Good video here:
http://www.julietmarine.com/news.htm
Different vessel, but a good illustration of the benefits of SWATH.
https://www.youtube.com/watch?v=Xg6xyAKJOtE&index=1&list=PL6YOBh6yZDx2Z6UhBF3glgl-aHQQ6w0h2
Put half a dozen of these based off a Quarters/Maintenance/Fueling barge or two off the Horn of Africa.
Arm with Phalanx.
Bye bye, Pirates