Apparently they tested a variety of weaponry against small boats simulating what pirates are using these days. Here's a pic of a 2000 lb GBU-10 dropped from a B-1B about to hit a small boat.
You don't need any explosives for that application. Use the Israeli concrete bombs. But yeah, HE is much more fun.
And let's get one thing straight. There's a big difference between a pilot and an aviator. One is a technician; the other is an artist in love with flight. — E. B. Jeppesen