Howie - very nice canoe in a beautiful color! Epifanes makes some very nice colors, some of them being very unusual relative to those of other paint manufacturers.
Back to the drift, in my experience and from memory of many canoes and canoe catalogs, it seems (please correct this if wrong) that during the heyday of the big Maine builders including Old Town, Carleton, Kennebec and Morris, there were three thwarts in 17' and 18' canoes and even in 20' models. There were two thwarts in 16' models, and one in 15' canoes. For Old Town, this is true for:
- HW
- Otca
- Charles River
- Ideal
- Guide
Other models:
- Yankee: built in 16' only, so only two thwarts (see Howie's lovely canoe above).
- 50-pounder: only 15' and shorter, and at most only one thwart.
- Early Molitor (18' and I think rarely 17'): 3 thwarts.
- Late Molitor (60s and forward): no thwarts.
- Canoes built without seats had additional thwarts installed.
- Custom canoes could be built most any way a customer desired.
Other builders may have done things differently. For example, Willits canoes were 17' and the standard was two thwarts (no center thwart) and two seats, alterable on custom order. At least some of the Charles River-area builders (Waltham, Robertson, etc.) used only two thwarts in longer (17' and 18') canoes with long decks or short decks and seats. I think Racine Boat Co. built most canoes, even in 17' and maybe longer, with only two thwarts. In short, canoe models, especially at 16', with only two thwarts are very common. Some canoe models in longer lengths were built with only two thwarts - no center thwart - as well.