow angles forward): 20.00 degrees
   Stern overhang: 5.00 ft / 1.52 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      28.04 ft / 8.55 m
      - Forecastle (18 %):   22.00 ft / 6.71 m (20.00 ft / 6.10 m aft of break)
      - Mid (50 %):      17.85 ft / 5.44 m
      - Quarterdeck (18 %):   17.85 ft / 5.44 m
      - Stern:      17.85 ft / 5.44 m
      - Average freeboard:   19.35 ft / 5.90 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 93.3 %
      - Above water (accommodation/working, high = better): 133.8 %
   Waterplane Area: 44,568 Square feet or 4,140 Square metres
   Displacement factor (Displacement / loading): 93 %
   Structure weight / hull surface area: 184 lbs/sq ft or 898 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.92
      - Longitudinal: 1.35
      - Overall: 0.95
   Caution: Hull subject to strain in open-sea
   Hull space for machinery, storage, compartmentation is adequate
   Room for accommodation and workspaces is excellent
   Ship has slow, easy roll, a good, steady gun platform
   Good seaboat, rides out heavy weather easily

Model 1917

Code:

Acre, FSR of Brazil Battleship laid down 1917

Displacement:
   32,797 t light; 34,771 t standard; 36,337 t normal; 37,589 t full load

Dimensions: Length overall / water x beam x draught
   697.21 ft / 682.00 ft x 105.00 ft x 30.00 ft (normal load)
   212.51 m / 207.87 m x 32.00 m  x 9.14 m

Armament:
      12 - 15.00" / 381 mm guns (4x3 guns), 1,687.50lbs / 765.44kg shells, 1912 Model
     Breech loading guns in turrets (on barbettes)
     on centreline ends, evenly spread
      16 - 6.00" / 152 mm guns (8x2 guns), 108.00lbs / 48.99kg shells, 1906 Model
     Breech loading guns in deck mounts with hoists
     on side, all amidships
      8 - 3.00" / 76.2 mm guns in single mounts, 13.50lbs / 6.12kg shells, 1915 Model
     Anti-aircraft guns in deck mounts with hoists
     on side, evenly spread
      16 - 1.57" / 40.0 mm guns (8x2 guns), 1.95lbs / 0.88kg shells, 1915 Model
     Anti-aircraft guns in deck mounts 
     on side, evenly spread
      12 - 0.50" / 12.7 mm guns (8 mounts), 0.06lbs / 0.03kg shells, 1919 Model
     Machine guns in deck mounts 
     on side, evenly spread
   Weight of broadside 22,118 lbs / 10,033 kg
   Shells per gun, main battery: 100
   2 - 24.5" / 622.3 mm submerged torpedo tubes

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   13.5" / 343 mm   430.00 ft / 131.06 m   12.00 ft / 3.66 m
   Ends:   5.00" / 127 mm   252.00 ft / 76.81 m   22.00 ft / 6.71 m
   Upper:   8.00" / 203 mm   430.00 ft / 131.06 m   11.00 ft / 3.35 m
     Main Belt covers 97 % of normal length

   - Torpedo Bulkhead:
      2.00" / 51 mm   682.00 ft / 207.87 m   28.00 ft / 8.53 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   15.0" / 381 mm   8.00" / 203 mm      9.00" / 229 mm
   2nd:   5.00" / 127 mm   4.00" / 102 mm      4.00" / 102 mm
   3rd:         -            -         1.00" / 25 mm

   - Armour deck: 4.00" / 102 mm, Conning tower: 11.00" / 279 mm

Machinery:
   Oil fired boilers, steam turbines, 
   Geared drive, 2 shafts, 60,005 shp / 44,764 Kw = 23.73 kts
   Range 7,000nm at 12.00 kts
   Bunker at max displacement = 2,818 tons

Complement:
   1,315 - 1,710

Cost:
   £6.869 million / $27.478 million

Distribution of weights at normal displacement:
   Armament: 2,765 tons, 7.6 %
   Armour: 14,236 tons, 39.2 %
      - Belts: 5,753 tons, 15.8 %
      - Torpedo bulkhead: 1,413 tons, 3.9 %
      - Armament: 2,963 tons, 8.2 %
      - Armour Deck: 3,847 tons, 10.6 %
      - Conning Tower: 260 tons, 0.7 %
   Machinery: 2,200 tons, 6.1 %
   Hull, fittings & equipment: 13,596 tons, 37.4 %
   Fuel, ammunition & stores: 3,540 tons, 9.7 %
   Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     40,650 lbs / 18,439 Kg = 24.1 x 15.0 " / 381 mm shells or 7.0 torpedoes
   Stability (Unstable if below 1.00): 1.10
   Metacentric height 6.4 ft / 2.0 m
   Roll period: 17.4 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.70
   Seaboat quality  (Average = 1.00): 1.24

Hull form characteristics:
   Hull has raised forecastle
   Block coefficient: 0.592
   Length to Beam Ratio: 6.50 : 1
   'Natural speed' for length: 26.12 kts
   Power going to wave formation at top speed: 46 %
   Trim (Max stability = 0, Max steadiness = 100): 56
   Bow angle (Positive = bow angles forward): 20.00 degrees
   Stern overhang: 5.00 ft / 1.52 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      28.04 ft / 8.55 m
      - Forecastle (18 %):   22.00 ft / 6.71 m (20.00 ft / 6.10 m aft of break)
      - Mid (50 %):      17.85 ft / 5.44 m
      - Quarterdeck (18 %):   17.85 ft / 5.44 m
      - Stern:      17.85 ft / 5.44 m
      - Average freeboard:   19.35 ft / 5.90 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 96.3 %
      - Above water (accommodation/working, high = better): 138.5 %
   Waterplane Area: 51,984 Square feet or 4,829 Square metres
   Displacement factor (Displacement / loading): 89 %
   Structure weight / hull surface area: 196 lbs/sq ft or 956 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.93
      - Longitudinal: 1.20
      - Overall: 0.95
   Caution: Hull subject to strain in open-sea
   Hull space for machinery, storage, compartmentation is adequate
   Room for accommodation and workspaces is excellent
   Ship has slow, easy roll, a good, steady gun platform
   Good seaboat, rides out heavy weather easily

Model 1919

Code:

Acre, FSR of Brazil Battleship laid down 1919

Displacement:
   40,237 t light; 42,781 t standard; 46,179 t normal; 48,897 t full load

Dimensions: Length overall / water x beam x draught
   747.21 ft / 732.00 ft x 115.00 ft x 32.00 ft (normal load)
   227.75 m / 223.11 m x 35.05 m  x 9.75 m

Armament:
      12 - 16.50" / 419 mm guns (4x3 guns), 2,246.06lbs / 1,018.80kg shells, 1918 Model
     Breech loading guns in turrets (on barbettes)
     on centreline ends, evenly spread
      16 - 6.00" / 152 mm guns (8x2 guns), 108.00lbs / 48.99kg shells, 1906 Model
     Breech loading guns in deck mounts with hoists
     on side, all amidships
      8 - 3.00" / 76.2 mm guns in single mounts, 13.50lbs / 6.12kg shells, 1919 Model
     Anti-aircraft guns in deck mounts with hoists
     on side, evenly spread
      16 - 1.57" / 40.0 mm guns (8x2 guns), 1.95lbs / 0.88kg shells, 1919 Model
     Anti-aircraft guns in deck mounts 
     on side, evenly spread
      12 - 0.50" / 12.7 mm guns (8 mounts), 0.06lbs / 0.03kg shells, 1919 Model
     Machine guns in deck mounts 
     on side, evenly spread
   Weight of broadside 28,821 lbs / 13,073 kg
   Shells per gun, main battery: 100
   2 - 24.5" / 622.3 mm submerged torpedo tubes

