Originally Posted by Searider
Rob if you were at sea for about 10 hours and used 260 litres (I think that what's you said) that's 26 litres per hour.
Surely that's about right if you were "gunning it as much as you could" with the boat "super heavy loaded".
For reference my 150 Optimax uses 56 litres per hour flat out according to the Smartcraft gauge.
22 litres per hour for 27 knots when the boat is lightly loaded.
Heavily loaded (8 people and weekend kit) it needs to be almost flat out for high 20 something knots.
Thanks for the reply, and actually its better than that - on the way out I had 210l and ran out 1mile offshore. Therefore its say 22l per hour.
Where I was really concerned was the return trip, as I used 260l for a 5 hour run and was gutted as thats not great consumption. But 3 weeks later I find there is still 110l in the main tank which to me ran out.
So based on those figures
Trip out - Avergage Speed 8 knots
Fuel Consumed - 210l (would really of been 220 had I not had the coastguard pick me up
Travel time = 10 hours
Total 21l per hour
Average Speed - 25knots (WOT for 2.5hours)
Fuel Consumed - 150l
Travel Time - 5 hours
Total - 30l per hour
Like I say the only spanner in the works was the thought that I had actually used 260l for the return and that would equate to a 52l per hour which is a sting in the pocket.
Searider - your speed andfuel figures are very much the same as mine, if I have 8 people on the boat it takes full throttle to get it up to the high 20 knots. But with a couple of light kids and a can of coke she will fly at 38knots.
Do you ever find when your boat is loaded the sea can sometimes "grip" the boat and your speed will drop and struggle, then suddenly it gets released and will surge back up tp speed