Big ship. Vessel. Carrier.
ship
A cruise ship.
Another name for a dismantled ship is a HULK
Titanic
shipwreck, sunken ship
Ship, Space Ship, or plane.
Another name for a large (boat) ship apart from a cruise ship would be passenger ship and above that would be ocean liner. An ocean liner and a cruise ship are two different types of passenger ships.
The opposite of a large ship could be a small boat.
The deck.
a Keel
ship yacht
"liner"Source: True Knowledge