I see you have a 42’ Silverton yacht, powered by twin diesels. that sounds nice. I am a marine mechanic and live here in Charlevoix, Mi. on northern Lake Michigan. My buddy has a 58’ Sea Ray 580 Sedan Bridge powered by twin 800 hp. Caterpillar Diesels. The lower level is done up in birds-eye maple which is spectacular. Quite the boat at 30+ knots on Lake Michigan.
My Silverton is powered by twin 480 hp Yanmar straight six diesels and the only word I have for them is *sweet*.
At 70% throttle she will cruise at around 22kt with 15gal/hour fuel burn. She's a slow sipper.