Kennebec also built a 17' Kennebec model canoe with that serial number as well. It was a type a with spruce gunwales. It is not clear from the ledger whether it had closed gunwales, though it was built and shipped in 1917, and other canoes on that page are listed as having closed gunwales. This canoe does not have a destination listed.
Perhaps posting a photo will help sort out the builder.