Beachgoers on the northern coast of Egypt really got a show when the high-tech aquatic vehicle 29-year old Karim Amin designed and built with his friends cruised across the water. When most friends ...

When Spencer Yachts launched its first water-jet-powered sport-fisher, Jet Stream, a few years ago, the build raised quite a few eyebrows: A 50-foot Carolina-built beauty capable of 50-knot speeds, ...