Apologies in advance for not figuring this out via forum searching...but: I have 6 PDF files regarding Masts, Rigging, and Sails ascribed to...
Free-standing Cypress-epoxy rigs with half-wishbones for the Prema Dinghies by Wooden Boathouse.
Wingmast design for the GT80 sloop being built in Holland
Radius chine, wing sail, unstayed masts, vinylester, balsa, hard chine, full floatation, buoyancy, amateur construction, home built, vacuum...