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   13.5" / 343 mm   455.00 ft / 138.68 m   16.00 ft / 4.88 m
   Ends:   1.00" / 25 mm   277.00 ft / 84.43 m   16.00 ft / 4.88 m
     Main Belt covers 96 % of normal length

   - Torpedo Bulkhead:
      3.00" / 76 mm   732.00 ft / 223.11 m   30.00 ft / 9.14 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   14.0" / 356 mm   9.00" / 229 mm      11.0" / 279 mm
   2nd:   1.50" / 38 mm   1.00" / 25 mm      1.00" / 25 mm
   3rd:         -            -         1.00" / 25 mm

   - Armour deck: 5.00" / 127 mm, Conning tower: 11.00" / 279 mm

Machinery:
   Oil fired boilers, steam turbines, 
   Geared drive, 3 shafts, 77,177 shp / 57,574 Kw = 24.48 kts
   Range 9,000nm at 15.00 kts
   Bunker at max displacement = 6,116 tons

Complement:
   1,574 - 2,047

Cost:
   £10.512 million / $42.049 million

Distribution of weights at normal displacement:
   Armament: 3,603 tons, 7.8 %
   Armour: 16,405 tons, 35.5 %
      - Belts: 4,513 tons, 9.8 %
      - Torpedo bulkhead: 2,438 tons, 5.3 %
      - Armament: 3,454 tons, 7.5 %
      - Armour Deck: 5,695 tons, 12.3 %
      - Conning Tower: 305 tons, 0.7 %
   Machinery: 2,741 tons, 5.9 %
   Hull, fittings & equipment: 17,489 tons, 37.9 %
   Fuel, ammunition & stores: 5,942 tons, 12.9 %
   Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     52,591 lbs / 23,855 Kg = 23.4 x 16.5 " / 419 mm shells or 9.4 torpedoes
   Stability (Unstable if below 1.00): 1.16
   Metacentric height 8.2 ft / 2.5 m
   Roll period: 16.9 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.61
   Seaboat quality  (Average = 1.00): 1.23

Hull form characteristics:
   Hull has raised forecastle
   Block coefficient: 0.600
   Length to Beam Ratio: 6.37 : 1
   'Natural speed' for length: 27.06 kts
   Power going to wave formation at top speed: 46 %
   Trim (Max stability = 0, Max steadiness = 100): 57
   Bow angle (Positive = bow angles forward): 20.00 degrees
   Stern overhang: 5.00 ft / 1.52 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      28.04 ft / 8.55 m
      - Forecastle (18 %):   22.00 ft / 6.71 m (20.00 ft / 6.10 m aft of break)
      - Mid (50 %):      17.85 ft / 5.44 m
      - Quarterdeck (18 %):   17.85 ft / 5.44 m
      - Stern:      17.85 ft / 5.44 m
      - Average freeboard:   19.35 ft / 5.90 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 95.4 %
      - Above water (accommodation/working, high = better): 137.0 %
   Waterplane Area: 61,568 Square feet or 5,720 Square metres
   Displacement factor (Displacement / loading): 91 %
   Structure weight / hull surface area: 217 lbs/sq ft or 1,061 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.96
      - Longitudinal: 1.22
      - Overall: 0.98
   Caution: Hull subject to strain in open-sea
   Hull space for machinery, storage, compartmentation is adequate
   Room for accommodation and workspaces is excellent
   Ship has slow, easy roll, a good, steady gun platform
   Good seaboat, rides out heavy weather easily

Model 1921

Code:

Spartacus, FSR of Brazil Battleship laid down 1921

Displacement:
   41,585 t light; 44,162 t standard; 47,841 t normal; 50,784 t full load

Dimensions: Length overall / water x beam x draught
   780.21 ft / 765.00 ft x 114.00 ft x 32.00 ft (normal load)
   237.81 m / 233.17 m x 34.75 m  x 9.75 m

Armament:
      12 - 16.50" / 419 mm guns (4x3 guns), 2,246.06lbs / 1,018.80kg shells, 1918 Model
     Breech loading guns in turrets (on barbettes)
     on centreline ends, evenly spread
      16 - 6.00" / 152 mm guns (8x2 guns), 108.00lbs / 48.99kg shells, 1906 Model
     Breech loading guns in deck mounts with hoists
     on side, all amidships
      8 - 3.00" / 76.2 mm guns in single mounts, 13.50lbs / 6.12kg shells, 1915 Model
     Anti-aircraft guns in deck mounts with hoists
     on side, evenly spread
      16 - 1.57" / 40.0 mm guns (8x2 guns), 1.95lbs / 0.88kg shells, 1915 Model
     Anti-aircraft guns in deck mounts 
     on side, evenly spread
      12 - 0.50" / 12.7 mm guns (8 mounts), 0.06lbs / 0.03kg shells, 1919 Model
     Machine guns in deck mounts 
     on side, evenly spread
   Weight of broadside 28,821 lbs / 13,073 kg
   Shells per gun, main battery: 100
   2 - 24.5" / 622.3 mm submerged torpedo tubes

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   13.5" / 343 mm   455.00 ft / 138.68 m   16.00 ft / 4.88 m
   Ends:   1.00" / 25 mm   310.00 ft / 94.49 m   22.00 ft / 6.71 m
     Main Belt covers 92 % of normal length

   - Torpedo Bulkhead:
      3.00" / 76 mm   765.00 ft / 233.17 m   30.00 ft / 9.14 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   14.0" / 356 mm   9.00" / 229 mm      11.0" / 279 mm
   2nd:   1.50" / 38 mm   1.00" / 25 mm      1.00" / 25 mm
   3rd:         -            -         1.00" / 25 mm

   - Armour deck: 5.25" / 133 mm, Conning tower: 11.00" / 279 mm

Machinery:
   Oil fired boilers, steam turbines, 
   Geared drive, 3 shafts, 74,542 shp / 55,608 Kw = 24.23 kts
   Range 10,000nm at 15.00 kts
   Bunker at max displacement = 6,622 tons

Complement:
   1,616 - 2,102

Cost:
   £12.323 million / $49.290 million

Distribution of weights at normal displacement:
   Armament: 3,603 tons, 7.5 %
   Armour: 17,126 tons, 35.8 %
      - Belts: 4,617 tons, 9.7 %
      - Torpedo bulkhead: 2,547 tons, 5.3 %
      - Armament: 3,454 tons, 7.2 %
      - Armour Deck: 6,195 tons, 12.9 %
      - Conning Tower: 312 tons, 0.7 %
   Machinery: 2,567 tons, 5.4 %
   Hull, fittings & equipment: 18,290 tons, 38.2 %
   Fuel, ammunition & stores: 6,256 tons, 13.1 %
   Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     58,318 lbs / 26,452 Kg = 26.0 x 16.5 " / 419 mm shells or 10.5 torpedoes
   Stability (Unstable if below 1.00): 1.16
   Metacentric height 8.1 ft / 2.5 m
   Roll period: 16.8 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.62
   Seaboat quality  (Average = 1.00): 1.24

