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 ships with oil instead of coal, mass-production of automobiles and increasing aviation, all increased demand for oil and thus oil transport. In 1928 the World's largest oil tanker was the , completed that year for Canadian owners by Bremer Vulkan in Germany. With the right connections at the Shipping Board, ships could be bought cheaply, which caused a lot of fraud. This system was too complicated for the oil companies however, so when World War II started, independents owned 39 percent of the world tanker fleet. This was especially because oil companies needed capital to invest in the growing oil