Hi there, since my last post on here, I have now finished the hull of my Thames Barge but,,,,, since doing my first flotation test, a problem has struck from the depths of my bath. I've obviously sanded the hull too much, resulting in cracks along the planking. She was watertight and was only sealed with a few coats of spray paint, no varnish,etc.. Will a polyurethane varnish seal her sufficiently?