Hull form characteristics:
   Hull has raised forecastle
   Block coefficient: 0.600
   Length to Beam Ratio: 6.71 : 1
   'Natural speed' for length: 27.66 kts
   Power going to wave formation at top speed: 43 %
   Trim (Max stability = 0, Max steadiness = 100): 57
   Bow angle (Positive = bow angles forward): 20.00 degrees
   Stern overhang: 5.00 ft / 1.52 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      28.04 ft / 8.55 m
      - Forecastle (18 %):   22.00 ft / 6.71 m (20.00 ft / 6.10 m aft of break)
      - Mid (50 %):      17.85 ft / 5.44 m
      - Quarterdeck (18 %):   17.85 ft / 5.44 m
      - Stern:      17.85 ft / 5.44 m
      - Average freeboard:   19.35 ft / 5.90 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 90.9 %
      - Above water (accommodation/working, high = better): 138.2 %
   Waterplane Area: 63,784 Square feet or 5,926 Square metres
   Displacement factor (Displacement / loading): 94 %
   Structure weight / hull surface area: 219 lbs/sq ft or 1,068 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.98
      - Longitudinal: 1.14
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is adequate
   Room for accommodation and workspaces is excellent
   Ship has slow, easy roll, a good, steady gun platform
   Good seaboat, rides out heavy weather easily

Model 1923

Code:

Class Struggle, FSR of Brazil Battleship laid down 1923

Displacement:
   42,928 t light; 45,533 t standard; 49,207 t normal; 52,146 t full load

Dimensions: Length overall / water x beam x draught
   795.21 ft / 780.00 ft x 115.00 ft x 32.00 ft (normal load)
   242.38 m / 237.74 m x 35.05 m  x 9.75 m

Armament:
      12 - 16.50" / 419 mm guns (4x3 guns), 2,246.06lbs / 1,018.80kg shells, 1918 Model
     Breech loading guns in turrets (on barbettes)
     on centreline ends, evenly spread
      16 - 6.00" / 152 mm guns (8x2 guns), 108.00lbs / 48.99kg shells, 1906 Model
     Breech loading guns in deck mounts with hoists
     on side, all amidships
      8 - 3.00" / 76.2 mm guns in single mounts, 13.50lbs / 6.12kg shells, 1915 Model
     Anti-aircraft guns in deck mounts with hoists
     on side, evenly spread
      16 - 1.57" / 40.0 mm guns (8x2 guns), 1.95lbs / 0.88kg shells, 1915 Model
     Anti-aircraft guns in deck mounts 
     on side, evenly spread
      12 - 0.50" / 12.7 mm guns (8 mounts), 0.06lbs / 0.03kg shells, 1919 Model
     Machine guns in deck mounts 
     on side, evenly spread
   Weight of broadside 28,821 lbs / 13,073 kg
   Shells per gun, main battery: 100
   2 - 24.5" / 622.3 mm submerged torpedo tubes

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   13.5" / 343 mm   446.00 ft / 135.94 m   16.00 ft / 4.88 m
   Ends:   0.50" / 13 mm   334.00 ft / 101.80 m   22.00 ft / 6.71 m
     Main Belt covers 88 % of normal length

   - Torpedo Bulkhead:
      3.00" / 76 mm   780.00 ft / 237.74 m   30.00 ft / 9.14 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   14.0" / 356 mm   9.00" / 229 mm      11.0" / 279 mm
   2nd:   1.50" / 38 mm   1.00" / 25 mm      1.00" / 25 mm
   3rd:         -            -         1.00" / 25 mm

   - Armour deck: 6.00" / 152 mm, Conning tower: 11.00" / 279 mm

Machinery:
   Oil fired boilers, steam turbines, 
   Geared drive, 3 shafts, 75,444 shp / 56,281 Kw = 24.23 kts
   Range 10,000nm at 15.00 kts
   Bunker at max displacement = 6,613 tons

Complement:
   1,651 - 2,147

Cost:
   £14.201 million / $56.805 million

Distribution of weights at normal displacement:
   Armament: 3,603 tons, 7.3 %
   Armour: 18,098 tons, 36.8 %
      - Belts: 4,447 tons, 9.0 %
      - Torpedo bulkhead: 2,597 tons, 5.3 %
      - Armament: 3,454 tons, 7.0 %
      - Armour Deck: 7,282 tons, 14.8 %
      - Conning Tower: 318 tons, 0.6 %
   Machinery: 2,522 tons, 5.1 %
   Hull, fittings & equipment: 18,706 tons, 38.0 %
   Fuel, ammunition & stores: 6,278 tons, 12.8 %
   Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     62,046 lbs / 28,144 Kg = 27.6 x 16.5 " / 419 mm shells or 11.3 torpedoes
   Stability (Unstable if below 1.00): 1.16
   Metacentric height 8.2 ft / 2.5 m
   Roll period: 16.9 seconds
   Steadiness   - As gun platform (Average = 50 %): 71 %
         - Recoil effect (Restricted arc if above 1.00): 0.60
   Seaboat quality  (Average = 1.00): 1.23

Hull form characteristics:
   Hull has raised forecastle
   Block coefficient: 0.600
   Length to Beam Ratio: 6.78 : 1
   'Natural speed' for length: 27.93 kts
   Power going to wave formation at top speed: 43 %
   Trim (Max stability = 0, Max steadiness = 100): 58
   Bow angle (Positive = bow angles forward): 20.00 degrees
   Stern overhang: 5.00 ft / 1.52 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      28.04 ft / 8.55 m
      - Forecastle (18 %):   22.00 ft / 6.71 m (20.00 ft / 6.10 m aft of break)
      - Mid (50 %):      17.85 ft / 5.44 m
      - Quarterdeck (18 %):   17.85 ft / 5.44 m
      - Stern:      17.85 ft / 5.44 m
      - Average freeboard:   19.35 ft / 5.90 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 87.9 %
      - Above water (accommodation/working, high = better): 139.2 %
   Waterplane Area: 65,605 Square feet or 6,095 Square metres
   Displacement factor (Displacement / loading): 95 %
   Structure weight / hull surface area: 218 lbs/sq ft or 1,065 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.99
      - Longitudinal: 1.11
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is adequate
   Room for accommodation and workspaces is excellent
   Ship has slow, easy roll, a good, steady gun platform
   Good seaboat, rides out heavy weather easily

Model 1925

Code:

Maximillian Barreira, FSR of Brazil Battleship laid down 1925

Displacement:
   47,210 t light; 50,235 t standard; 54,076 t normal; 57,148 t full load

Dimensions: Length overall / water x beam x draught
   824.38 ft / 808.00 ft x 122.00 ft x 32.00 ft (normal load)
   251.27 m / 246.28 m x 37.19 m  x 9.75 m

Armament:
      12 - 16.50" / 419 mm guns (4x3 guns), 2,246.06lbs / 1,018.80kg shells, 1918 Model
     Breech loading guns in turrets (on barbettes)
     on centreline ends, evenly spread
      16 - 6.00" / 152 mm guns (8x2 guns), 108.00lbs / 48.99kg shells, 1906 Model
     Breech loading guns in deck mounts with hoists
     on side, all amidships
      8 - 3.00" / 76.2 mm guns in single mounts, 13.50lbs / 6.12kg shells, 1915 Model
     Anti-aircraft guns in deck mounts with hoists
     on side, evenly spread
      16 - 1.57" / 40.0 mm guns (8x2 guns), 1.95lbs / 0.88kg shells, 1915 Model
     Anti-aircraft guns in deck mounts 
     on side, evenly spread
      12 - 0.50" / 12.7 mm guns (8 mounts), 0.06lbs / 0.03kg shells, 1919 Model
     Machine guns in deck mounts 
     on side, evenly spread
   Weight of broadside 28,821 lbs / 13,073 kg
   Shells per gun, main battery: 120
   2 - 24.5" / 622.3 mm submerged torpedo tubes

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   13.5" / 343 mm   450.00 ft / 137.16 m   18.00 ft / 5.49 m
   Ends:   1.00" / 25 mm   358.00 ft / 109.12 m   18.00 ft / 5.49 m
     Main Belt covers 86 % of normal length

