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Main sheet arrangement

Nov 18, 2015
Sirius 21 Oyster Bay, NY
Hey everybody, I just put my new to me sirius 21(1978) in the water today. There was some block and tackle on the boat that I assumed was for the main sheet. Upon closer inspection, not so. So we rigged up a line through a shackle hooked to the end of the boom and then lead back to the transom mounted pulley/cam cleat. We had to sail her from the boat ramp to the marina slip (engine wouldn't start-another story) and it worked ok, but I am interested in setting up a proper system. Does anyone have any drawings or info on the best block to attach to the boom. I googled some pics but couldn't make out details. It appears the boat uses a "V" type apron before leading the sheet to the cleat. Does anyone use a simpler set up? Any info would be great. Thanks Chris
Aug 19, 2013
Sirius 22 Minneapolis
Here is the OEM setup. Click on the photos for a close up.

lake huron 2015 034.jpg aa.jpg
Lake Superior 2014 029.jpg a.jpg
Last edited:
Nov 18, 2015
Sirius 21 Oyster Bay, NY
Thanks, the pics were exactly what I was looking for. Hopefully I can get it set up for a little Christmas sailing. Thanks again Chris