George, I have a set of Jerry M's original drawings. He originally drew the mainsail to have a luff of 16.7 feet and foot of 7.3 feet. I just checked my dimensions. I have been making the M15 mailsails 16'10" on the luff (but using a very narrow headboard and 7'4" on the foot. That's before allowing for stretch, so they're actually about 1/2% smaller than that. Fair winds, Judy B Judy Blumhorst Hyde Sails of Northern California www.judybsails.com judy@judybsails.com cell: 925.208.1692 fax: 925.820.2327 skype: judith.blumhorst www.HydeSails.com/NorthAmerica ________________________________ From: George Iemmolo <griemmolo2@gmail.com> To: montgomery_boats@mailman.xmission.com Sent: Saturday, September 28, 2013 4:03 PM Subject: M_Boats: M15 Sail Info Monty Pals Was out sailing today in steady 14-16K winds topping out @ 20K was able to sail without a reef and maintain boat on her 15 deg. line. I am wondering if I am under canvassed. Can someone direct me to where I can find Main and Working Jib dimensions? I noticed that I still have about 24" of host left on the Main. My boom is sitting just below the mast gate held there by a stop. It appears that I could have the boom above the gate with stop preventing it from coming down. Where should the Boom normally ride on a M15? I have my Jib foot at the same height as the Boom is that correct? George Merry Helen II M15 #602 'We Can Not Control the Wind But We Can Adjust our Sails'