1986 43MY Cruise/burn

[Messi]

I was asked to ballpark delivery for a 1986 43MY. 6-71s

I'm guessing 12knt cruise....is that realistic? WHat do you supose the will burn?

Thanks

 

[bigbill]

12 knots is going to be too fast for hull speed and too slow for planeing speed. about 7-8 knots will be your hull speed, anything above that will make the fuel burn go up. a guess would be about 7 gallons per hour at hull speed

 

[brettportzer]

1.2nmpg at 1300 rpm, roughly 8 knots, is what we usually do.

1972 43DC 6-71N

 

[Dan Mapes]

We had an '85 with Covington 6-71 TIs and did quite a bit of cruising. We could get about 1.2 running around 8+ knots. If I ran the boat at 2,000 rpm with a full load ready for Winter in the Bahamas we could make 16.2 knots and I am thinking that was around 30 gallons an hour.
Wide open buck naked on the Callosahatchee we could make a tick under 21 knots.
YMMV

 

[Messi]

We had an '85 with Covington 6-71 TIs and did quite a bit of cruising. We could get about 1.2 running around 8+ knots. If I ran the boat at 2,000 rpm with a full load ready for Winter in the Bahamas we could make 16.2 knots and I am thinking that was around 30 gallons an hour.
Wide open buck naked on the Callosahatchee we could make a tick under 21 knots.
YMMV

You had that girl MOVIN'!

 

[Vincentc]

1983 DCMY 671 TI 1100 RPM 8 to 8.3 kts 1.4 nm per gallon without generator.

Anything above that will seriously reduce mpg.