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Old 24 January 2004, 08:25   #1
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stress cracks

Can anyone tell me what causes these,can they be repaired and what they could be indicative on a new boat?
I picked up a new humber assault last monday from hull in the rain,I used a new rollercoaster type trailer and winched it on from the cradle as advised.The boat has no consoles or outboard fitted,today is my first chance since monday to look it over in the daylight and clean off the road grime.I was somewhat surprised and worried to find a series of stress cracks just under the tube on one side about a foot long.
I understand they could be caused by a sharp and hefty bang,which I havent applied but if a lightly loaded boat on a trailer can develop these,what will happen when I use it with an outboard,in a chop.
What I am worried about more is whether it indicates a problem with the lay up.
All advice welcome!
I will call humber on monday but was trying to get a better idea of what I am talking about,and what if any remedial action is neccesary.
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Old 24 January 2004, 11:01   #2
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I'm suprised to..........

be the first to respond to this very interesting and IMO worrying question.

Come on Ribnet, lets have some constructive feedback on this one !

If it were me.....regardless of the advice you get on here, I'd be back to the manufacturer seeking some advice as it does not seem right to me.

Good luck.
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Old 24 January 2004, 12:09   #3
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Stress cracks

It is possible that too big a wedge was driven in between the Hull and the Mold upon removal??? This would cause the Gel to crack in the radius of the flange. Is this where the stress crack has appeared on your boat?....... All the same, i would get straight on to them on Monday
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Old 24 January 2004, 12:29   #4
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I am sure that Humber will be more than willing to help you sort this problem out. I recieved a good deal of help to sort out a problem with my vhf, and they only fitted it and the problem was nothing to do with them.
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Old 24 January 2004, 13:42   #5
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Yes,it is just below the flange,I have some experience of fibre glass yachts as I have a sailing boat with the odd stress crack,but its 27 years old so expected,I dont know if there is any way to repair them,my real worry is if there is a problem with the laminate,and does the crack let water into the laminateI,m not too concerned about one but I dont want any others appearing,anyway,I,ll call Sue at humber on monday and email her some photos,not too keen on driving back to hull from Southampton though...............
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Old 24 January 2004, 13:48   #6
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Maybe they dropped it or smashed into it with the forklift!

Anyway, go and wind them up.
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Old 24 January 2004, 14:32   #7
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Mold mark

Last summer myself and Tim paid a visit to Redbay boats workshop, I was looking at quite a a large hull and surprised to see a spiderweb shape ( crack) or so I thought we looked at a couple of similar hulls out of the mold, all identical spidersweb designs and not a crack atall but a mold mark in exactly the same spot, nothing more than a mark repeated in the hulls cast from the same mold, but until I inspected other hulls in the shop I didnt relaize it was a mark but presumed it was a flaw or crack.
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Old 24 January 2004, 14:37   #8
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HUMBERS ARE TOUGH

Here is one crossing the Atlantic
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Old 24 January 2004, 14:52   #9
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Is that Enda's Boat?

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Old 24 January 2004, 14:55   #10
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What is a vivacious young woman such as yourself doing at home surfing on a Saturday night. Surely the night life of Poole has something to offer you
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