   - Torpedo Bulkhead:
      3.00" / 76 mm   808.00 ft / 246.28 m   30.00 ft / 9.14 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   14.0" / 356 mm   9.00" / 229 mm      14.0" / 356 mm
   2nd:   1.50" / 38 mm   1.00" / 25 mm      1.00" / 25 mm
   3rd:         -            -         1.00" / 25 mm

   - Armour deck: 6.00" / 152 mm, Conning tower: 11.00" / 279 mm

Machinery:
   Oil fired boilers, steam turbines, 
   Geared drive, 3 shafts, 100,003 shp / 74,602 Kw = 25.73 kts
   Range 10,000nm at 15.00 kts
   Bunker at max displacement = 6,913 tons

Complement:
   1,772 - 2,304

Cost:
   £16.799 million / $67.197 million

Distribution of weights at normal displacement:
   Armament: 3,603 tons, 6.7 %
   Armour: 20,328 tons, 37.6 %
      - Belts: 5,178 tons, 9.6 %
      - Torpedo bulkhead: 2,691 tons, 5.0 %
      - Armament: 4,117 tons, 7.6 %
      - Armour Deck: 8,003 tons, 14.8 %
      - Conning Tower: 339 tons, 0.6 %
   Machinery: 3,247 tons, 6.0 %
   Hull, fittings & equipment: 20,032 tons, 37.0 %
   Fuel, ammunition & stores: 6,866 tons, 12.7 %
   Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     71,029 lbs / 32,218 Kg = 31.6 x 16.5 " / 419 mm shells or 13.4 torpedoes
   Stability (Unstable if below 1.00): 1.21
   Metacentric height 9.5 ft / 2.9 m
   Roll period: 16.6 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.50
   Seaboat quality  (Average = 1.00): 1.25

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.600
   Length to Beam Ratio: 6.62 : 1
   'Natural speed' for length: 28.43 kts
   Power going to wave formation at top speed: 45 %
   Trim (Max stability = 0, Max steadiness = 100): 56
   Bow angle (Positive = bow angles forward): 20.00 degrees
   Stern overhang: 5.00 ft / 1.52 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      31.27 ft / 9.53 m
      - Forecastle (18 %):   19.90 ft / 6.07 m
      - Mid (50 %):      19.90 ft / 6.07 m
      - Quarterdeck (18 %):   19.90 ft / 6.07 m
      - Stern:      19.90 ft / 6.07 m
      - Average freeboard:   20.70 ft / 6.31 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 85.1 %
      - Above water (accommodation/working, high = better): 154.2 %
   Waterplane Area: 72,097 Square feet or 6,698 Square metres
   Displacement factor (Displacement / loading): 97 %
   Structure weight / hull surface area: 215 lbs/sq ft or 1,050 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.96
      - Longitudinal: 1.07
      - Overall: 0.97
   Caution: Hull subject to strain in open-sea
   Hull space for machinery, storage, compartmentation is adequate
   Room for accommodation and workspaces is excellent
   Ship has slow, easy roll, a good, steady gun platform
   Good seaboat, rides out heavy weather easily

Zor

Even though it is a tad older than 1925, would the Fubuki-class destroyer be acceptable?

Zor

Steve

No, you may not have it in service. You may begin preparations to lay them however.

Thanas · **Joined:** 2004-06-26 07:49pm **Posts:** 5660

Well, my battleship design heritage is pretty much straightforward.

up to 1917: as in OTL
After Battles of Lissa and Genua (details being worked out with Raesene), new design priorities.

1918:
1 L20alpha class battleship. 41500 tons standard.
Due to the cost of the war in Austria, Germany then scales back battleship construction.
1917-1921: rebuilding of old ships with oil firing boilers and some other changes (to be revealed when SDNWiki page goes online).

1922:
Bayern class rebuilt complete, Germany produces updated Bayern class [url=http://bbs.stardestroyer.net/viewtopic.php?p=3189815#p3189815]. Class has 8x16inch, a step back from the previous L20alpha design.
2x 30kt Ersatz Yorck cruising version, 2x30kt Ersatz Yorck high speed version (all posted previous in this thread)

1923:
Germany adds another 8000tons to the L20alpha design, builts following ship:

Quote:

Einheit Klasse, Germany Schlachtschiff laid down 1923

Displacement:
47.400 t light; 49.932 t standard; 51.668 t normal; 53.056 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(763,49 ft / 721,78 ft) x 131,23 ft x (36,09 / 36,84 ft)
(232,71 m / 220,00 m) x 40,00 m x (11,00 / 11,23 m)

Armament:
12 - 16,50" / 419 mm 45,0 cal guns - 2.265,21lbs / 1.027,48kg shells, 90 per gun
Breech loading guns in turret on barbette mounts, 1923 Model
3 x Quad mounts on centreline ends, majority forward
1 raised mount - superfiring
12 - 6,00" / 152 mm 45,0 cal guns - 108,92lbs / 49,41kg shells, 150 per gun
Quick firing guns in turret on barbette mounts, 1923 Model
6 x Twin mounts on sides, evenly spread
8 - 3,94" / 100,0 mm 45,0 cal guns - 30,77lbs / 13,96kg shells, 150 per gun
Dual purpose guns in deck and hoist mounts, 1923 Model
8 x Single mounts on sides, evenly spread
24 - 1,57" / 40,0 mm 45,0 cal guns - 1,97lbs / 0,89kg shells, 300 per gun
Anti-air guns in deck mounts, 1923 Model
12 x Twin mounts on sides, evenly spread
24 - 0,79" / 20,0 mm 45,0 cal guns - 0,25lbs / 0,11kg shells, 500 per gun
Breech loading guns in deck mounts, 1923 Model
6 x Quad mounts on sides, evenly spread
Weight of broadside 28.789 lbs / 13.058 kg

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 16,0" / 406 mm 400,00 ft / 121,92 m 20,00 ft / 6,10 m
Ends: Unarmoured
Main Belt covers 85% of normal length

- Torpedo Bulkhead:
3,00" / 76 mm 400,00 ft / 121,92 m 30,00 ft / 9,14 m

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 16,0" / 406 mm 14,0" / 356 mm 15,0" / 381 mm
2nd: 2,00" / 51 mm 1,00" / 25 mm 1,00" / 25 mm
3rd: 1,00" / 25 mm - -
4th: 1,00" / 25 mm - -
5th: 1,00" / 25 mm - -

- Armoured deck - single deck: 7,50" / 191 mm For and Aft decks
Forecastle: 2,50" / 64 mm Quarter deck: 2,50" / 64 mm

- Conning towers: Forward 8,00" / 203 mm, Aft 0,00" / 0 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 54.605 shp / 40.735 Kw = 22,00 kts
Range 5.000nm at 14,00 kts
Bunker at max displacement = 3.124 tons

Complement:
1.713 - 2.227

Cost:
£13,378 million / $53,514 million

Distribution of weights at normal displacement:
Armament: 4.738 tons, 9,2%
Armour: 20.493 tons, 39,7%
- Belts: 5.940 tons, 11,5%
- Torpedo bulkhead: 1.332 tons, 2,6%
- Armament: 4.779 tons, 9,2%
- Armour Deck: 8.203 tons, 15,9%
- Conning Tower: 239 tons, 0,5%
Machinery: 1.825 tons, 3,5%
Hull, fittings & equipment: 20.269 tons, 39,2%
Fuel, ammunition & stores: 4.267 tons, 8,3%
Miscellaneous weights: 75 tons, 0,1%
- Above deck: 75 tons

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
88.561 lbs / 40.170 Kg = 39,4 x 16,5 " / 419 mm shells or 17,2 torpedoes
Stability (Unstable if below 1.00): 1,26
Metacentric height 11,4 ft / 3,5 m
Roll period: 16,3 seconds
Steadiness - As gun platform (Average = 50 %): 71 %
- Recoil effect (Restricted arc if above 1.00): 0,50
Seaboat quality (Average = 1.00): 1,51

