Ok, I'll try to asnwer all of your questions!
Letum, I'm going to go solo on this project, maybe in future updates. I've got enough money invested on this I can't afford much more, and with what I have left is going to a particle system and some other stuff.
Deamon.. The sky texture is actually a real photo, I have several others, and here's a screen with another skytex, everyone loves new media!
Use a sphere as your sky instead of a skybox. It looks better IMHO, at least with my types of sky textures. If you would like I can take more pictures and send you a .zip of sky textures free of charge. Infact, I was thinking about doing this anyways because everyone loves my skies.
dcb - to be compared to Aces of Deep is really a good compliment, but I've never played AOD so I don't know much about what it's like. I've only played SH2 and SH3 and watched Das Boot three times, and that's what I'm aiming for, is realism and grittiness of Das Boot. Expect a demo in July, might just be a training mission or something but will get you to feel the helm of the ship in your hands!
FIREWALL, I'll do my best..
Any suggestions you guys have I'm open to them. My next little showcase will feature some explosions!