Channel system (shipbuilding)

The channel system is a method of ship construction where several rows of large, flanged steel plates run longitudinally within a ship's hull. The style derived its name from the "channels" between the frames. Invented by Sinclair Stuart, a surveyor for the United States Standard Registry of Shipping, it was introduced to the Great Lakes in the mid–1890s, becoming a standard feature of vessels built there thereafter.^[1]

The channel system during the construction of the freighter Yale

This practice dispensed with the common tradition of frames composed primarily of angle iron. It lent a vessel much greater strength, prevented possible damage sustained in a grounding from spreading to other areas of a hull, and increased the cargo capacity, without expending a greater quantity of materials than the previous design.^[2]