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Old 03-13-2008
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Obviously you have not been reading my comments. If you go back to yacht design texts, working water craft histories and cruising books that predate the CCA era, there was a strong concensus that the CCA driven narrow beam, and long overhang designs have no place offshore. If you read CCA era design critiques, there was a real outcry against CCA type boats as being 'unwholesome' for offshore work. If you read some of the post Fastnet research and some of the pre- CE directive research on suitable offshore vessels, the short waterline lengths and long overhangs come into the crossfire for their negative impact on motion comfort, lack of stability, and poor carrying capacity.

At least amoung the current crop of offshore vessel designers there seems to be a near unanimous sense that long waterline/ short over hangs are the way to go from all perspectives; ease of handling, sea keeping, motion comfort, carrying capacity, not to mention overall performance.

Which also brings up a related issue. When you look at idealized values for such surrogate formulas as L/D, Motion Comfort Index, and Capsize Screen Formula, the numbers that we all are used to were based on CCA era short-waterline, long overhang designs.

If you look at an equal length on deck boat from the CCA era vs one from today, you'd be surprised that the overall weights of these boats are not all that different, but the waterline lengths of the newer boat is typically as much as a third longer than those of the CCA era boat. The newer boats also often have greater depth and higher ballast ratios as well, meaning lower VCG's relative to the Vert center of Buoyancy)

What this 1/3 longer waterline does is make the equal weight modern boat seem overly light (in other words, what we would consider a moderate displacement boat of today with an L/D of 170 would be the same weight and length on deck as a CCA era boat with an L/D of roughly 350 which would have been considered quite heavy)

Historically a LD of 170 would be considerd too light for offshore work, unable top carry adequate supplies, and the other formulas would suggesting less stable/ seaworthy, and prone to a less comfortable motion, when in fact the longer waterline/equal weight boat should actually be less prone to capsize, have a more comfortable motion and have greater carrying capacity.

But beyond that these CCA era almost by necessity are sailed at very high heel angles, and compared to more modern designs tend to scoop up a whole lot of water over the bow and be pooped over the stern making them miserable to sail in heavy going.

It is for that very reason that I cringe whenever I see someone suggest that boats like the Alberg's, Ariels, Bristol 32 and to a lesser extent 40, Triton, Vanguards and the like make any sense of offshore work.

Respectfully,
Jeff
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