Hull form characteristics:
Hull has rise forward of midbreak,
a normal bow and a round stern
Block coefficient (normal/deep): 0,529 / 0,532
Length to Beam Ratio: 5,50 : 1
'Natural speed' for length: 26,87 kts
Power going to wave formation at top speed: 41 %
Trim (Max stability = 0, Max steadiness = 100): 47
Bow angle (Positive = bow angles forward): 40,00 degrees
Stern overhang: 19,69 ft / 6,00 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 16,00%, 26,25 ft / 8,00 m, 22,31 ft / 6,80 m
- Forward deck: 34,00%, 22,31 ft / 6,80 m, 22,31 ft / 6,80 m
- Aft deck: 37,00%, 21,98 ft / 6,70 m, 21,98 ft / 6,70 m
- Quarter deck: 13,00%, 21,98 ft / 6,70 m, 21,33 ft / 6,50 m
- Average freeboard: 22,35 ft / 6,81 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 69,1%
- Above water (accommodation/working, high = better): 159,6%
Waterplane Area: 64.821 Square feet or 6.022 Square metres
Displacement factor (Displacement / loading): 104%
Structure weight / hull surface area: 255 lbs/sq ft or 1.246 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0,93
- Longitudinal: 1,85
- Overall: 1,00
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform
Excellent seaboat, comfortable, can fire her guns in the heaviest weather

Uses the 16.5 gun of the L20alpha.

1924:
Battlecruiser version of the above ship.

Quote:

Ziethen Klasse, Germany Schlachtkreuzer laid down 1924

Displacement:
47.895 t light; 49.998 t standard; 52.910 t normal; 55.239 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(901,61 ft / 853,02 ft) x 124,67 ft x (36,09 / 37,26 ft)
(274,81 m / 260,00 m) x 38,00 m x (11,00 / 11,36 m)

Armament:
8 - 16,50" / 419 mm 45,0 cal guns - 2.265,21lbs / 1.027,48kg shells, 90 per gun
Breech loading guns in turret on barbette mounts, 1924 Model
1 x Quad mount on centreline, forward deck centre
2 x Twin mounts on centreline ends, evenly spread
1 raised mount - superfiring
12 - 6,00" / 152 mm 45,0 cal guns - 108,92lbs / 49,41kg shells, 150 per gun
Quick firing guns in turret on barbette mounts, 1924 Model
6 x Twin mounts on sides, evenly spread
8 - 3,94" / 100,0 mm 45,0 cal guns - 30,77lbs / 13,96kg shells, 150 per gun
Dual purpose guns in deck and hoist mounts, 1924 Model
8 x Single mounts on sides, evenly spread
24 - 1,57" / 40,0 mm 45,0 cal guns - 1,97lbs / 0,89kg shells, 300 per gun
Anti-air guns in deck mounts, 1924 Model
12 x Twin mounts on sides, evenly spread
24 - 0,79" / 20,0 mm 45,0 cal guns - 0,25lbs / 0,11kg shells, 500 per gun
Breech loading guns in deck mounts, 1924 Model
6 x Quad mounts on sides, evenly spread
Weight of broadside 19.728 lbs / 8.949 kg

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 15,0" / 381 mm 420,00 ft / 128,02 m 20,00 ft / 6,10 m
Ends: Unarmoured
Main Belt covers 76% of normal length

- Torpedo Bulkhead:
3,00" / 76 mm 420,00 ft / 128,02 m 30,00 ft / 9,14 m

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 15,0" / 381 mm 13,0" / 330 mm 15,0" / 381 mm
2nd: 2,00" / 51 mm 1,00" / 25 mm 1,00" / 25 mm
3rd: 1,00" / 25 mm - -
4th: 1,00" / 25 mm - -
5th: 1,00" / 25 mm - -

- Armoured deck - single deck: 7,00" / 178 mm For and Aft decks
Forecastle: 2,00" / 51 mm Quarter deck: 2,00" / 51 mm

- Conning towers: Forward 8,00" / 203 mm, Aft 0,00" / 0 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 145.298 shp / 108.392 Kw = 29,00 kts
Range 5.000nm at 18,00 kts
Bunker at max displacement = 5.240 tons

Complement:
1.743 - 2.267

Cost:
£12,939 million / $51,757 million

Distribution of weights at normal displacement:
Armament: 3.286 tons, 6,2%
Armour: 19.623 tons, 37,1%
- Belts: 5.758 tons, 10,9%
- Torpedo bulkhead: 1.399 tons, 2,6%
- Armament: 4.043 tons, 7,6%
- Armour Deck: 8.181 tons, 15,5%
- Conning Tower: 243 tons, 0,5%
Machinery: 4.786 tons, 9,0%
Hull, fittings & equipment: 20.125 tons, 38,0%
Fuel, ammunition & stores: 5.014 tons, 9,5%
Miscellaneous weights: 75 tons, 0,1%
- Above deck: 75 tons

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
92.499 lbs / 41.957 Kg = 41,2 x 16,5 " / 419 mm shells or 16,1 torpedoes
Stability (Unstable if below 1.00): 1,26
Metacentric height 10,5 ft / 3,2 m
Roll period: 16,1 seconds
Steadiness - As gun platform (Average = 50 %): 71 %
- Recoil effect (Restricted arc if above 1.00): 0,42
Seaboat quality (Average = 1.00): 1,51

Hull form characteristics:
Hull has a flush deck,
a normal bow and a round stern
Block coefficient (normal/deep): 0,483 / 0,488
Length to Beam Ratio: 6,84 : 1
'Natural speed' for length: 29,21 kts
Power going to wave formation at top speed: 47 %
Trim (Max stability = 0, Max steadiness = 100): 47
Bow angle (Positive = bow angles forward): 40,00 degrees
Stern overhang: 19,69 ft / 6,00 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 16,00%, 34,45 ft / 10,50 m, 24,44 ft / 7,45 m
- Forward deck: 34,00%, 24,44 ft / 7,45 m, 24,44 ft / 7,45 m
- Aft deck: 37,00%, 24,44 ft / 7,45 m, 24,44 ft / 7,45 m
- Quarter deck: 13,00%, 24,44 ft / 7,45 m, 24,44 ft / 7,45 m
- Average freeboard: 25,08 ft / 7,65 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 73,0%
- Above water (accommodation/working, high = better): 186,3%
Waterplane Area: 69.750 Square feet or 6.480 Square metres
Displacement factor (Displacement / loading): 113%
Structure weight / hull surface area: 220 lbs/sq ft or 1.074 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0,95
- Longitudinal: 1,52
- Overall: 1,00
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform
Excellent seaboat, comfortable, can fire her guns in the heaviest weather

Meanwhile, at the same time, Germany made the jump to 18" in their ship design:

Quote:

Bismarck Klasse, Germany Battleship laid down 1924

Displacement:
47.452 t light; 49.948 t standard; 51.668 t normal; 53.044 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(763,49 ft / 721,78 ft) x 131,23 ft x (36,09 / 36,83 ft)
(232,71 m / 220,00 m) x 40,00 m x (11,00 / 11,23 m)

