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Old 26-03-2013, 04:38   #1
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Litres per hour approx

I have just purchased a 2003 hunter 44DS which I will fly to soon to sail home approx 600nm. I am planning my journey allowing an estimate of 6nm/hour but there is a section of nearly 40nm were I will probably have to motor. Can any one give me an estimate of how much diesel fuel per hour that a Yanmar 56hp motor will use. Thank you
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Old 26-03-2013, 04:45   #2
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Re: Litres per hour approx

3-4l/per hour depending on conditions
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Old 26-03-2013, 05:45   #3
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Re: Litres per hour approx

drop down to 5kn and youll be closer to 2-3 l per hour, makes a huge difference to your range when motoring long distance
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Old 26-03-2013, 06:47   #4
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Thumbs up Re: Litres per hour approx

Thanks for the info guys
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Old 26-03-2013, 07:47   #5
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Re: Litres per hour approx

On the 264 litre fuel tank of the DS44 you should be able to just make the whole 640nms at 5 kts.

The 4JH3e is quite a fuel miser.
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Old 26-03-2013, 08:54   #6
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Re: Litres per hour approx

yeah if the bottom is very clean and the sea very flat and the boat very empty, dirty bottom, medium seas and full boat, prob about 500nm with a small reserve, we are about 13 metric ton laden .

13 ton boat with 280 l of fuel and 4jh3e= 500nm doing 5kn,6kn=400nm,4kn=almost a 1000nm with slightly dirty hull, a very clean hull and glassy sea add 30%, rough seas and headwind subtract 40%.

We have used a tank (280l) going less than 250nm motoring into f7-f8 and 5-7m seas at 4-6kn but we have also gotten 800+nm motoring slowly in calm conditions.

So factor 1NM per litre in the worst conditions and 4NM per litre in the best conditions
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Old 26-03-2013, 16:12   #7
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Re: Litres per hour approx

FWIW, planning a time constrained voyage on being able to maintain a specific and fairly high speed is problematical IMO.

From your location in the Lake, I assume that the delivery is either from Qld southward or possibly Tassie or Victoria northward. Both of those routes are subject to periods of adverse winds/seas, and keeping up a 6 knot average under those conditions is pretty difficult. Yes, your boat can go that fast under most conditions, but with a new to you boat (unknown possible flaws) I suspect that it may be harder than you think.

You might tell us just what route you are going to use... might be able to offer useful suggestions.

Cheers,

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Old 26-03-2013, 17:17   #8
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Re: Litres per hour approx

Hi Jim, I am going from Bundaberg, thru sandy straights, Mooloolaba, Morton Bay, that's as far as I have planned so far then thru to lake Macquarie. Planning on just day sailing stopping each night. Any advise much appreciated Cheers
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Old 26-03-2013, 17:25   #9
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Re: Litres per hour approx

my perkins 4-108 in my formosa 41, at 28000 pounds displacement , runs using 3 litres per hour, with a dirty bottom, that is 3 kts per hour, so 3 litres every hour makes 3 kts i am able to go on 3 litres, or 3/4 gallon, as 1.06 liters to quart or qt to litre is damnearsame.


i know there is something sneaky in this math, but i didnt find it yet....
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