Hull design?

[jze1212]

Hey everyone.. I recently gutted my boat and removed the old saturated foam and such, replaced the deck, etc.. I was not really thinking and I did all of this while the boat is still on the trailer so once I ripped the foam and support out the boat sort of "sunk" a little on the trailer.. So the hull seems to have taken a slightly different shape.. What should I expect once I dump her in the water? It is not significant, but it is therre..

 

[JasonJ]

Re: Hull design?

It depends on what deformation occured, where it occured, and how bad it is. I am surprised any deformaiton occured at all. Usually what happens is there is already deformation due to a lack of structure, and when you gut the boat the hull gets light enough where the deformation comes out of the hull. I guess I can assume you still had a lot of weight in the boat when you did your rebuild or the hull itself is thin. If the deformation is slight, you may find no problem at all.

 

[jze1212]

Re: Hull design?

Yeah, it was very heavy with the water and foam in there from the get-go, so it may have been that way.. I still had the motor on it while I gutted it too,, And I did notice the glass on the bottom of the hull was not as think as one might hope for!! THe fact the all that weight was resting on 2 different points in the rear as upposed to being spread out.. We'll find out soon enough!! Thanks!

 

[Terry Olson]

Re: Hull design?

I bet the hull was already deformed from the weight of the water-logged foam, or even more likely sitting on the trailer full of rain water as most boats do sooner or later. The foam adds very little if any strength to the outer hull so it's removal shouldn't have weakened it. The removal of the floor could allow the hull to sag out of shape slightly I supppose, but I doubt it. This might be a problem if you were building a high-end racing boat where every bit of drag was a problem but I bet you won't even notice it - especially since it was probably already there.

 

[JasonJ]

Re: Hull design?

If you had not had the motor on, or any other weight, you could have left the hull sit for a few weeks, and the hull would have returned to its original shape. My hull had all sorts of deformation on the bottom, and because I had gutted to a bare shell and it sat for several weeks, all the deformation was gone when I finally was able to start glassing in structure.

 

[garrett61]

Re: Hull design?

Wow great post and information on warped hulls. <br />This should be bookmarked i was looking for these types of answers last year..<br />Same with surveying your own boat... enough to be able to buy a useable hull<br />I did notice that the hull took a slightly different shape while it was gutted and i was waiting for the ply to prime out.. i thought it was due to the 90 degree weather and the engine being off.

 

[jze1212]

Re: Hull design?

No high end racing here!!! I also wonder if this will cause "porpoising" (spellcheck..) because it is indented toward the rear.. We'll find out in a few weeks!!!! She is almost ready for the water.. Thanks for the help.