The size of a ship is usually given as displacement in long tons.

A ship’s armor is the protective armor along the sides of the ship, on the deck, and on some gun mounts and turrets.

The term used to indicate the speed of a ship is the knot, which is 1 nautical mile per hour or about 1 1/8 statute miles per hour.

The four categories of ships are—
a. Auxiliary ships
b. Combatant craft
c. Combatant ships
d. Support craft

The categories of warships include—
a. Aircraft carriers
b. Battleships
c. Cruisers
d. Destroyers
e. Frigates
f. Submarines

The battleships are named after states.

The two basic classes of cruisers are—
a. Guided-missile cruisers (CG)
b. Guided-missile cruisers nuclear (CGN)

For protection, the destroyer depends on its speed and mobility.

The class of ship developed for the purpose of open ocean escort and patrol was the frigates.

The two classes of submarines are the—
a. Attack submarine, and the
b. Ballistic missile submarine

The class of ship used to land large numbers of personnel, equipment, and supplies on enemy held territory is the amphibious war ship.

The term used to describe the transfer of fuel and supplies between ships while under way is replenishment at sea.

Usually, ships maintain a distance of 100 feet while taking on supplies at sea.

A receiving ship can stay on station in combat formation while under going vertical replenishment.

The largest and most powerful auxiliary ship is the fast combat support ship (AOE).

Rescue, salvage, and towing ships provide rapid firefighting, dewatering, battle damage repair, and rescue towing assistance.

Support craft designators usually start with the letter Y