Unfortunatly I could not open the pics in post #14. I'm not sure which boats were being shown. Being a former SEAL and spending time in the Special Boat Unit, I have been around HSB's a lot. The term HSB is a generic term that we use for the offshore boats. We have used 41ft Fountains, Halter Marine, and USMI's. Engines were originally 500 Bulldogs, then went to Innovation Marine's 557's. Then eventually 575's. The USMI boats are the newer versions and were designed for the Navy. These boats are VERY strong and VERY heavy...About 15K pounds. They may not be the fastest hulls but they CRUSH waves. These boats are Cadilacs. MUCH, much better than any of the Combat RHIBs that are employed today. And because of the tall freeboard, they provide a dry ride for the crew... A good thing when it's -10 degrees outside.