51030Re: [bolger] Re: How would Mr Bolger update Cynthia J?
- Oct 8, 2006This is an example of conflicting demands. Big, deep, open cockpits are wonderful things for a crew to enjoy, but they are subject to flooding in a knockdown or from a breaking wave. Bolger has expressed concerns about what would happen if Rozinante were flooded (he thinks she would sink due to the weight of her ballast). Possible solutions to the vulnerability of large, open cockpits are: a) a large volume of enclosed, watertight cabin and/or bulkheaded and decked area behind the cockpit; or b) enclosing the cockpit in a Birdwatcher type cabin.
I wish there was a way to have all the features that I want in a boat with none of the drawbcks, but I haven't found it yet!
----- Original Message -----
Sent: Sunday, October 08, 2006 11:06 AM
Subject: [bolger] Re: How would Mr Bolger update Cynthia J?
--- In firstname.lastname@example.org, "John and Kathy Trussell"
> All of these modifications a) increase the amount of plywood
needed, b) increase the weight of the boat (degrading performance),
and c) change the concept. If you want a small, self righting boat,
maybe there are better designs than Cynthia J (see PCB's Old Shoe
and Supermouse designs, for his approaches).
all you say is true, and the increased plywood pile would nearly
complete AS19, a boat designed to serve close to the original
intention, I think, of a group day sailer with a cuddy, but with
much deck space for sprawling. However, for instance, in AS19 PCB&F
wanted to get away from people being confined to the cockpit and I
would like one that provides deep shelter. As PCB wrote about
Cynthia J it is rare to find a boat nowadays that you can sit in. He
has studied Herreshoff's Rozinante closely, and as Herreshoff
observed about the Rozinante that cockpit type tops all.
The sublime Anhinga could be got out from a slightly smaller pile of
wood than AS19 requires. She has the best cockpit. Wonderful.
However, she carries capsize and flooding concerns similar to the
unrevised Marth Jane. Doing away with the aft ventilation, and a
truly watertight hatch to the aft compartment might fix. The
ventilation as designed is very elegant, as is the truly amazing
system of apparent aft ballast COG shifting athwartships with
associated negative pitching that leads to the flooding concern as a
knock on effect.
Modification to Cynthia J might be easier, and she has that rig. The
boom on a gallows provides a great ridge pole for a cockpit tent.
Makes a nice place to sit out a sunny day under with lots of
ventilation and cooled sustenance close by. Carry the tent forward
to the mast and both cudddy hatches could be off in the rain.
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