Bud, There is a blob of putty on my keel where it was repaired. The hole may be as large as 3/4 of an inch. The center of the blob is 16 and 1/4 inches back from where the keel meets the hull. I held my rule along the top of the keel. The center of the blob is 2 and 5/8 inches below the hull. I made this measurement from where the hull is flat, that is above the fillet between the keel and hull. The center of the blob is 6 and 7/8 inches from the bottom of the keel. HOWEVER, the bottom is really not all the way to the bottom. I took my carpenters rule, and twisted the end segment so that it was at a 90 degree angle. I held this section flat against the vertical face of the keel, and held the rest of the rule up against the curved bottom of the keel. I moved the slide out to the center of the blob. I then transferred the setting to a note pad, and measured the distance to the mark on the pad. I forgot to measure the line size. Let us know how things go. Steve R. M-15 #119 Lexington,KY --- Bud Holzschuh <schuh8@yahoo.com> wrote:

I have just acquired a 1983 Montgomery 15. Boat is in fine condition with one exception - the centerboard is not installed and there appears to be no way to do so !!!