Macrocannon Size

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WhiteLion
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Macrocannon Size

Post by WhiteLion » 2019-09-10 02:52am

Hi everyone, I noticed that when we talk about macrocannons on the forums, we are referring to them shooting bullets 50 meters in diameter. But seeing the images of the ships it is clear that the macrocannons do not have the same dimensions, for example the macrocannons of a Glorian class, looking at the photos, are 2-3 times larger than those of a cruiser, as they are always taken into consideration only those from 50m of caliber towards spaceships?

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Re: Macrocannon Size

Post by Imperial Overlord » 2019-09-10 05:04am

40K Macro cannons come in various sizes, all of them fucking big. That's why, except when quoting specific examples, they are spoken of in rather general terms. The number of guns and the size of said guns can vary considerably between ships of the same general class.
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Re: Macrocannon Size

Post by WhiteLion » 2019-09-11 02:07pm

Thanks Imperial Overlord. Looking at the pictures of the Glorian Classes and of the Ark Hope, approximately how big should the guns be? Considering that those of an average cruiser are 50 meters in diameter

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Re: Macrocannon Size

Post by Elheru Aran » 2019-09-11 02:41pm

You're not going to find out unless you do some math. Pretty sure it's never stated except in pretty general terms ("this gun is fecking BIG") except in a few very rare examples.

Just scale it up a bit, say if the Glorianas are 20ish km in length, and an 'average cruiser' is 5ish km, then the biggest macrocannon might be 200m diameter. Which is pretty dang big. But just scaling it up 4x isn't necessarily the answer... all you can conclusively say is that a Gloriana's macrocannons are probably bigger than a cruiser macrocannon.
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Re: Macrocannon Size

Post by WhiteLion » 2019-09-12 07:16pm

I understand thanks, it would be interesting to deduce from the images how big the macrocannons and lances of an Abyss Class or an Ark Hope are, they are as big as a continent

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Re: Macrocannon Size

Post by Imperial Overlord » 2019-09-13 06:54pm

No they aren't. The Furious Abyss was larger than a Glorianna, but still smaller than Phalanx and no where near continent size. Ark Mechanicus are battleship sized, although Speranza which has Dark Age Technology, is probably Glorianna sized.
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Re: Macrocannon Size

Post by WhiteLion » 2019-09-13 10:59pm

But in the novels it is expressly said that they were the size of a continent, even the imperator somnium is defined as such, so large as to have their own gravitational field capable of hindering the navigation of other ships.

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Re: Macrocannon Size

Post by Imperial Overlord » 2019-09-14 12:02am

What is expressly said to be the size of a continent? Certainly not the Imperator Somnium, which is merely fucking huge. The Furious Abyss class dwarf Glorianna's but are no where near the thousand kilometer plus size necessary for a literal claim of "continental". Is it a literal claim or a hyperbolic description meant to convey how overwhelmingly large it appears? As for having a gravitational field, everything with a mass has them. We know the calculation of Mandeville points is quite sensitive to the influence of gravity but vague on the specifics so again, it doesn't give us anything concrete.
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Re: Macrocannon Size

Post by WhiteLion » 2019-09-15 12:02am

From the novels it is clear only that they are as big as a continent, if it is written there it is canon, certainly it could be a hyperbole, but a ship of 100-300 km even with a hyperbole compares it to a continent, it must be thousands large of km at least to make a hyperbola with a continent. Furthermore, if you read Priest of Mars and Lords of Mars, environments are described that are too large to fit into the dimensions of common ships such as the Gloriana (which in any case are ships that reach up to 26 km).

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Re: Macrocannon Size

Post by Imperial Overlord » 2019-09-15 02:26am

Wrong. Nothing about the Speranza's insides indicate anything like 100km. It has multi kilometer long decks and hangar bays, which a 20km vessel could manage and a 30km vessel manage even easier. There are no hard numbers on the Furious Abyss, but it is consistently described as being the largest battleship ever built not of being whole orders of magnitudes larger than a Glorianna. Moreover its interactions with the vessels attacking it are those of a vessel that is actually threatened by thrown together squadron of Imperial ships, not a 100km+ beast that could shrug them off. Furthermore the boarding action that occurs on Furious Abyss is not indicative a 100km+ vessel. Continental doesn't apply to either.
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Re: Macrocannon Size

Post by WhiteLion » 2019-09-19 03:03am

speaking to an iter who read the Forges of Mars series, he gave me these reflections (I report them as I read them):

"Declared to be as big as a continent (as a continent? Who knows)

Its docking bays are large enough to hold more warships inside. One example is the 3 km Renard Trader, which is the size of a cruiser. I don't remember if the entire support fleet was also moored inside. I just know that the half dozen or the cruisers were definitely out of it to protect him.

It has its own gravity well, forcing the ships to tie in a tail like a tractor beam to dock inside, at least the size of a moon.

When he made a hole in the warp by himself, the door was so large that the rest of the fleet could easily fit.

It has more training rooms for Titan

My favorite: they used high-speed trains to get around the inside of the ship.

It was large enough to fill more gravity distortions that were powerful enough to destroy its escort cruisers, including the Black Templar cruiser, suffering only severe damage to the affected parts

It has more terraforming machines of 10 km in diameter attached to the lower side (at least 4 iirc)

The battle scenes when embarked support the idea that it's fucking huge, in case you haven't noticed the hundreds of tanks and superpowers, titans and thousands of infantry fighting in one area (one of the training rooms) . "

In my opinion, the fact of having a gravitational field capable of stopping the navigation of ships already suggests a mass greater than a 30km ship.
The terraforming machines on board are 4, each 10 km long, only they occupy 40 km of space.
In addition to this there are the war drill rooms where whole armies of earth must move.
There are also several docking bays for the support fleet, each bay can accommodate huge ships, the 3 km Renard Trader is mentioned in one of the bays.

From an objective observation all these environments cannot be contained in 30-50 km, must necessarily be larger, at least 100km.
Which classifies the continental quotation as hyperbole, but we cannot attribute it common dimensions of 30-50km, because simply all the environments that are seen in the novel could not be accommodated inside it.

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