Originally Posted by ScottH
Engine size has been a concern because we don't want to wind up with a boat that that we love in every other respect but that we can't afford to cruise any distance in because of fuel costs. If small engines were the only way to get good fuel economy, then we'd be forced to limit ourselves to boats that have them.
I know this ship, it's an incredible economy of fuel consumption. engines is 14 liters / cylinder and has five rows of 70 liters displacemet and about 500 hp. He's 83 feet tall and weighs 135,000kg. Cruises at 8.5kn at 6.5 gal / h or 1.3nm / gal. I think the big engine can be economical, this engine (Wärtsilä 514T) is from 1966, that is not the latest technology.
Vinces (Turku, Finland)