Hi, I am considering buying a 20 year old 45ft cruising cat. The main turnoff is the sailplan -- it has a lame small furling main for its size and weight.
The plan is to sail it up the (US) West Coast in Spring/Summer 2011, then Transpac to SE Asia, then on to Europe around the Cape of Good Hope (or Cape Horn if feeling brave).
If you're in SE Asia, going to Europe via Cape of Good Hope makes a lot more sense than backtracking to go via Cape Horn.
Question 1: How hard/costly is it to replace the main with a proper fully battened square-toppish one? Can use the same mast?
Can't really price the sail for you, since it depends on what material you're getting it made out of, as well as what options you're putting on the sail—number of battens, number of reef points, telltales, stackpack, etc.
Yes, but adding roach to the mainsail by adding battens will shift the center of effort aft, and likely lead to more weatherhelm.
Question 2: What is the approximate performance hit from the furling main, compared to a properly shaped sail? Are there polar plots for the boats >35ft with furling vs battened sails?
Can't really say. Polar plots are pretty boat specific...so you probably won't find one that is applicable to your situation.
I am a newb here, so please feel free to trample on my feelings like others have done troughout my life.
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You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
her going when she oughta fall down, tells you she's hurting 'fore she keens. Makes her a home.
—Cpt. Mal Reynolds, Serenity (edited)
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