Boat Placement in the Cradle - Expensive Lesson

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Merrill Mant

Four weeks ago on launch day I discovered a one foot long crack and two smaller cracks in the hull as the boat hung in the travelift slings. The cracks had been hidden by the forward starboard cradle pad. After a poke around by the yard we decided to abort the launch and take her back into the yard. A few days later the yard ground the hull down to determine the severity of the cracks ... they went entirely through the hull. They found that the 2 foot by one foot area had completely delaminated. I know that the boat had never been hit and I had witnessed all launches and placements of the boat into the cradle. I suspected that the boat was in the incorrect location in the cradle. I hunted through the owners manual and found no instructions. The customer service folks at Hunter told me that 60% to 70% of the weight of the boat should be resting on her keel and at most 30% to 40% on the pads. In the case of the 33.5, the fore pads and the aft support beam are to support the boat and the center pads are virually only for stability. The other important fact they passed along was that the pads should always be aligned with the bulkheads inside the boat. In my case the pads were perfectly alingned to fall between the two bulkheads in the front and in the hollow area under the aft berth.... hardly what was being recommended. The cradle that I have was supplied with the boat from Hunter. At some point, someone had put markers along the waterline that aligned with the pads and I followed those marks without ever giving it any thought. The estimates have now been completed .... since the hole is so large, the hull needs to be patched from the interior and the exterior. To get at the inside, they are required to cut the floor out of the shower / head fiberglass unit, patch the hull then rebuild the floor. We will launch 8 weeks late into an already short season. One word of caution ... verify not only the pad location but watch very carefully as the boat is placed in the cradle and how the cradle is blocked in the yard so that the keel is fully supported and that there is not too much weight on the hull pads. In no way do I hold the yard responsible as they also followed the markers. In hindsight, perhaps Hunter should indicate not only sling points but also cradle / jackstand points. Reference in the owners manual would also be helpful.
 
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Mark

yes I agree

I mean really the keel of a yacht "should" support the weight of the yacht and that is the way they should be built. However production costs and final retail price is reflected by engineering and construction. At the end of the day you get what you pay for. So yes it would be fair to say that yacht builders should give clear and precise directions for hauling.
 
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Richard Marble

You can also have too much weight on keel

Last fall I had my 27 ft Hunter hauled about 100 miles. The trucker put supports under the keel and then lowered the boat onto the supports leaving very little support on the pads. He then used hold down straps over the front and back of the boat and put a fair amount of tention on the straps. After the boat was delivered I noticed the floor panel in the boat had pushed up enough to strip the screws out of the fiberglass. These are the screws that are supposed to hold the floor panel down. On inspection I could see that the support member under the floor panel had been pushed up by the keel. The keel had flexed enough to push this support up but had not damaged the hull, just flexed it. I am currently having it fixed by a guy that has about 20 years working on fiberglass boats. He says he can fix this for about $200.00 and that he will reinforce this area. He said the guy just put too much weight on the keel. PS I trucker has agreed to pay for the fix.
 
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