What engines are 700hp or more in a commercial rating? Looks like Iveco has a 13 liter that is 750hp in their A2 rating, and the C-18 Cat is 885 hp in their D rating. It also looks like the Volvo D13 has a commercial rating of 700hp. Does MAN or Scania also have a 700-800hp commercially rated engine? A friend is thinking of having a boat built and wants to go with a lot of power in a 40' boat. I would personally go with the Deere 13.5 liter at 650hp, but it sounds like he wants more than 650hp.