RE: combat submarines
If I may make a sagestion. in my club we have one guy who built a 1/144 co2 powered torpedo, we say ok try it. excelent in theory but in excecution, the torpedo lached out of the water and we then had to div efor cover. another fellow not to be out done disasembled a small caliber gun and use it for a loading system.
here are the steps.
1) doors are closed
2) small C02 canister comes forward and locks into the torp door and injects Co2 through a 1 way valve, this ge rid of water in the loading tube
3) door opens and the Drum inserts a 1/4 inch BB into the tube
4) door shuts
5) tube is slowly flooded
6) small c02 canister come forward and looks in place
7)on command of the pilot the co2 propels the metal BB 1.2 feet out of the tube
the process is reapeated
as for using rockets, most clubs realy on Conways "All the worlds fighting ships" submarine lanched missiles wernt used until the 70s. so the use of missiles would be baned