Old enough to know better
Join Date: Dec 2006
Location: Beacon, NY
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Re: Irwin 42 CC: Where's the holding tank?
Well not till 1977 was it required to have a holding tank, but I would assume that by 76 all were being built with one as there was a fair amount of warning that the requirement was coming, and retro fitting was requried. But I think most of the Irwin 42's were built for the charter trade and if so likely was not a requirement in the islands. If you know she was a charter boat in the islands it likely does not have any unless they were added by a previous owner. But it should not be hard to find out, just follow the hoses leading from the toilet (and if they are less than a couple of years old just replace the hoses as that is where most stink issues come from). If they lead straight to a thru-hull then you don't have any and you will want to add one or two, or consider a composting head. The other option may be some sort of treatment system like an ElecroSan or chemical treatment before going overboard. I don't think they suffice in some areas anymore, I know the one on my boat was disconnected.
1976 C&C 33
Project boat, lots of work to be done!