Andrei- The masts on all the std rig 17's I made were either 21'-2 1/2" or 21-4". I switched in the early 80's to 21'4" because my friend Ron Holder of Vagabond came out with a fractional rigged 17 and we compromised on the length so we could buy masts together, in 3,000 lb quantities (big price break; we paid around 35. each, incl anodizing!). hope this helps. ________________________________ From: Andrei Caldararu via montgomery_boats <montgomery_boats@mailman.xmission.com> Sent: Friday, September 10, 2021 11:29 AM To: montgomery_boats@mailman.xmission.com <montgomery_boats@mailman.xmission.com> Cc: Andrei Caldararu <andreicaldararu@yahoo.com> Subject: M_Boats: Strange mast size? Hello fellow Monty owners, I am the owner of "Seaweed", a 1982 M-17, galley style, serial number MMP173490482. I've owned it since 2008 and have been very happy with it. It has now come time for me to order new sails for it; the old ones are almost 40 years old and show it. I talked to Harry at EP Sails, and he told me that based on his information the luff of the main could be either 19'4" = 232" (for the standard rig) or 20'9" (for the tall rig). However, when I went and measured my old main, the luff came to 222.5", which is about 10" shorter than even the standard rig. I am hoping that maybe someone remembers whether a number of M-17's in that time period were made with shorter masts, and what the sizes of the sails for this shorter version was. I am planning on ordering a main and a standard jib -- my old genoa is in good shape, and I don't use it much on Lake Michigan. Thanks for all suggestions! Best,Andrei.