They should have used White Phosphorous

The sonic device that helped ward off the attack, known as a Long Range Acoustic Device, or LRAD, is a so-called ?non-lethal weapon? developed for the military after the 2000 attack on the USS Cole in Yemen as a way to keep operators of small boats from approaching U.S. warships. Makers of the device compare its shrill tone to that of smoke detectors, only much louder.

it's a hell of a lot louder than a smoke detector. Unless a smoke detector can make you violently ill and reduce you to a quivering pile of shit-panted pirate.

And it's not a war crime either.