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Old 20 August 2019, 14:39   #21
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Country: Finland
Town: Helsinki
Boat name: Harmaakarhu
Make: Avon SR6
Length: 6m +
Engine: Yamaha F150
Join Date: Feb 2009
Posts: 84
Similar setup?

I have a Yamaha F150 2011 in my SR6. Yesterday I went for a run that was quite mixed driving, all from going at idle to blasting 40 knots and then also some slow surfing at big swell. My ride was 15,3 miles and I used 19,8 litres. Which makes it 0,77 NM/l. Usually when cruising I get about 1:1 or even a bit more economical.
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Old 21 August 2019, 02:39   #22
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Country: UK - England
Town: Plymouth
Boat name: Sword
Make: Nautica 20
Length: 6m +
Engine: 150 Yammy
Join Date: Sep 2014
Posts: 81
Until this Summer I was constantly getting 1:1 or 1.1:1 lpm.

This is on a catamaran with a waterline length of 16ft, so displacement speed is 4kn, semi is 8kn and minimum planing speed is 12kn. Which ought to be even more frugal than 1:1 in perfect conditions.
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Old 21 August 2019, 02:55   #23
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Country: Finland
Town: Helsinki
Boat name: Harmaakarhu
Make: Avon SR6
Length: 6m +
Engine: Yamaha F150
Join Date: Feb 2009
Posts: 84
Yep, should be a lot more economical than my setup.
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