Funny this topic came up...on ship shape TV yesterday they had a program on defense against pirates. They even had one of the Mossberg's there with their array of weapons, and took the viewer on a trip through their factory.

The law enforcement expert on the show suggesting putting a round through the hull just below the water line angled downward so it made two holes...one in the side and one in the bottom as it exited. They seemed to ignore the fact that many boats have closed cell foam flotation in the bottom. Good luck with that technique on a Boston Whaler.

The weapon of choice was a 12 gauge shooting riffled slugs. After the shot to the hull you were to follow up with two rounds to the engines so they couldn't follow you...they didn't say anything about how to do this while the "bad" guys are spraying you down with automatic weapon fire from an AK47 ...LOL

Since Cats don't have engines I guess if you are a really good shot (Ex Navy SEAL), two slugs to the mast base or chain plates might suffice in lou of the engines...

Regards,
Bob