Bird's-eye View of Locks, Monster Freighters "Locking Up." Sault Ste. Marie, Mich,-35 Jack Knife Bridge at Left, International Bridge in Distance 'In The Land of Hiawatha" The Soo Locks show greater tonnage records than any system of locks and canals in the world. Ships pass the Sault on an average of about 100 per day in a normal season, 3000 per month and 25,000 during the eight months of navigation. The Weitzel Lock is 515 feet long and 90 feet wide; the Poe Lock 800 feet long and 100 feet wide; Davis Lock, 1,350 feet long, 80 feet wide, and has a draft over miter sills of 26ï¿½ feet; Sabin Lock is of the same dimensions. The Davis and Sabin Locks are 250 feet longer than the famous Gatun Locks at Panama.