Even a submarine with a hull strong enough to survive deep sea and a nuclear reactor on board floats. I'm sure whatever they build things out of in 300 years will be 10 times stronger and 10 times lighter, so I think it's unlikely it'll sink.
The only time we've seen a ship in H20 was the BOP in STIV, which obviously sprang a leak, yet sank pretty slowly anyway, and never did go all the way down. I think a BOP is at least as dense as a Federation ship (probably more dense).
The only time we've seen a ship in H20 was the BOP in STIV, which obviously sprang a leak, yet sank pretty slowly anyway, and never did go all the way down. I think a BOP is at least as dense as a Federation ship (probably more dense).