Cruising Speeds

[Maxumise]

I did some math and used a mercruiser fuel calculator website to find out the following:

If I need to be somewhere and want the most fuel efficiency, I should cruise at 3.000 RPM burning the least fuel per mile. But if I am just cruising around and want to boat for as long as possible with the least fuel use in total, then I cruise at +/- 1300 rpm. That way I use the least amount of fuel per hour.

So it al depends on what you try to archive. More time on the water or more miles to cover

[PJHoffnet]

Originally Posted by CapPap

Thanks PJ. That’s what I am curious about. However, I wonder if the larger yachts such as yours with diesels are more likely to travel at the slower speeds. My 35 footer has gas engines. I may try a journey at slower speed this summer to test it out. Time is less of an issue for me these days.

Concur, gas guzzlers are a completely game then my slow rolling diesel. 'fraid I can't speak to that, but there are plenty here who can.