OldDan1943
Guru
- Joined
- Oct 2, 2017
- Messages
- 10,634
- Location
- USA
- Vessel Name
- Kinja
- Vessel Make
- American Tug 34 #116 2008
I generally cruise at around 10kts, burning 20 gallons an hour with twin DD 8V92s. Last week on an hour's run with no hurry to be anywhere I decided to see how slow I would have to go to halve my fuel burn (thinking that the price has roughly doubled). I was astonished to find that 10 GPH correlated to 8kts. I am quite happy at 8kts most of the time, so that is my planned adjustment for general tootling around. Our big annual run is about 200 NM each way and for that I will suck it up (literally!) at a higher speed/fuel burn.
If you drop your speed to 7knots, perhaps you will gain another .4gal/hr??
If one owns a 'true' 7.X knt hull speed trawler you never can go fast.
__________________