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Old 31 May 2007, 19:12   #1
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Country: UK - Scotland
Town: West Linton.EH467BT
Boat name: Meg
Make: Osprey
Length: 6m +
Engine: Yamaha 115 v4
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How Much For How Long ?

Can anyone give me an idea of approx. fuel consumption of Yamaha 115 V4 outboard at normal cruise speed on 6m RIB
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Old 31 May 2007, 19:18   #2
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Country: UK - England
Town: The wilds of Wiltshire
Boat name: WhiteNoise/Dominator
Make: Ballistic 7.8/SR5.4
Length: 7m +
Engine: Opti 225/Yam 85
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What do you call normal cruise speed?
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Old 31 May 2007, 19:27   #3
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Country: UK - Scotland
Town: West Linton.EH467BT
Boat name: Meg
Make: Osprey
Length: 6m +
Engine: Yamaha 115 v4
Join Date: May 2007
Posts: 7
Hmfhl.

Assuming 25 /30 knots on an Osprey XR20.
New to all this so trying to work out some kind of budget for running new toy.
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Old 31 May 2007, 20:04   #4
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Country: UK - England
Town: The wilds of Wiltshire
Boat name: WhiteNoise/Dominator
Make: Ballistic 7.8/SR5.4
Length: 7m +
Engine: Opti 225/Yam 85
MMSI: 235090687/235055163
Join Date: Jul 2005
Posts: 12,645
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Hard question really-probably around 25-30 litres/hour but a lot depends on your driving style and weather. Max should be around 50 litres/hour but that's at full throttle and you won't use that constantly.

Best bet is to fill it right up and go out for a day to work it out.
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Old 31 May 2007, 20:08   #5
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Country: UK - Scotland
Town: West Linton.EH467BT
Boat name: Meg
Make: Osprey
Length: 6m +
Engine: Yamaha 115 v4
Join Date: May 2007
Posts: 7
Sounds like a plan.
Cheers.
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Old 01 June 2007, 15:16   #6
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Ian I rekon you will use about 1.2 litres per nautical mile at 30 knots so roughtly what NOS said.

What Prop you are running will have an impact on this.

I recently installed one of the Northstar fuel computers and its really useful for guaging your fuel usage.

Chris
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