Originally Posted by zip
do you know how much fuel you use in an hour at cruise?
how does the single i/o diesel compare to the twin ob?
Cruise is 2mpg if I'm lucky at 40mph 10 gph x2 = 20 gph I could slow down or run on one but what fun would that be?
50 mph = 30gph = 1.66 mpg = more gas in an hour than you burn in a day.
From what I recall a 315 yanmar burns 8-9 gph at cruise. A single four stroke outboard would give similar fuel burn of 10-12 gph
I'd use 1/2 the fuel if I bought a new four stroke single but I can buy a lot of gas for $20,000
BTW people frown a bit when I use the dinghy dock.