Oldie But Goodie O'Day Mariner
Ron, My boat's sail number is 720 so your boat and mine are of about the same vintage. The cuddy's cover was canvas which clipped to the inside of the arched cuddy roof and to the wooden bulkhead that separates the cockpit from the cabin. There was a zippered "door" that could be used to close off the two areas. I still have mine but it no longer fits (shrunk with age, just like us). I was thinking of closing the opening with 1/8 to 1/4 inch thick plywood but the wife vetoed the idea. If you don't already have a pattern of the wooden part of the rudder, give me a shout and I can send you a tracing of mine. Since my boat was used, many of the internal parts may have been replaced by a previous owner. The sink was missing so I built a counter top and use that space for the butane stove and junk storage. I removed the head and had the hull opening sealed. In view of the no raw sewage overboard rule common today, it didn't make much sense to fix the head and leave it in, especially since it is illegal to use it in any of the waters that I intended to sail. In place of the head, we have a porta-pottie. It works, but not the most convenient to use because of the lack of headroom. Incidently, if you trailer your boat to lakes located at higher elevations than where you started, be sure that the first thing you do before using the porta-pottie is to cycle the dump valve to let out the low altitude higher pressure air. Stuart Marine has quite an assortment of parts for the O'Day Mariner but, as all things marine, they are not inexpensive. Hope this helps. Aloha, win
