If the fuel
cost is a factor in your decision, you should probably consider not buying a boat
Difficult to give answer without more information. Specific vessel, engines, desired speed , etc. all have a bearing on the number. At max it could be 0.8 nmpg, at 6 kts it could be 3 nmpg.
With the average power boat
running around in the 100 to 150 hrs per season, the fuel cost is not a significant factor when you consider depreciation, loss of investment opportunity, insurance
, etc. Just insurance
alone costs me 4 times my fuel cost.
Someone once told me ďA wise man never works out his overall cost per nmpg and if he does, he never tells his wife.Ē