3 Words to use with gunboat

He wrote from ten miles below Tientsin, which place he was going to occupy with his small gunboat force.

As I was saying, that was a clever bluff of yoursI mean the gunboat goblin.

With generous courtesy the Paraguayan Government had put at my disposal the gunboat-yacht of the President himself, a most comfortable river steamer, and so the opening days of our trip were pleasant in every way.

3 Words to use with  gunboat