One idea from me is the ones that don't like to fight but the younger ones if I had to guess make them like transport ships like a liberty ship factory ship or an LST as for the others they could be between battleships, carriers, destroyers or cruisers. And if some don't like those they can become undercover like Titanic as an ocean liner but with weapons examples for ocean liners you can pick is like Lusitania Carpathia or Queen Mary as for examples hopefully that would help