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Old 16 February 2006, 17:58   #31
Country: Ireland
Town: Dublin
Boat name: Platypus
Make: Parker 630
Length: 6m +
Engine: 1.7 Mercruiser DTI
Join Date: Aug 2004
Posts: 130
I think I do slightly better? Laser 2 prop 6.3m

Originally Posted by Arlon
Here's a full load gallon/liter/hr chart for the 1.7. Seems to be fairly accurate from what I have been able to judge just from gps mileage and refills (no navman).

Andre may well comment as hes a lot more experiece of mercruisers in ribs.
I d be ibterested in the group


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Old 17 February 2006, 07:20   #32
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Country: UK - England
Town: West Sussex
Boat name: Grey Mist
Make: Parker 800 Baltic
Length: 8m +
Engine: 2xMercury Diesel 170
Join Date: Oct 2002
Posts: 3,565
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Originally Posted by IanE
Andre may well comment as hes a lot more experiece of mercruisers in ribs.
I d be ibterested in the group

Ian , I would say that the WOT figures are quite high for a 6.3 mtr rib like ours

This is now my third Parker 630 diesel and still have my fuel log of the first one . Did not run a fuel log on Seahawk 2 and have not started one yet on Seahawk 3 probably cos not been to Cowes with it yet

looking at the fuel log for Seahawk I note

20/07/2003 Littlehampton 121.6h on the clock, full tank
20/07/2003 Cowes 125.5 on the clock, 22.40 ltr of fuel taken
02/08/2003 Littlehampton, 128.4 on the clock, 31 ltr of fuel taken
02/08/2003 Cowes, 131.3 on the clock, 22.3 ltr of fuel taken
03/08/2003 Littlehampton, 134.6 on the clock, 45.3 ltrs of fuel taken

Don't remember whether I filled up as soon as I got into Cowes of after lunch but guess after cos it takes on average 1h 30 min to Cowes and on a good day 1 h 10 min in my rib. The sea state would have been fair

The average speed would hv been say 26 knots , the max speed on that particular rib was 32knots at 4400 RPM, 21: LASER II prop, we only use them

I would say a 6.3 mtr rib should not use more then 10/15 ltrs max per hour

My current Parker 630 known as Seahawk 3 is faster then my previous ones and I am yet to venture out to Cowes and will be keen to compare fuel consumption.

The Mercruiser 1.7 TDI is a superb engine for a 6-6.5 mtr rib you cannot go wrong

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Old 18 February 2006, 10:13   #33
Country: USA
Town: Ventura, California
Boat name: Maverick
Make: Ribcraft Mitigator
Length: 7m +
Engine: 2 150 hp Johnsons
Join Date: Feb 2006
Posts: 73
Hi Smokie,

We just recently purchased a Ribcraft 7.8M to use as a rescue boat for our Vessel Assist operation in the Santa Barbara Channel and are extremely pleased with the boat. This one has outboards but you can power them however you like. We are especially pleased with the ride and handling in both calm waters and heavy seas.

The other nice thing about Ribcraft is that you can set them up however you want as they will build to your spec. The other thing we are impressed with is the Ullman seat, especially for the long trips. It's expensive but well worth it.

We are doing demo/adventure rides if you are ever in the area and would like to go for a spin. Check it out on our website.

Good luck.

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