Depending on the specific class of boat, I usually get the best fuel economy somewhere in the 9 to 9.5 knot range. S-Boats (for me) are usually in the 8 to 8.5 knot range. I usually experiment when I first leave home port with a new boat. I'm using TMO so I just have the navigator call out the max range for several different speed settings before choosing the one with best mileage.
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" The journey of a thousand miles begins with a single step."
-Miyamoto Musashi
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" What is truth?"
-Pontius Pilate
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