Quote:
Originally Posted by codeman671
I was watching the Garmin MFD, equipped with the engine gauges/integration in my Finseeker center console this weekend. After filling up at Y and heading back at full speed (as I usually do), I burned 2 gallons getting back to the house. At full throttle it consumes 16-18gph. $12+ bucks each way to the gas station alone...I guess I need to slow down!  |
To my point above, slowing down might be beneficial to fuel burn, but you might also be surprised to see that it is not a linear relationship.
Assuming your boat is similar to the one tested here:
https://www.boatingmag.com/2020-finseeker-220-cc/
Slowing down to 18.9 knots would yield an increase in fuel economy, but below that pretty much anything down to hull speed is actually going to iNCREASE fuel burn.