When it came to engine selection, Sessa went for raw power and specified a pair of 1,360-horsepower MAN V12 diesels on our test boat, coupled to Twin Disc V-drives. (Standard power is a pair of 1,100-horspower MAN V10 diesels.) When I first drove the 68, she was still in the prototype stage, yet we achieved a top speed of 38 knots. (This speed, in my opinion, is plenty fast for a cruising boat such as the 68. In reality, unless you're sprinting to lunch in Catalina or Bimini in dead-calm seas, a high 20-knot cruise speed is where most of us will find comfort.) At about 2000 rpm, we easily achieved and maintained a cruising speed of 30 knots. She's relatively quiet at these speeds, with a sound reading of 78 decibels, and 82 decibels at top speed.