guard boat

You will not shout a greeting to the guard boat.

Soon they were under the guard boats near the channel.

If there was a guard boat, it must be on the far side of the frigate.

It was probably assumed to be a guard boat itself.

Two other guards also keep a silent watch, and a guard boat follows, with a half-dozen others on board.

I keep a guard boat out upriver during the night.

They'll be around when we're out on the reef, waiting for the guard boat.

They'd be tired enough to make it too dangerous to attack a guard boat, even if one came by.

For some reason the guard boat was rowing its rounds inside the reef tonight, rather than just outside it.

A guard boat crewed by three nearly naked people would certainly be suspected.