Funny you should ask-I installed a cheap navman this year and what a learning experience in efficiency.That 32 was at around 3200-3300, but since I've installed the meter-my best rpm is right around 3000-cruising about 28 in relatively calm seas. That's at a burn of about 10 gph, give or take .1 or .2. The chop on LI sound can change that in a hurry. I ran it at 4000/4001-a little short of wot, which is in the 4400-4800 range according to merc, and I was running just about 30 knots-I think it was 29.7. I/m guessing wot will take me to 37-38 mph.
I'll get you some exact #'s this weekend at 3200 for comparison's sake.
The motor is a carbed merc 5.7 which has been running for about four years of light use, which has change to heavy use since I got the boat
I know everyone here is big tab fans, but so far I'm very happy with t he planing capabilities(if I give it the juice it planes almost immediately) of this boat and since I usually fish with one or two guys on board-it's pretty easy to redistribute the weight.