Armament:
9 - 18,00" / 457 mm 45,0 cal guns - 2.940,86lbs / 1.333,95kg shells, 90 per gun
Breech loading guns in turret on barbette mounts, 1924 Model
3 x Triple mounts on centreline ends, majority forward
1 raised mount - superfiring
12 - 6,00" / 152 mm 45,0 cal guns - 108,92lbs / 49,41kg shells, 150 per gun
Quick firing guns in turret on barbette mounts, 1924 Model
6 x Twin mounts on sides, evenly spread
8 - 3,94" / 100,0 mm 45,0 cal guns - 30,77lbs / 13,96kg shells, 150 per gun
Dual purpose guns in deck and hoist mounts, 1924 Model
8 x Single mounts on sides amidships
24 - 1,57" / 40,0 mm 45,0 cal guns - 1,97lbs / 0,89kg shells, 300 per gun
Anti-air guns in deck mounts, 1924 Model
12 x Twin mounts on sides, evenly spread
24 - 0,79" / 20,0 mm 45,0 cal guns - 0,25lbs / 0,11kg shells, 500 per gun
Breech loading guns in deck mounts, 1924 Model
6 x Quad mounts on sides, evenly spread
Weight of broadside 28.074 lbs / 12.734 kg

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 16,0" / 406 mm 400,00 ft / 121,92 m 20,00 ft / 6,10 m
Ends: Unarmoured
Main Belt covers 85% of normal length

- Torpedo Bulkhead:
3,00" / 76 mm 400,00 ft / 121,92 m 30,00 ft / 9,14 m

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 16,0" / 406 mm 14,0" / 356 mm 15,0" / 381 mm
2nd: 2,00" / 51 mm 1,00" / 25 mm 1,00" / 25 mm
3rd: 1,00" / 25 mm - -
4th: 1,00" / 25 mm - -
5th: 1,00" / 25 mm - -

- Armoured deck - single deck: 7,70" / 196 mm For and Aft decks
Forecastle: 2,50" / 64 mm Quarter deck: 2,50" / 64 mm

- Conning towers: Forward 8,00" / 203 mm, Aft 0,00" / 0 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 54.605 shp / 40.735 Kw = 22,00 kts
Range 5.000nm at 14,00 kts
Bunker at max displacement = 3.096 tons

Complement:
1.713 - 2.227

Cost:
£14,001 million / $56,003 million

Distribution of weights at normal displacement:
Armament: 4.475 tons, 8,7%
Armour: 20.704 tons, 40,1%
- Belts: 5.940 tons, 11,5%
- Torpedo bulkhead: 1.332 tons, 2,6%
- Armament: 4.783 tons, 9,3%
- Armour Deck: 8.410 tons, 16,3%
- Conning Tower: 239 tons, 0,5%
Machinery: 1.799 tons, 3,5%
Hull, fittings & equipment: 20.399 tons, 39,5%
Fuel, ammunition & stores: 4.216 tons, 8,2%
Miscellaneous weights: 75 tons, 0,1%
- Above deck: 75 tons

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
91.110 lbs / 41.327 Kg = 31,2 x 18,0 " / 457 mm shells or 17,9 torpedoes
Stability (Unstable if below 1.00): 1,26
Metacentric height 11,5 ft / 3,5 m
Roll period: 16,3 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0,49
Seaboat quality (Average = 1.00): 1,52

Hull form characteristics:
Hull has a flush deck,
a normal bow and a round stern
Block coefficient (normal/deep): 0,529 / 0,532
Length to Beam Ratio: 5,50 : 1
'Natural speed' for length: 26,87 kts
Power going to wave formation at top speed: 41 %
Trim (Max stability = 0, Max steadiness = 100): 46
Bow angle (Positive = bow angles forward): 40,00 degrees
Stern overhang: 19,69 ft / 6,00 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 16,00%, 26,25 ft / 8,00 m, 22,31 ft / 6,80 m
- Forward deck: 34,00%, 22,31 ft / 6,80 m, 22,31 ft / 6,80 m
- Aft deck: 37,00%, 22,31 ft / 6,80 m, 22,31 ft / 6,80 m
- Quarter deck: 13,00%, 22,31 ft / 6,80 m, 21,33 ft / 6,50 m
- Average freeboard: 22,50 ft / 6,86 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 67,6%
- Above water (accommodation/working, high = better): 160,8%
Waterplane Area: 64.821 Square feet or 6.022 Square metres
Displacement factor (Displacement / loading): 105%
Structure weight / hull surface area: 254 lbs/sq ft or 1.241 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0,93
- Longitudinal: 1,86
- Overall: 1,00
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform
Excellent seaboat, comfortable, can fire her guns in the heaviest weather

Ma Deuce

Thanas wrote:

And a 1.6kt German Destroyer.

You can built viable destroyer designs in Springsharp.

27 knots is a little slow for a DD of this era, and 1922 is too early for enclosed, powered mountings on DDs; to my knowledge, every destroyer in service in 1925 would use open deck mountings (that may or may not have shields) without hoists. Even when we start using them, the type used on DDs would be "deck and hoist" rather than "turret on barbette". Also, I'm not sure what you did wrong with the depth charges, but I got them to appear on my design. An important note however is that Springsharp 3b3 does not actually add the weight of torpedoes and DCs to the ship even though the weights are listed in the "weapons" page and the report, so you'll have to add them in the misc weights to maintain realism. Also note that for destroyers you can bring the composite strength well below 1.0, all the way to 0.5 in fact, provided your displacement is low enough. Note how my composite strength is at 0.54 yet there is no stress warning. I suggest however than we not allow SS designs that have cross-sectional strength ratings of less than 0.5.

The revised version of my earlier design: Note the depth charges.

Code:

HMMS Trandraka, Madagascar Destroyer laid down 1921

Displacement:
   1,499 t light; 1,571 t standard; 1,804 t normal; 1,991 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (351.05 ft / 342.85 ft) x 31.17 ft x (13.19 / 14.11 ft)
   (107.00 m / 104.50 m) x 9.50 m  x (4.02 / 4.30 m)

Armament:
      3 - 4.53" / 115 mm 50.0 cal guns - 46.30lbs / 21.00kg shells, 360 per gun
     Dual purpose guns in deck mounts, 1921 Model
     3 x Single mounts on centreline ends, majority aft
      1 raised mount aft - superfiring
      1 - 7.87" / 200 mm 10.0 cal gun - 176.37lbs / 80.00kg shells, 75 per gun
     Breech loading gun in deck mount, 1921 Model
     1 x Single mount on centreline, forward deck centre
      1 raised mount
      4 - 0.59" / 15.0 mm 80.0 cal guns - 0.11lbs / 0.05kg shells, 3,000 per gun
     Machine guns in deck mounts, 1921 Model
     2 x Twin mounts on centreline, evenly spread
      2 raised mounts
      Weight of broadside 316 lbs / 143 kg
      Main Torpedoes
      8 - 21.7" / 550 mm, 24.61 ft / 7.50 m torpedoes - 1.671 t each, 13.370 t total
   In 2 sets of deck mounted centre rotating tubes
      Main DC/AS Mortars
      4 - 440.92 lbs / 200.00 kg Depth Charges + 12 reloads - 3.149 t total
   in Depth charge throwers
      2nd DC/AS Mortars
      2 - 727.53 lbs / 330.00 kg Depth Charges + 6 reloads - 2.598 t total
   in Stern depth charge racks

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0.51" / 13 mm         -               -
   2nd:   0.51" / 13 mm         -               -

Machinery:
   Oil fired boilers, steam turbines, 
   Geared drive, 2 shafts, 40,000 shp / 29,840 Kw = 34.10 kts
   Range 4,065nm at 15.00 kts
   Bunker at max displacement = 420 tons

