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Old 24 June 2003, 10:00   #1
DJL
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Advice: Structural Problems?

My RIB has developed a crack where the transom intersects the deck. The crack runs along almost the entire width of the transom. Furthermore, when pressure builds in the hull cavity due to temperature change, air is forced out through the crack; seen as bubbles when there is water in the boat. Conversely Iím sure water is seeping into the hull cavity through the crack.

The RIB is now 1 month out of warranty but I have sent a letter to the manufactures explaining the problem.

The question is how serious a problem is this likely to be?

All comments, opinions greatly appreciated.

Daniel
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Old 24 June 2003, 10:02   #2
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Slightly useless picture of the crack.
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Old 24 June 2003, 10:41   #3
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Crack

Daniel

Your probably just find that its a Gel coat crack and nothing serious at all. All Ribs show stress marks eventually and most can be easily filled and polished out. Check with the manufacturer as well though.

Julian
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Old 24 June 2003, 10:51   #4
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Serious!

Obvious answer (so I may well be wrong then) is that the transom is coming away from the deck. Considering the forces upon a transom this is not unheard of in RIBS. However in a relatively new boat it is a cause for concern. You are correct that water will be seeping into the crack which in the fullness of time will rot away any wood in the deck construction. (e.g. if you deck is marine ply covered with gel as per a large number of RIBs.)

I had a similar problem in my Deep Sea 21 a few years ago. In this case the crack and flexing was from the "knees" that led back to the transom and was resolved by fabricating dirty great stainless brackets and bolting through the knees and transom. Not familiar with your type of RIB but cant see any knees on the pic so mebbe a different construction. You might get away with putting some hefty stainless L brackets between deck and transom and filling the crack. But not on a newish boat surely?

You need a) to tackle the manufacturer / dealer. (Who will probably point out something helpful along the lines of "well if you will go an use it in the sea what do you expect!") and b) assuming you get no joy get some expert opinion on cause and rectification. Suggest you then create merry hell with dealer/mfr, threaten sale of goods act, small claims etc etc.

Good luck!
Alan
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Old 24 June 2003, 11:19   #5
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From your description of the bubbles it seems unlikely to be just the gel coat cracking, and may well be more serious.

I hope that the manufacturer doesn't try to duck any responsibility because the boat is over a year old. This sort of thing shouldn't happen in a boat of any age.

Do keep us posted.

Cheers
John
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Old 24 June 2003, 11:27   #6
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Re: Advice: Structural Problems?

Quote:
Originally posted by DJL
The question is how serious a problem is this likely to be?
Without close examination by an expert all is speculation.
Most likely as others suggested is a gel coat crack but also you mentioned bubbles so it may be more serious than that.
However, the question is how long has been there?? If it has been for a long time you might find (this is the worst case) that the ply under the jell coat is rotten or damaged and may need repairing.
Is all very easy to be repaired by an expert ONLY!!
But you should take it up with the manufacturers before you do anything else.
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Old 24 June 2003, 13:07   #7
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Thanks guys,

I personally think itís more serious than cracking gel coat. If it is more serious Iím not sure what they would do about it. I donít cherish the though of the deck/transom being cut up and repaired which is really the only option apart from a new hull. I bought a new boat to stay away from these kinds of problems and their repairs.

Hopefully I should get a reply from the manufacturer in the next few days.

Cheers
Daniel
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Old 24 June 2003, 13:19   #8
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Daniel, ignore Manos he is talking twaddle again. The deck is unlikely to be rotted on a one year old boat. GRP is very suitable for use by amateurs, for repairs. The bubbles are from air escaping. Lots of ribs do this from the fastenings particularly when you put a boat hot from the sun into cold water.

Agree with JK though ask the manufacture to have a look at your boat. If you want a pic of Stainless Steel transom supports just shout and I will post one of my Ribtec that had them fitted from new.

By the way what make is your rib ?

Pete
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Old 24 June 2003, 13:51   #9
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Daniel - sorry to hear about your problem. Can you let us know what Laurence Lock at barnet comes back with? When we had a problem with our tornado he was helpful, although that was when the boat was new. Hopefully they wont have to send it all the way back to Hull for fixing.

Ricky
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Old 24 June 2003, 13:54   #10
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Its great on here post a picture and everybody knows what the answers are ? withought the need for a thorough inspection.

Anybody now the lottery numbers for next wk?
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