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Old 14 February 2013, 06:31   #31
Nasher's Avatar
Country: Other
Town: Principalite d'Chaos
Boat name: The Nashers Revenge!
Make: Ocean & Bombard
Length: 6m +
Engine: Suzi DT200EFI, DT9.9
MMSI: "Mmmmm SI" she said!
Join Date: Jan 2004
Posts: 4,162
Originally Posted by ALANT View Post
looking at old posts Pete7's Pac 22 with 200hp was running 1 litre per mile
That's because @3/4 of that litre was being left as a slick on the surface behind the boat

Seriously, I don't think its a good comparison as it was an old tech engine that had been tuned from 120hp to 200hp mostly by winding up the pressure on the fuel pump.

I'd want to use something far more efficient and believe that under 1/2 l/mile is achievable at sensible speeds.

As mentioned, it may be a couple of years before I make a decision, might win the lottery in the mean time, or get to the point(again) where the boat goes up for sale to buy food for the kids.


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Old 14 February 2013, 06:37   #32
Country: UK - England
Town: Hamble
Length: 9m +
Join Date: Dec 2002
Posts: 2,317
Originally Posted by Nasher View Post
Thanks again guys.

I rekon I could do this for @£7.5K, which would be a damm sight cheaper than a newer outboard.

Plenty to ponder I think.


I'd love to see a breakdown of your costings

It is better to remain silent and be thought a fool, than to speak and remove all doubt!
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Old 14 February 2013, 07:41   #33
butty's Avatar
Country: UK - England
Town: southampton
Make: Island RIBS / custom
Length: 7m +
Engine: inboard diesel
Join Date: Jul 2003
Posts: 266
I think it would make a great project...

I have the cummins QSD 2.0 lt married to an Alpha 1 leg. I don't know what I get per mile, but I love the engine, it not that noisy, there is no delay or turbo lag, I even wake board behind it...

It is in a coastline 7m and when you look at the outboard version with the splash tray bonded on the inside of the transom there is not much loss of space....

There is also a massive amount of dry storage either side of the engine as I have a full width engine box.

If you would like to have a look or even a test spin, feel free to get in contact.

I would watch the build thread with enthusiasm.....
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Old 14 February 2013, 08:35   #34
Country: UK - England
Town: Southampton
Boat name: SMH Rib / War Shot
Make: Ribtec / Scorpion
Length: 4m +
Engine: 10hp Yam / 150hp opt
Join Date: Sep 2003
Posts: 1,903
Like this one ;-)

Coastline 7.0 - Cumins Mercruiser QSD 150 Hp - POA
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Old 14 February 2013, 09:14   #35
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willk's Avatar
Country: Ireland
Make: Redbay Boats
Length: 9m +
Engine: 370hp
Join Date: Feb 2008
Posts: 13,093
There were quite a few of them
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Old 14 February 2013, 12:47   #36
Country: UK - Wales
Town: Barmouth
Boat name: Blue Marlin
Make: Ribcraft
Length: 7m +
Engine: Yanmar 315/Bravo 2X
MMSI: 235020218
Join Date: Jun 2003
Posts: 827
Mine got through an average of 16.69 litres per hour when I was doing 30 minute 'RIB rides' - which (usually) cosisted of 15 minutes of low speed/idling, and 30 minutes of being really quite enthusiastic , typically at around 35kts.

By my maths, that would work out at just under 0.75 l/m.

And then I stopped operating commercially, and couldn't use red any more...
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Old 15 February 2013, 02:14   #37
Country: UK - Wales
Town: N Wales Chester
Boat name: Mr Smith
Make: Humber
Length: 6m +
Join Date: Feb 2009
Posts: 5,078
How many people have actually ever had their diesel tested for being red or not inside UK waters?
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Old 15 February 2013, 02:40   #38
Country: UK - England
Town: Margate / Ramsgate
Boat name: Bumbl
Make: Scorpion
Length: 8m +
Engine: Yanmar diesel
Join Date: Feb 2002
Posts: 2,837
It's all the same stuff (red) just if you are using commercially you sign a deceleration and pay less (ie no duty)

Same applies to yotties who use some of it for heating, they can declare upto 40% as not used for propulsion, therefore only pay duty on 60%.

Worth fitting an eberspacher at the same time then nasher, er??
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Old 15 February 2013, 02:49   #39
biffer's Avatar
Country: UK - England
Town: swanwick/hamble
Boat name: stormchaser
Make: custom rib
Length: 8m +
Engine: inboard/diesel
Join Date: Aug 2007
Posts: 3,848
The best thing about having a derv in your boat is you can heat your pasties on the engine, they run at 80c so it's just right

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