"Multi-person" doesn't do it justice. The battleships are designed to be run with a deck crew of 16+. Submarines 8, and destroyers 12+.
It's going to be a major task of coordination for these things to be run. I've seen players have a hard time coordinating tanks, and that's usually just a driver and a gunner.
There's that game with untextured polygonal graphics about naval combat that's aimed towards having several players running a carrier. Dammit, what's the name of that?