Join Date: Feb 2000
Location: Annapolis, Md
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Re: Modern Hull forms and Motion Comfort
SoulJour; With all due respect, at least in part, this is a good example of something which I had just been talking about in the full-keel vs fin keel thread. I apologize for the cut and paste comment.
In my mind the problem with discussing this in the abstract, versus analyzing this in the specific, is that for the most part, the majority of fin keel boat which have been built have been aimed at the racing, coastal cruising and value oriented communities. These boats have purposely developed for their use which is clearly different than that of boats intended for dedicated offshore passage-making and cruising. By the same token, a much larger percentage of full keel boats built in recent years were designed with the intent of offshore use.
It is easy to say that a purpose built, offshore cruiser- no matter what its keel type, should have a more comfortable motion, more carrying capacity, and a more seaworthy hull form no matter what its size or displacement than would be expected on a dedicated race boat, racer cruiser, coastal cruiser, or even a boat designed to make occasional offshore passages.
Where these debates go off the rails is that comparasons are often made between purpose built offshore cruisers versus purpose built race boats, racer-cruisers, value oriented family cruisers and coastal cruisers and so on, when each may be well suited and optimized for their secific intended use and so do not represent a fair example for comparason on the issue being debated.
I think that your comment about lead bullet hanging precariosuly 8 feet below the rather flat hull falls in that category. I think that the current trend in race boats and coastal cruisers has moved in a direction which is far less suited to offshore use than I personally would consider ideal. At the time when I wrote the original post of this thread, performance hull forms were more moderate and moved away from high form stability, flat bottomed model to which you refer.
At this point the pendulum has swung wildly in the other direction, and so if one were talking about the current trend in racers, and coastal cruisers you would be very right about their ill-suited nature to distance offshore cruising, as was the case with many of the racer, and coastal cruiser type forms from earlier eras mentioned above.
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Curmudgeon at Large- and rhinestone in the rough, sailing my Farr 11.6 on the Chesapeake Bay