Home |
Search |
Today's Posts |
#7
posted to rec.boats.cruising
|
|||
|
|||
shortening the draft on a long fin keel...
Bill Kearney wrote:
But something that will affect how the boat actually SAILS when it's navigating out of the shallows is not just a simple mechanical task. As others have suggested, it's worth seeking out an actual naval architect and/or someone that's actually DONE THIS to THAT MODEL boat. As a naval architect, I would say just go ahead and do it. When you look at the incredible variety of keel sizes and shapes, you'll realize that it is actually hard to come up with something that flat out won't work. If you were racing and obsessing about gaining or losing an eighth of a knot in identical conditions, it would be one thing. The chance that you won't like the way the boat sails if you do a modification like this half way intelligently is finite, but small. The Sponberg solution linked in the other post is elegant. If the OP's husband did all the other stuff and can avoid poisoning or burning himself with the lead, he should be able to do this successfully with not much more guidance than that and some volume calculations he should be able to manage with a quick look at a geometry or naval architect text book. If he just cut the keel off and carried more gear and stores or put the weight in the bilge, the boat would not be as powerful or fast to windward but quite possibly not by an amount that he would notice without careful comparison. There have been many boats offered in two versions with keel configurations that vary by this amount. I wouldn't recommend this as the course to take but just to point out that this is hardly as critical an issue as some responders are maintainng. Still, it's a big, messy, and dangerous job. I'd focus on that instead of the results. -- Roger Long |
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Forum | |||
what type of keel bolt should you in wood boat and iron keel | Boat Building | |||
keel bolts | Boat Building | |||
HAM and SSB Frequencies | Cruising | |||
San Juan 21 swing keel problem | Boat Building | |||
C&C Corvette Floor and Keel Questions | Boat Building |