All the pictures posted above are fiberglass Doughdish models. They were all built by Eddy & Duff in Mattapoisett, but are now built by Ballentine Boat Works. They built the molds in 1972, using several different wooden Herreshoff-built boats. The hulls are foam-core fiberglass, with teak trim and wooden spars.
Along with the cross-section of the transom, one can easily discern a CCSB boat from a Doughdish by the CCSB's lack of a molded sheer-strake. Most CCSB boats also use copper around the mast where the gaff-jaws wear, while Doughdish, LLC use a layer of fiberglass cloth and resin.
One can easily discern a Doughdish from a wood 12 by the fact that the sheer-strake ends just short of the stem on a Doughdish, while the varnished strake meets the varnished stem on a wood boat. This shows the detail on a wood boat:

And on our fiberglass Doughdish:

Here is a CCSB boat:

Notice that there is only a narrow rail where the molded sheer-strake should be, and that the coamings are shorter from the deck-line. They also feature a shallower cockpit sole than either the wood or Doughdish models.
Jon
