I have a 1981 Cheoy Lee Ketch
, 41', 12' 6" Beam, 6' Draft
, 25 Gross Tons. I read an article by Steve D'Antonio about engines running under full load and reaching maximum power. When you run the boat with the throttle wide open the boat should come up to it's maximum RPMs and not overheat.
Today I filled the boat up with our normal cruising load of full water
and fuel tanks
and we slowly increased the throttle to full forward and our RPMs came up to 2700, not the 3000 that we had back in San Diego before we left to go cruising. We were towing our 8' Walker Bay dinghy
during the test. We cruised for 5 minutes with the throttle wide open. The cooling
system functioned as it should, the temperature stayed right around our normal 180 degrees, there was a small creep up to maybe 186 so our cooling
system is doing great.
I don't think the dinghy
would cause the engine
RPMs to not come up to 3000, but maybe there is a prop size mismatch?