Well, theres always zeppelins and biplanes for the traditional sky pirate. (Crimson Skies and Tailspin come to mind.) Are you going for retro-future (rayguns and cutlass) or future future? (ray sword & cutgun)

I'm trying to use at least some of these rules to make a sub hunting game. Won't be a one page though - the description of of the differences between type VII, IX, and XXI Is already half a page without anything else. (VII turn faster, IX have more torpedoes and a bigger deck gun, and the latter are just plain terrifying.)

So far, I've got notes about surface vs underwater running, torpedo range, and I plan on giving the destroyers the choice between depth charges and hedgehogs. Rather than hidden movement, it works out as either

A) ships move first, subs second,
B) ships are plotted, subs are free move or
C) a hybrid, where all get plotted, but subs also have an allotment of free move to shift around after that.

Even if you see everything in game, there are some unknowns about u-boat positioning. Hopefully it will work well enough to eliminate the need for separate board and a referee etc.

Actually, this would be my second or third attempt to write a sub game. I know you have an interest in this time period, so do you have any suggestions or things you'd like to see?

There is a fine line between hobby and obsession. I seem to have lost sight of it some time ago.