He loves to dive into the sea.

He is the captain of that warship.

He is making a model of a battleship.

He always seemed to be hiding something, always avoiding being seen.

He is using methods to avoid search engines so that his information does not get caught by them.

He explored the deep sea in a submersible.

The corvette is responsible for maritime security duties.

A destroyer is a warship designed to pursue enemy submarines.

The escort ship has entered the port.

This battleship played an active role in World War II.