Complement:
   137 - 179

Cost:
   £0.524 million / $2.095 million

Distribution of weights at normal displacement:
   Armament: 73 tons, 4.0 %
      - Guns: 38 tons, 2.1 %
      - Weapons: 35 tons, 1.9 %
   Armour: 5 tons, 0.3 %
      - Armament: 5 tons, 0.3 %
   Machinery: 1,022 tons, 56.7 %
   Hull, fittings & equipment: 379 tons, 21.0 %
   Fuel, ammunition & stores: 305 tons, 16.9 %
   Miscellaneous weights: 19 tons, 1.1 %
      - Hull above water: 6 tons
      - On freeboard deck: 13 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     386 lbs / 175 Kg = 8.3 x 4.5 " / 115 mm shells or 0.2 torpedoes
   Stability (Unstable if below 1.00): 1.45
   Metacentric height 1.7 ft / 0.5 m
   Roll period: 10.2 seconds
   Steadiness   - As gun platform (Average = 50 %): 50 %
         - Recoil effect (Restricted arc if above 1.00): 0.29
   Seaboat quality  (Average = 1.00): 0.71

Hull form characteristics:
   Hull has rise forward of midbreak,
     a normal bow and large transom stern
   Block coefficient (normal/deep): 0.448 / 0.462
   Length to Beam Ratio: 11.00 : 1
   'Natural speed' for length: 21.11 kts
   Power going to wave formation at top speed: 69 %
   Trim (Max stability = 0, Max steadiness = 100): 70
   Bow angle (Positive = bow angles forward): 21.80 degrees
   Stern overhang: 0.98 ft / 0.30 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   15.00 %,  18.04 ft / 5.50 m,  17.06 ft / 5.20 m
      - Forward deck:   35.00 %,  17.06 ft / 5.20 m,  17.06 ft / 5.20 m
      - Aft deck:   35.00 %,  7.22 ft / 2.20 m,  7.22 ft / 2.20 m
      - Quarter deck:   15.00 %,  7.22 ft / 2.20 m,  7.22 ft / 2.20 m
      - Average freeboard:      12.20 ft / 3.72 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 190.0 %
      - Above water (accommodation/working, high = better): 91.8 %
   Waterplane Area: 7,069 Square feet or 657 Square metres
   Displacement factor (Displacement / loading): 63 %
   Structure weight / hull surface area: 31 lbs/sq ft or 151 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.50
      - Longitudinal: 1.22
      - Overall: 0.54
   Cramped machinery, storage, compartmentation space
   Adequate accommodation and workspace room
   Poor seaboat, wet and uncomfortable, reduced performance in heavy weather

Steve

Oh. Damn. I just thought the destroyer tonnages were so light it didn't effect anything. My bad. :mrgreen:

Fingolfin_Noldor · Last edited by Fingolfin_Noldor on 2009-11-07 11:36am, edited 2 times in total.

I worked up my first cruiser... hope it works well. Comments?

Sparta, Byzantium Cruiser laid down 1925

Displacement:
12,592 t light; 13,182 t standard; 16,758 t normal; 19,618 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(605.70 ft / 590.55 ft) x 72.18 ft x (29.53 / 33.02 ft)
(184.62 m / 180.00 m) x 22.00 m x (9.00 / 10.07 m)

Armament:
9 - 8.00" / 203 mm 55.0 cal guns - 276.33lbs / 125.34kg shells, 150 per gun
Breech loading guns in turret on barbette mounts, 1925 Model
3 x 3-gun mounts on centreline ends, evenly spread
4 - 5.00" / 127 mm 25.0 cal guns - 56.77lbs / 25.75kg shells, 150 per gun
Breech loading guns in casemate mounts, 1925 Model
4 x Single mounts on sides, evenly spread
24 - 1.57" / 40.0 mm 60.0 cal guns - 2.14lbs / 0.97kg shells, 600 per gun
Anti-air guns in deck mounts, 1925 Model
6 x 4-gun mounts on sides, evenly spread
32 - 0.79" / 20.0 mm 70.0 cal guns - 0.27lbs / 0.12kg shells, 600 per gun
Breech loading guns in deck mounts, 1925 Model
8 x 4-gun mounts on sides, evenly spread
Weight of broadside 2,774 lbs / 1,258 kg
6 - 21.0" / 533 mm, 24.00 ft / 7.32 m torpedoes - 1.559 t each, 9.357 t total
In 6 sets of deck mounted carriage/fixed tubes

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 8.00" / 203 mm 400.00 ft / 121.92 m 18.00 ft / 5.49 m
Ends: Unarmoured
Main Belt covers 104 % of normal length

- Torpedo Bulkhead:
4.00" / 102 mm 120.00 ft / 36.58 m 10.00 ft / 3.05 m

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 8.00" / 203 mm 8.00" / 203 mm 8.00" / 203 mm

- Armoured deck - multiple decks: 2.00" / 51 mm For and Aft decks
Forecastle: 2.00" / 51 mm Quarter deck: 2.00" / 51 mm

- Conning towers: Forward 3.00" / 76 mm, Aft 0.00" / 0 mm

Machinery:
Oil fired boilers, steam turbines,
Electric motors, 4 shafts, 77,503 shp / 57,817 Kw = 30.00 kts
Range 10,000nm at 20.00 kts
Bunker at max displacement = 6,435 tons

Complement:
736 - 957

Cost:
£3.568 million / $14.271 million

Distribution of weights at normal displacement:
Armament: 902 tons, 5.4 %
- Guns: 893 tons, 5.3 %
- Torpedoes: 9 tons, 0.1 %
Armour: 4,398 tons, 26.2 %
- Belts: 2,396 tons, 14.3 %
- Torpedo bulkhead: 178 tons, 1.1 %
- Armament: 715 tons, 4.3 %
- Armour Deck: 1,067 tons, 6.4 %
- Conning Tower: 42 tons, 0.3 %
Machinery: 2,516 tons, 15.0 %
Hull, fittings & equipment: 4,739 tons, 28.3 %
Fuel, ammunition & stores: 4,166 tons, 24.9 %
Miscellaneous weights: 36 tons, 0.2 %
- On freeboard deck: 36 tons

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
22,725 lbs / 10,308 Kg = 88.8 x 8.0 " / 203 mm shells or 3.8 torpedoes
Stability (Unstable if below 1.00): 1.00
Metacentric height 3.1 ft / 0.9 m
Roll period: 17.3 seconds
Steadiness - As gun platform (Average = 50 %): 91 %
- Recoil effect (Restricted arc if above 1.00): 0.40
Seaboat quality (Average = 1.00): 1.13

Hull form characteristics:
Hull has raised forecastle,
an extended bulbous bow and large transom stern
Block coefficient (normal/deep): 0.466 / 0.488
Length to Beam Ratio: 8.18 : 1
'Natural speed' for length: 28.32 kts
Power going to wave formation at top speed: 55 %
Trim (Max stability = 0, Max steadiness = 100): 80
Bow angle (Positive = bow angles forward): 30.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 35.00 %, 26.25 ft / 8.00 m, 22.97 ft / 7.00 m
- Forward deck: 35.00 %, 16.40 ft / 5.00 m, 16.40 ft / 5.00 m
- Aft deck: 15.00 %, 16.40 ft / 5.00 m, 16.40 ft / 5.00 m
- Quarter deck: 15.00 %, 16.40 ft / 5.00 m, 16.40 ft / 5.00 m
- Average freeboard: 19.16 ft / 5.84 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 91.3 %
- Above water (accommodation/working, high = better): 120.5 %
Waterplane Area: 28,635 Square feet or 2,660 Square metres
Displacement factor (Displacement / loading): 136 %
Structure weight / hull surface area: 117 lbs/sq ft or 573 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.95
- Longitudinal: 1.63
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform

Zor

I would sugjest looking for a more fitting name like Prometheus or something, given that it is Byzantine and Excaliber is a non roman legend.

Zor

Fingolfin_Noldor

Zor wrote:

I would sugjest looking for a more fitting name like Prometheus or something, given that it is Byzantine and Excaliber is a non roman legend.

