patrol boat
patrol ship

They sent a boy to tell me of the patrol ship.

It's not anything like the way you worked on that patrol ship.

This is the first time Patrol ships will fire at each other.

They should catch the Patrol ship within an hour and ten minutes.

They'll have one of their patrol ships over here in a day or two - if it hasn't been shot down.

A door in the side of the patrol ship opened, and an officer appeared.

The patrol ship obviously wasn't on station, and said so.

Our local patrol ships are more than a match for them.

A patrol ship could come to make repairs, and it would find out what had happened.

A day later, the two Patrol ships had slowed and were coming back.