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Old 20 May 2002, 17:56   #1
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Cut transom

Hi,

I've just bought a Delta 5 Dash 5, and had a Yamaha 100 Horse longshaft engine fitted. The transom height had to be cut when the engine was fitted. The RIB is being used for diving, and I'm having a problem with pooping, due to the weight of the dive kit. Does anyone have any ideas how best to stop the water coming over the top of the transom ?

Thanks,
Steve
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Old 21 May 2002, 07:05   #2
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I have seen a yacht club rescue RIB transom crudely built up with timber to prevent this. I guess you could build up the transom either side of the engine. (Mine has a sort of "notch" where the engine is fitted and rises up to where the tubes are.)

I am guessing the "pooping" effect is from waves whilst stationary & diving? You are not getting swamped by your own wash are you? If so the don't slow down so suddenly !

Apart from that, fit the biggest electric bilge pump you can to clear the water as fast as possible!

Cheers,
Alan
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Old 21 May 2002, 13:09   #3
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Fit an angled skirt

to rear of transom which should help protect you from overtaking wash / waves when stationery

might be able to post pic if needed as my last rib had one of these skirts fitted
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Old 21 May 2002, 13:32   #4
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Yes, the pooping is while stationary or getting divers in and out of the boat.

I'd be interested to see a photo of the angled skirt if possible.

Thanks,

Steve
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Old 21 May 2002, 17:43   #5
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Err, I would be interested in the solution to this as my 6.5 ribtec also suffers from the same problem. What I have noticed is that any rib witha deep v hull extending all the way to the stern obviously has the engine mounted just that much lower and therefore liable to pooping. My 5.95 Osprey had a planning pad which raised the very last couple of feet of hull about 5 inches and therefore the engine was that much higher out of the water allowing a higher transom. Temporary measures include fitting a rule elec pump to the stern. Its 1100 gals per hour and very quick at draining the stern. Second mod will be to fit two pieces of trube material to either side of the engine to reduce the gap in the cut out to the minimum. A quick check at the weekend showed that the engine shouldn't foul them. However the gap under the engine sadle has to stay if the engine is to be tilted for trailing. Anyone else solved the problem and would you like to post a pic ?
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Old 22 May 2002, 13:19   #6
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skirt

you can just see the skirt fitted either side of engine, no reason this couldnt be fitted at more of an angle to give even better protection

it was very effective against wash catching up and waves when stationery

problably never had the problem as bad as you describe though
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Old 22 May 2002, 14:51   #7
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Thanks for the photo.

I'll try something similar, and see how I get on.

Steve
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