Marty, this subject came up some years ago on the original site. It was just after we bought the MOOSE. So for the heck of it, I called the factory and Mark Toland happened to be there. He said they had initially wanted to use the name 'Sea Dory' but that the name was already somehow in use. So they opted for 'C-Dory' instead. So it either stands for 'Sea' or nothing. Take your pick. And actually I posted this information on the original site just a day or so before its demise, so I am hereby again resurrecting it from antiquity.
Al