McLean secured a bank loan for $22 million and in January 1956 bought two World War II T-2 tankers, which he converted to carry containers on and under deck. McLean oversaw the construction of wooden shelter decks, known as Mechano decking. This was a common practice in World War II for the carriage of oversized cargo, such as aircraft. It took several months to refit the ships, construct containers to carry on and below the vessels' decks and design trailer chassis to allow removable containers.