When they got to the gambling ship down in the Caribbean, that would be the first chance to do it there.

I've been poking around and have found some interesting stuff out about their gambling ship.

Actually, I was thinking in terms of a gambling ship.

Didn't they sink a gambling ship that refused to pay them protection, a few years back?

I've had two men on him ever since he came ashore from the gambling ship.

I'll arrange to be aboard the gambling ship when the service is made.

Both women were evidently aboard the gambling ship at the time the murder was committed.

"How long have you been out there on the gambling ship?"

"Have you," Mason asked, "reported everything which happened out on the gambling ship?"

A couple of times men picked her up on the gambling ship, and she played around a bit with them.