Hull Damage Question

[Paul D.]

Recently, I looked at an old Typhoon. It had an indentation in the hull below the waterline just aft admidships. The indent was smoooth and about a foot in length near where the trailer pad comes in contact. It is almost like the hull was heated up and melted into that shape. My question is, what would cause this type of hull deflection, is it a serious structural issue, and would filling be the best way to fix it? There did not seem to be any crazing, pitting or cracks in the gelcoat or inside the hull in the area. Any thoughts? Thanks, Paul



nyeme001@tc.umn.edu

[Dana]

This problem is not unique to the Ty. It can happen on any fairly heavy full keel boat where the bottom of the keel was not supported as it it was blocked by the jack stands. I have seen the same thing on come CD25s. Most of the boats wieght must be supported thru the bottom of the keel. If the majority of the weight is held by the stands, it will permanently deform the hull at the stand location. The hull thickness was never designed for holding the weight of the boat in such a localized area. It is also important that the boat is resting evenly on all stands. Side of the support pads also has an effect on the amount of deformation. Larger is better. About a foot square catching as much flat boat surface possible.

Dana
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Recently, I looked at an old Typhoon. It had an indentation in the hull below the waterline just aft admidships. The indent was smoooth and about a foot in length near where the trailer pad comes in contact. It is almost like the hull was heated up and melted into that shape. My question is, what would cause this type of hull deflection, is it a serious structural issue, and would filling be the best way to fix it? There did not seem to be any crazing, pitting or cracks in the gelcoat or inside the hull in the area. Any thoughts? Thanks, Paul



darenius@aol.com

[john churchill]

Recently, I looked at an old Typhoon. It had an indentation in the hull below the waterline just aft admidships. The indent was smoooth and about a foot in length near where the trailer pad comes in contact. It is almost like the hull was heated up and melted into that shape. My question is, what would cause this type of hull deflection, is it a serious structural issue, and would filling be the best way to fix it? There did not seem to be any crazing, pitting or cracks in the gelcoat or inside the hull in the area. Any thoughts? Thanks, Paul

i had a snipe with the same problem, rainwater in the boat while it sat on the trailer being the culprit. i didnt like it much but i never saw any particular problem either in performance or structurally as a result. i would ask for a drastic price cut for such a defect however as it will probably affect resale.