Aristotle Onassis of his fleet, while having trouble managing their own fleets, which operated under US flags and thus at high cost. The high profitability of the Onassis fleet has been attributed in large part to his disregard for standards that normally govern international shipping. For example, after his Liberian registered tanker SS Arrow ran aground and spilled oil into Chedabucto Bay in 1970, still the most significant oil spill off Canada’s East Coast (about 25% of the amount spilled by the Exxon Valdez in Alaska in 1989), there was a Commission of Inquiry. Led by Dr Patrick McTaggart-Cowan, executive director of
History of the oil tanker engines, as opposed to the older steam engines. The "Vandal", the first diesel-electric ship, was capable of carrying 750 long tons of refined oil was powered by three diesel motors. The larger "Sarmat" employed four 180 h.p. engines. The first seagoing diesel-powered tanker, 4,500 ton "Mysl", was built by Nobel's competitors in Kolomna. Nobel responded with "Emanuel Nobel" and "Karl Hagelin", 4,600 long ton kerosene tankers with engines. The 475 ft., 7-masted schooner "Thomas W. Lawson", built in 1902, was the largest purely sail tanker ever built. It carried coal, and oil in barrels from Texas to the East Coast