Gerrish canoes appear to vary, one from the other, as though the builder was continually refining his product. Typical of his earlier canoes, the rails extend beyond the stems and are wrapped with cane to simulate the spruce-root of a bark canoe. Likewise, seats and/or thwarts may be mortised into the rails, as is typical of a native-built birch bark canoe. Seat frames and reed-weaving are distinctive and seen on early as well as post-1900 Gerrish canoes, which tend to have a more "modern" appearance. An open gunwale Gerrish may include the addition of a decorative half-round on top of the inwale and outwale. Wood species used on decks, thwarts, and seat frames may be American chestnut.
Deck: Commonly a narrow heart-shape, but seen on canoes assumed to be later is a concave curve with or without coaming.
Serial Number-- Some Gerrish canoes have serial numbers and some do not. No records are known to exist. Those that do have serial numbers are either marked by writing on the hull or by stamping numbers on a deck.
The Gerrish nailing pattern of the canoe tacks is different form almost every other manufacturer. The most common pattern for the tacks was to alternated the tacks, (right,left, right left, etc). The Gerrish nailing pattern was to have the tacks in a diagonal row that would be repeated on each plank.
The hardwood stem is splayed similar to the Morris stems however the bottom of the stem is 1.125" to 1.25" wide tapered to .875". The taper starts at the first full rib and extends to the end of the stem at the fourth or fifth full rib.
The bottom edge of the inside edge of the inside rails have a 3/16" wide, 45 degree bevel.
The bottom of the ends of the thwarts are tapered to one half of the thickness of the full thwart. The taper extends from the end of the thwart for about three inches to the full thickness of the thwart. the ends of most seats are not tapered but in some cases they are tapered similar to the thwarts.
Most double ended canoes would have hand thwarts just behind both decks.