Some common types are&colon; vans, reefers, flatbeds, sidelifts and tankers. Four reefers became the backbone of the reefer segment during the 1960s. For fresh and frozen goods refrigerator trucks or reefers are used. The reefers are using some heat exchangers that behaves as water cooled condensers&colon; water cooling. Most Japanese reefers were four-wheeled due to small traffic demands. In August 2003, a strategic partnership was established between NYK Reefers and LauritzenCool. Other "reefers" converted for US Navy use were the Danish ships , and . Operation of the ERD, along with its 2,100 reefers, was quickly absorbed by Merchants Despatch. The total number of Japanese reefers numbered approximately 8,100. He performed at President Bill Clinton's 1992 inauguration as a member of the Coral Reefers. The 1950s was the decade of reefers. The roof is held up by wooden reefers. That same year, FGE purchased 2,676 reefers from the Pennsylvania Railroad. By 1940, J. Lauritzen was owners of eight reefers. The next day, Alex escapes the ship and reaches Darwin while damaging the reefers.