2 liters per 1,8 km it is 0,9 km per 1 liter
I have HIGHFIELD OM540DL with EVINRUDE 115 HO + Evinrude Rebel 19" prop
Usually till 3800 - 4200 RPM (which gives me about 45 km/hr - 50 km/hr) I see very often fuel consumption like:
2 km per 1 liter which is 2 times better
sometimes (wind waves)
1,8 km per 1 liter
It is moder 2T but when compare to HONDA BF100 (which is 4T) with the same boat (Steve from SeaSwift send me some details) I have the same consumption at higher speed.
5 people on board (about 300 kg), 2 batteries, 2 anchors, 100l of fuel, 20 l spare fuel, snorkel equipment for 5 people.
Boat weight with fuel and all items about 900 kg.
Passengers and bags - maybe 320
WOT is 5500 rpm