Zor

Renamed as Sparta.

Thanas · **Joined:** 2004-06-26 07:49pm **Posts:** 5660

Fingolfin_Noldor wrote:

I worked up my first cruiser... hope it works well. Comments?

Transom sterns and bulbous bows...not sure if they were invented yet. Your deck armor is also seriously weak. Other than that, the ship is about on par with my own cruiser design, though it is a worse seaboat, has less speed and less cruising speed.

Steve

Transoms were first used in the early 20s. Unfortunately, introduction was delayed because the Brits used it on a minelayer.... so the transom stern had the unfortunate habit of pulling in mines dropped from aft. :lol:

TBH, I was intending my 1922-1923 Battlecruiser design to have a transom stern. But it'd be a new, revolutionary feature.

Fingolfin_Noldor

Thanas wrote:

Fingolfin_Noldor wrote:

I worked up my first cruiser... hope it works well. Comments?

Transom sterns and bulbous bows...not sure if they were invented yet. Your deck armor is also seriously weak. Other than that, the ship is about on par with my own cruiser design, though it is a worse seaboat, has less speed and less cruising speed.

Some real life cruisers in the 1930s only have 2.5" deck armor.

Also, I wanted my cruisers to be able to steam all the way to Java one way or another. So some compromise had to be achieved. I have 10,000nm range for them.

I'm still tweaking them and doing some changes. Maybe 3" deck armor.

Thanas · **Joined:** 2004-06-26 07:49pm **Posts:** 5660

Fingolfin_Noldor wrote:

Also, I wanted my cruisers to be able to steam all the way to Java one way or another. So some compromise had to be achieved. I have 10,000nm range for them.

So do I.

Bluewolf · 100th post at 20/7/08 666th post at 19/9/09 747th post at 3/10/09

Quote:

Einheit Klasse, Germany Schlachtschiff laid down 1923

Permission to use this ship in my own navy?

Thanas · **Joined:** 2004-06-26 07:49pm **Posts:** 5660

Hmmm. As the first units would have been launched at the start of the game and would still be fitting out, I don't know.

I might have it launched in 1920 or 1921 instead (*checks* Yeah, that works in Springsharp), so export might have started in 1922 or 1924 in which case you might receive the first ships at the start of the game. PM me how many you would like to have.

Fingolfin_Noldor

Latest iteration of my cruiser...

Sparta, Byzantium Cruiser laid down 1922

Displacement:
14,100 t light; 14,714 t standard; 17,820 t normal; 20,305 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(618.83 ft / 590.55 ft) x 75.46 ft x (29.53 / 32.41 ft)
(188.62 m / 180.00 m) x 23.00 m x (9.00 / 9.88 m)

Armament:
9 - 8.00" / 203 mm 55.0 cal guns - 276.33lbs / 125.34kg shells, 150 per gun
Breech loading guns in turret on barbette mounts, 1922 Model
3 x 3-gun mounts on centreline ends, majority forward
1 raised mount - superfiring
4 - 5.00" / 127 mm 25.0 cal guns - 56.77lbs / 25.75kg shells, 150 per gun
Breech loading guns in casemate mounts, 1922 Model
4 x Single mounts on sides amidships
24 - 1.57" / 40.0 mm 60.0 cal guns - 2.14lbs / 0.97kg shells, 600 per gun
Anti-air guns in deck mounts, 1922 Model
6 x 4-gun mounts on sides, evenly spread
32 - 0.79" / 20.0 mm 70.0 cal guns - 0.27lbs / 0.12kg shells, 600 per gun
Anti-air guns in deck mounts, 1922 Model
8 x 4-gun mounts on sides, evenly spread
Weight of broadside 2,774 lbs / 1,258 kg
6 - 21.0" / 533 mm, 30.00 ft / 9.14 m torpedoes - 1.902 t each, 11.414 t total
In 6 sets of deck mounted carriage/fixed tubes

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 8.00" / 203 mm 400.00 ft / 121.92 m 18.00 ft / 5.49 m
Ends: Unarmoured
Main Belt covers 104 % of normal length

- Torpedo Bulkhead:
3.00" / 76 mm 400.00 ft / 121.92 m 10.00 ft / 3.05 m

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 8.00" / 203 mm 8.00" / 203 mm 8.00" / 203 mm

- Armoured deck - multiple decks: 3.00" / 76 mm For and Aft decks
Forecastle: 2.00" / 51 mm Quarter deck: 2.00" / 51 mm

- Conning towers: Forward 7.00" / 178 mm, Aft 0.00" / 0 mm

Machinery:
Oil fired boilers, steam turbines,
Electric motors, 4 shafts, 80,763 shp / 60,249 Kw = 30.00 kts
Range 10,000nm at 18.00 kts
Bunker at max displacement = 5,591 tons

Complement:
770 - 1,002

Cost:
£3.202 million / $12.809 million

Distribution of weights at normal displacement:
Armament: 904 tons, 5.1 %
- Guns: 893 tons, 5.0 %
- Torpedoes: 11 tons, 0.1 %
Armour: 5,290 tons, 29.7 %
- Belts: 2,410 tons, 13.5 %
- Torpedo bulkhead: 444 tons, 2.5 %
- Armament: 772 tons, 4.3 %
- Armour Deck: 1,561 tons, 8.8 %
- Conning Tower: 103 tons, 0.6 %
Machinery: 2,740 tons, 15.4 %
Hull, fittings & equipment: 5,130 tons, 28.8 %
Fuel, ammunition & stores: 3,720 tons, 20.9 %
Miscellaneous weights: 36 tons, 0.2 %
- On freeboard deck: 36 tons

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
24,156 lbs / 10,957 Kg = 94.4 x 8.0 " / 203 mm shells or 4.3 torpedoes
Stability (Unstable if below 1.00): 1.00
Metacentric height 3.3 ft / 1.0 m
Roll period: 17.5 seconds
Steadiness - As gun platform (Average = 50 %): 82 %
- Recoil effect (Restricted arc if above 1.00): 0.37
Seaboat quality (Average = 1.00): 1.08

Hull form characteristics:
Hull has raised forecastle, raised quarterdeck ,
a normal bow and large transom stern
Block coefficient (normal/deep): 0.474 / 0.492
Length to Beam Ratio: 7.83 : 1
'Natural speed' for length: 28.40 kts
Power going to wave formation at top speed: 56 %
Trim (Max stability = 0, Max steadiness = 100): 76
Bow angle (Positive = bow angles forward): 30.00 degrees
Stern overhang: 13.12 ft / 4.00 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 25.00 %, 26.25 ft / 8.00 m, 26.25 ft / 8.00 m
- Forward deck: 30.00 %, 16.40 ft / 5.00 m, 16.40 ft / 5.00 m
- Aft deck: 30.00 %, 16.40 ft / 5.00 m, 16.40 ft / 5.00 m
- Quarter deck: 15.00 %, 19.69 ft / 6.00 m, 19.69 ft / 6.00 m
- Average freeboard: 19.36 ft / 5.90 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 90.0 %
- Above water (accommodation/working, high = better): 121.1 %
Waterplane Area: 30,150 Square feet or 2,801 Square metres
Displacement factor (Displacement / loading): 131 %
Structure weight / hull surface area: 122 lbs/sq ft or 597 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.95
- Longitudinal: 1.62
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform

Lascaris

Thanas wrote:

And a 1.6kt German Destroyer.

You can built viable destroyer designs in Springsharp.

Yes you can. But I thought you had to bring composite strength to well below 1 to do so. Of course your design has a max speed of only 27 knots hence...

SDN World 3 Ship Design Thread

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