Figure 220.—Cross sections of log and canoe hull:

a, cross section of log, showing greatest diameter (1) below the surface (2) adzed off to form upper edges of the canoe; b, section through middle of a Tutuila canoe, 15 feet long, with inside depth in middle of 11.5 inches; the greatest width (3) corresponds to the greatest diameter of the log and is 4 inches greater than that at the upper edges (4); the inside flanges (5) are also shown.