note that 50 tons for spotting planes, intended to represent two aircraft and the crap needed to support them (I assume 25 tons per aircraft). I suggest that anyone who wants to put spotting planes on their ships should be required to account for them in using misc. weight.HMS Sahisahy, Magagascar Battleship laid down 1925
Displacement:
28,325 t light; 30,000 t standard; 31,063 t normal; 31,914 t full load
Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(583.98 ft / 574.97 ft) x 100.00 ft x (29.00 / 29.68 ft)
(178.00 m / 175.25 m) x 30.48 m x (8.84 / 9.05 m)
Armament:
8 - 15.75" / 400 mm 45.0 cal guns - 2,237.69lbs / 1,015.00kg shells, 90 per gun
Breech loading guns in turret on barbette mounts, 1925 Model
2 x 3-gun mounts on centreline ends, evenly spread
1 x 2-gun mount on centreline forward
1 raised mount
12 - 5.51" / 140 mm 50.0 cal guns - 83.78lbs / 38.00kg shells, 200 per gun
Quick firing guns in deck and hoist mounts, 1925 Model
6 x Twin mounts on sides, evenly spread
6 - 4.33" / 110 mm 45.0 cal guns - 39.68lbs / 18.00kg shells, 350 per gun
Dual purpose guns in deck and hoist mounts, 1925 Model
6 x Single mounts on centreline, evenly spread
6 raised mounts
Weight of broadside 19,145 lbs / 8,684 kg
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 14.2" / 360 mm 344.49 ft / 105.00 m 14.76 ft / 4.50 m
Ends: Unarmoured
Main Belt covers 92 % of normal length
Main Belt inclined 10.00 degrees (positive = in)
- Torpedo Bulkhead - Additional damage containing bulkheads:
1.97" / 50 mm 344.49 ft / 105.00 m 27.50 ft / 8.38 m
Beam between torpedo bulkheads 74.97 ft / 22.85 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 17.7" / 450 mm 9.84" / 250 mm 16.1" / 410 mm
2nd: 1.97" / 50 mm 1.97" / 50 mm 1.97" / 50 mm
3rd: 1.97" / 50 mm - 1.97" / 50 mm
- Armoured deck - multiple decks:
For and Aft decks: 6.50" / 165 mm
- Conning towers: Forward 16.14" / 410 mm, Aft 0.00" / 0 mm
Machinery:
Coal and oil fired boilers, steam turbines,
Electric motors, 4 shafts, 57,501 shp / 42,896 Kw = 23.50 kts
Range 5,400nm at 12.00 kts
Bunker at max displacement = 1,914 tons (33% coal)
Complement:
1,169 - 1,520
Cost:
£9.377 million / $37.506 million
Distribution of weights at normal displacement:
Armament: 3,460 tons, 11.1 %
- Guns: 3,460 tons, 11.1 %
Armour: 11,840 tons, 38.1 %
- Belts: 3,293 tons, 10.6 %
- Torpedo bulkhead: 690 tons, 2.2 %
- Armament: 3,386 tons, 10.9 %
- Armour Deck: 4,128 tons, 13.3 %
- Conning Tower: 344 tons, 1.1 %
Machinery: 1,925 tons, 6.2 %
Hull, fittings & equipment: 11,050 tons, 35.6 %
Fuel, ammunition & stores: 2,738 tons, 8.8 %
Miscellaneous weights: 50 tons, 0.2 %
- On freeboard deck: 50 tons
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
43,035 lbs / 19,520 Kg = 22.0 x 15.7 " / 400 mm shells or 7.3 torpedoes
Stability (Unstable if below 1.00): 1.10
Metacentric height 6.0 ft / 1.8 m
Roll period: 17.1 seconds
Steadiness - As gun platform (Average = 50 %): 59 %
- Recoil effect (Restricted arc if above 1.00): 0.81
Seaboat quality (Average = 1.00): 1.03
Hull form characteristics:
Hull has rise forward of midbreak,
a normal bow and a round stern
Block coefficient (normal/deep): 0.652 / 0.655
Length to Beam Ratio: 5.75 : 1
'Natural speed' for length: 23.98 kts
Power going to wave formation at top speed: 53 %
Trim (Max stability = 0, Max steadiness = 100): 57
Bow angle (Positive = bow angles forward): 14.68 degrees
Stern overhang: 3.00 ft / 0.91 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 21.00 %, 22.97 ft / 7.00 m, 21.00 ft / 6.40 m
- Forward deck: 50.00 %, 21.00 ft / 6.40 m, 21.00 ft / 6.40 m
- Aft deck: 10.00 %, 11.02 ft / 3.36 m, 11.02 ft / 3.36 m
- Quarter deck: 19.00 %, 11.02 ft / 3.36 m, 11.02 ft / 3.36 m
- Average freeboard: 18.27 ft / 5.57 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 89.9 %
- Above water (accommodation/working, high = better): 139.0 %
Waterplane Area: 44,126 Square feet or 4,099 Square metres
Displacement factor (Displacement / loading): 100 %
Structure weight / hull surface area: 216 lbs/sq ft or 1,052 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.94
- Longitudinal: 1.68
- Overall: 1.00
Adequate machinery, storage, compartmentation space
Excellent accommodation and workspace room
Note: 50 tons misc. for aircraft installation
Any other suggestions for miscellaneous weights players should account for in Springsharp designs?
P.S. One final note concerning Ryan's designs: I could be mistaken, but I just noticed that he seems to have forgotten to add barbette armor to the main battery; if so, that's a rather serious oversight.