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SHIPS OF THE INLAND SEAS A. Sal BULK FREIGHTER Carrier bulk feet dan cee Speed N18 nots. |. SELF-UNLOADER Bulk freighter with self- eel equipment to discharge its 0 now in service. Average length 600 feet capacity about 20,000 tons. Crew 9 men. . TANKER Designed to carry liquids, usually oil. There are 60 on the Great Lakes, each carrying about 50,000 barrels. Most are about 450 feet long and run at little more than 10 knots speed. . OCEAN GENERAL CARGO VESSEL Identified by derricks and booms which enable them to load various package cargoes, these ships are usually 550 to 600 feet. ee 12,000 tons, crew 40, spee m = > za a B @: iS = a mn z faa] sO Sei 3 a EY is) 8. e 3 Fa a s turbine-powered, they average 600 feet, 20,000 tons, 5,000 hp, 16 knots and a crew of 35. There are 300 bulkers on the Lakes.