The Treasury-class cutter was a group of seven high endurance cutters launched by the United States Coast Guard between 1936 and 1937. The class were called the "Treasury class" because they were each named for former Secretaries of the Treasury. These ships were also collectively known as the "327's" as they were all in length. The Treasury-class cutters proved versatile and long-lived warships. Most served the United States for over 40 years, including with distinction through World War II, Korea, and Vietnam. In the words of naval historian John M. Waters, Jr., they were their nation's "maritime workhorses. The 327s battled through the 'Bloody Winter' of 1942–43 in the North Atlantic," with the ships fighting off and destroying German U-boats, and rescuing survivors from torpedoed convoy ships. Roles of the 327s included serving as amphibious task force flagships in World War II, pilot search and rescue (SAR) during the Korean War, and a critical component of Operation Market Time during the Vietnam War. "Most recently, these ships-that-wouldn't-die have done duty in fisheries patrol and drug interdiction. Built for only $2.5 million each, in terms of cost effectiveness we may never see the likes of these cutters again." Commencing in the late 1970s the Treasury-class cutters were gradually replaced or their duties taken over by newer and larger high endurance cutters. Design and construction The 327s were designed to meet changing missions of the service as it emerged from the Prohibition era. Because the air passenger trade was expanding both at home and overseas, the Coast Guard believed that cutter-based aircraft would be essential for future high-seas search and rescue. Also, during the mid-1930s, narcotics smuggling, mostly opium, was on the increase, and long-legged, fairly fast cutters were needed to curtail it. The Treasury class were an attempt to develop a cutter capable of carrying an airplane in a hangar. The final design was based on the Erie-class US Navy gunboats; the machinery plant and hull below the waterline were identical. This standardization would save money—always paramount in the Coast Guard's mind, as the cutters were built in U.S. Navy shipbuilding yards. Thirty-two preliminary designs based upon the Erie class were drawn up before one was finally selected. The healthy sheer forward and the high slope in the deck in the wardrooms was known as the "Hunnewell Hump." Commander (Constructor) F. G. Hunnewell, USCG, was the head of the Construction and