Vickery was an assistant to
Emory S. Land, chairman of the
United States Maritime Commission, between 1937 and 1940. Land oversaw all shipbuilding, design, and construction work for the
United States Merchant Marine. Together the two were described as "one of the most remarkable combinations in Washington", and played a critical role in the foundation of the
United States Merchant Marine Academy. By 1940 he was made a full member of Maritime Commission by President Roosevelt. There was much demand for shipbuilders at this time, including a request from a British commission to use American shipyards to build British freighters. Due to the shortage, Vickery hired
Henry J. Kaiser as one of his shipbuilding experts, despite many advising against it. Vickery was appointed vice-chairman of the United States Maritime Commission and deputy administrator of the
War Shipping Administration by 1942. Roosevelt asked that he produce 8,000,000 tons of shipping during 1942, and gave him enough steel and his choice of shipyards and shipbuilders. Vickery delivered on this order, and by July could declare that more new ships had been produced than had sunk since the
attack on Pearl Harbor. At its peak in 1943 there were over 650,000 men and women employed in shipyards on all coasts and the Great Lakes building ships for the commission. Without the tremendous feats of production accomplished by the Emergency Program the lifeline to Great Britain may have been severed by Germany's U-Boat offensive and the ability for U.S. forces to project their newfound military power across both Atlantic and Pacific Oceans would have been severely diminished. A man with an amazing ability to retain information about shipyards and the vessels being built during the war, Vickery was tireless in his efforts to stay on top of the program. The strain of which eventually brought about a serious heart attack on September 25, 1944, which required him to be bedridden until early 1945 when he resumed his duties. His health never fully recovered, Admiral Vickery was granted retirement from the Navy in October 1945 and ended his duties at the Maritime Commission on December 31. By then, the phenomenal construction program of World War II was completed and both ships and shipyards were being liquidated as surplus to postwar requirements. Vice admiral Howard L. Vickery died of heart attack on March 21, 1946, aged 53, in
Palm Springs, California. He was buried with full military honors at
Arlington National Cemetery,
Virginia. He was survived by his wife Marguerite Blanchard Vickery (1892–1974) and their two children, a daughter Barbara Vickery Bowie (1923–2002) and a son Hugh Blanchard Vickery (1919–2001), who retired from the Navy as
Commander. Vickery Gate, the main public entrance and security facility at the
United States Merchant Marine Academy in Kings Point, New York is named in his honor. He was also appointed posthumously
Honorary Knight Commander of the Order of the British Empire for his service for the allied cause. ==Decorations==