SailboatData states the listed SA for this vessel at 367 sq. ft.
Sam L. Morse's website lists "total sail area" as 637 sq. ft.http://www.samlmorse.com/?a=bcc_specification
Cape George Cutter's website (currently building the BCC) report a "working sail area" of 673 sq. ft!http://www.capegeorgecutters.com/BCC28/index.html
Notice anything? Each of these figures features a different arrangement of the same numbers! Regardless, I believe your "listed SA" figure to be much too low. All agree the rig on this stout little ship is very strong, and your SA yields a paltry SA/D of 10.15, a pretty unreasonable number for anything except a trawler-type motorsailer.
Of course, I understand this is different from "calculated" SA, but I haven't found any precise rig dimension info to add to this listing.
Lazy Jacques in Vancouver, BC