Was that a single planked or double planked hull? There is a myth that has grown up in the wooden motor boat world over the years that the old double planked wooden motor boats were designed to leak and needed swelling every year. It is true that many of them need swelling, but that isnt how they were designed, and it’s a bit idk around at best. Old Chris crafts and other double planked hulls had a hull design life of ten to fifteen years max, after which they were to be returned to the factory for renovation. The oiled canvass later sandwiched between the two layers of planks would dry out and eventually disintegrate, leaving the wood alone to maintain a water seal. As people kept these boats longer and longer without replacing the canvass, the wood would go through cycles of swelling and drying, slowly working fasteners loose to the point where they will sink without careful swelling of the planks. This is not how they were supposed to live, and eventually as fasteners loosen further, you end up with an unsafe boat. Lots of them around. I won’t take a ride in a very old boat that requires swelling at this point. The fix for double planked boats is to either replace the canvass layer and commit to renovation every ten years, or replace with a no soak bottom using 3M 5200 between the layers, or some alternatives that have been tried. Fiberglass over wood or epoxy has also been done, but both have serious issues. Modern cold molded hulls can work well but are designed completely differently. I have a thirty year old 5200 hull on a 80 year old Chris Craft and it doesn’t leak a drop ever. I don’t know how this sailboat was designed, but if it leaked that badly, it’s obviously a sign that it relies on the kind of expansion and drying that will eventually, over years, damage the fasteners. I saw this first hand when I refastened our entire boat during renovation and found more than a third of all fasteners were cracked in half. The boat was held together by varnish. Lots of boats out there like that.