Forum:Guesstimating Fleet Sizes

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Background: I'm trying to develop naval orders of battle for a non-Imperial state (Principality of Caledon) and perhaps some of its minor neighbors and constituent systems.

I used to have this written up (as in 25 years ago), but I've long since lost both those notes and my copies of Trillion Credit Squadron and High Guard.

So my question is this:

Question: Does anyone have any guidelines or rules of thumb as to how much naval tonnage a system, or group of systems, can pay for, at least on a general level? I'd hate to call out an absurdly large fleet.

I know it's a complex question, and that I really need to break down and find a copy of Trillion Credit Squadron. But until I do...

Thanks in advance.

Mitchberg (talk) 13:14, 6 September 2013 (EDT)

The TCS and HG rules end started with 0.5Kcr per person in taxes for the Naval (military) budget. So that forms the basis of your budget. You may want to subtract off 10% to 30% for the other military arms, and normal functions of the Navy. Depending on how militaristic your world was, that could increase by as much as 50%, plus 50% if you empire was in a real shooting war. You can spend 10x that amount on ships, given that the basic maintenance on ships is 1/10 their original cost per year. About 10% of the budget can be spent on new ships, the rest on older ships or older designs. Converting the budget into ship tonnage was never discussed. I've seen some estimates, but it widely depends upon the specific rules used for building the ships. Tjoneslo (talk) 15:28, 6 September 2013 (EDT)

That's exactly what I was looking for. Thanks. Mitchberg (talk) 15:37, 6 September 2013 (EDT)

However, Thomas is wrong. The Cr500 per man (modified by government type, BTW) is the naval budget alone, with the army paid for over and above that. It's also a simplification. Striker gives a more detailed scheme. GWP (Gross World Product) is calculated per person according to tech level and modified by trade classifications. Military spending is between 1 and 15% of GWP, with the highest figures reached in wartime and not sustainable in the long run. Peacetime expenditure probably has a maximum around 10% (The US reached 8% during the Cold War). Imperial worlds averages 3%. TCS worlds are pocket empires surrounded by hostile pocket empires, so their peacetime expenditure seems to be in the high end. Of the military budget, a world pays a certain percentage to the interstellar government if it is a member of an interstellar government (Imperial worlds pay 30% of their military budgets to the Imperium). The rest (or all if the world is on its own) is split between the army and the navy. The split depends on surface conditions; for worlds with breathable air the army gets 40%, for airless worlds the army gets 6%. Rancke (talk) 07:29, 7 September 2013 (EDT)