Re: [Amel Yacht Owners] New Bowthruster unit - cost and in-stock?
Colin,toggle quoted messageShow quoted text
With respect to just sealing the hole in a secure fashion with easily available materials. I would probably remove the rest of the damaged shaft and use two pcs. of 3/4” plywood (1” if you can find it or laminate as needed), one pc. inside and one outside with a good sized bolt passing through the center of both pcs. If you have some large washers it will help spread out the load needed to compress a gasket (neoprene wet suit type rubber should work) or you might be able to use caulking. I would prefer the gasket since additional compression could be applied by tightening the bolt if needed. I would put some caulking around the bolt shaft where it passes through the pc. of plywood on the outside of the hull but the wood will swell some and seal this part pretty well if the hole is a snug fit for the bolt. This will of course leave the hull cutout exposed which will cause some drag but at least you could be sure that there would not be any leakage. You should be able to install this temporary seal with the boat still in the water and it could be removed without any major cleanup to reinstall the bow thruster.
Best of luck,