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Old 06 April 2004, 15:52   #11
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Yo!! on petrol v. Diesel Simon.
I have always maintained the winning argument for diesel is availability, not price/tax or anything else.
It's fine for the Ramsey Islands guys where typically they operate out of a fixed base, but in your case finding/filling with petrol at say Duarnanez, Carteret, Deaville etc.??
Even in the Scilly Islands it's a pain.
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Old 07 April 2004, 01:59   #12
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jets v's stern drives

I run a 6.0m diesel jet and have no problems, even in big seas. yes she may lose drive occaisionally, very occaisionally. But she is very controllable in rough weather enables you to put the boat where you want. If you do go down the jet route, I would go Hamilton and ensure you can back wash the jet in case of blockage, ie carrier bags. I feel that even with the threatened disappeareance of red diesel I would much rather have a simple diesel lump chugging away behind me than a high tech outboard, thats my opinion...

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Old 07 April 2004, 09:04   #13
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If we go the jet route we will go for hamilton jets. Is there any advantage to a 3 jet set up which will put the middle jet lower down?

It has to be a deisel! I have spent too long carrying petrol in taxis in Audiernne to fill up 80 gallon tanks on a petrol rib.

I have been offered a trial on both stern and jet before we make a decision by the company we are talking to so I will post my experience as and when, but a trial is obviously limited and so I appreciate all feed back.

Thanks
Simon
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Old 07 April 2004, 12:47   #14
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The problem happens in big seas and in fairness the navy only operate their pacifics as support craft and not ocean going craft.The problem with the jet is it does not like going sideways once it has broached on a big wave and has a habit of capsizing (or nearly) which is what happened a couple of years ago on an Ocean Dynamics boat in Wales. Not to mention an 11 metre off of the Mull of Kintyre and Bears boat across the Atlantic etc etc. But then again if someone would like to correct me?

Alan P
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Old 08 April 2004, 03:54   #15
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Thanks Alan
That's the kind of thing I was looking for. The extra maintainace of sterns doesn't seem as bad compared to flipping it.
The boat will have a full cabin specifically so it can be used in all weather conditions. Any similar size Ribs (11M) anyone knows of and the set up/make/power of stern drives would helpful. We want to have a top speed of 40-45knots and cruise at 30 and a range of 350 miles minimum and ideally 450?

Simon
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Old 08 April 2004, 04:47   #16
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Quote:
Originally Posted by Alan Priddy
The problem happens in big seas and in fairness the navy only operate their pacifics as support craft and not ocean going craft.
Alan P
Alan
Just to pick you up on a point.

The Pacific 22 is designed to ‘operate in the open sea at any time of the year….. remaining on station in sea state 6 to 7’ so I think it is disingenuous to say that they are not ocean going.

I come back to my original point, the Navy have an enormous budget to develop these boats and would not choose jets without justification, so for you to say that jets are no good in a big sea seems to contradict the Navy's findings. I could accept that an 11m boat behaves differently to a 6.5m boat or that hull shape or weight has an effect but to say that jets loose power and broach is dismissive of their abilities. I am not trying to pick a fight I just don’t understand and would like to know more.

Des
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Old 08 April 2004, 05:01   #17
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By the way, the US coast Guard have just taken on a P32 mark 2 with jet and find that operating in the surf or tight wave frequency they can turn in the trough between waves, try that with a leg!
Des
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Old 08 April 2004, 07:22   #18
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... try that with a leg!
Des
Easy. Put on a good quantity of lock and open the throttle firmly. Be ready to back off or you may not be able to unwind it!
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Old 08 April 2004, 07:27   #19
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Easier with a jet
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Old 08 April 2004, 07:30   #20
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