They're named by their functions--a ship that carries ISOtainers is a "container ship," a ship that carries passengers across the oceans is an ocean liner, a naval ship that launches and retrieves aircraft is an aircraft carrier, and so on and so forth.
Another name for a dismantled ship is a HULK
shipwreck, sunken ship
Ship, Space Ship, or plane.
The deck.
a Keel
ship
ship yacht
Big ship. Vessel. Carrier.
A cruise ship.
Bilge rats
crues liner
Cargo is the common term.