The term TYPE OF SHIP can refer to three different types of ships: an OILER (5 letters), a TROOP (5 letters), and a PENMAN (6 letters). An oiler is a type of ship that carries oil, usually from one port to another. A TROOP is a type of ship that is used to transport troops, typically for military purposes. Finally, a PENMAN is a type of ship that is used to transport goods, such as cargo or passengers, from one port to another.