Upon graduation in 1905, Bowen was assigned to Maryland and then to Dixie in 1906. He received his commission as ensign upon passing his final examinations as a midshipman in the spring of 1907, after which he was assigned to Kansas during the first leg of the Great White Fleet. He transferred to Pennsylvania in the spring of 1908 and eventually became the Chief Engineer's first assistant.[5]
In 1910, Bowen's request for a transfer to Hopkins as the executive officer was granted.[5] Aboard Hopkins he learned a great deal about engineering due to the poor condition of the ship and eventually became the engineering officer as well as the executive officer, with only two officers aboard. Hopkins suffered a boiler accident and two sailors were killed, but Bowen was away from the ship that day taking a promotions exam. After the commanding officer departed, Bowen was the only officer left on Hopkins and became commanding officer as a lieutenant.[6]
Bowen went on to serve as Chief Engineer on several ships and was attached to Tennessee in 1914, followed by Pittsburgh (ex-Pennsylvania) in late 1915[7] and Arizona in late 1918.[8]
Bowen spent three years ashore ending July 1922, part of it as a shop superintendent and later as Engineer officer of the Mare Island Navy Yard.[9] He became Assistant Fleet Engineer under Admiral Edward Walter Eberle, Commander of the Battle Fleet, embarked on California. He was later the Fleet Materiel Officer for the Battle Fleet under Admiral Samuel Robison, aboard Seattle. Bowen returned to shore as Production Manager of Puget Sound Navy Yard, prior to 1930.[10]
Bureau of Engineering
Bowen was the Assistant Chief of the Bureau of Engineering from 1931 to 1935 and then the Chief of the Bureau of engineering from 1935 to 1939.[11] While there Bowen was a champion for research and development (R&D) of high pressure, high temperature steam propulsion.[4] This technology was said radically to have changed maritime steam turbine operation, increasing the speed and range of Navy ships in World War II.[12]
Naval Research Laboratory
Bowen was Director of the Naval Research Laboratory (NRL) from 1939 to 1941. According to Amato, in "Pushing the Horizon", a history of the Naval Research Laboratory, Bowen's leadership of NRL was mixed. He championed vital research, such as Radar, yet his personality conflicts with key figures like Vannevar Bush and Secretary of the Navy Frank Knox ultimately excluded the Navy and NRL from the Manhattan Project. Similar conflicts with William Sterling Parsons, Rickover and others also prevented Bowen from being involved post war nuclear development handing development of the Nuclear navy to Admiral Hyman G. Rickover at the Bureau of Ships instead.[4] Although Bowen and NRL were excluded from the Manhattan project, NRL's work starting in 1939 on thermal separation of uranium isotopes at the Philadelphia Navy Yard steam plant did become a part of the project to build the atomic bomb. The S-50 facility at Oak Ridge National Laboratory was based on that concept as well.[4]
Strike breaking
One of Bowen's duties during the war was to seize and operate corporations for federal government under Presidential executive orders. His and the Navy's first corporate seizure of World War II was Federal Shipbuilding and Drydock Company in Kearny, New Jersey. The large shipyard near New York City had shut down due to a strike for the better part of August 1941 with no work being done on $493 million ($10.2 billion today) in defense contracts. As the Navy's Officer-in-charge, Bowen operated the yard for 134 days meeting many of the originally scheduled deadlines returning operation back to the company in early January 1942. He was also the officer in charge during the seizure of Los Angeles Shipbuilding and Dry Dock Company. He would seize and operate a half dozen other major industrial plants, among others, for the Navy during the war.[13]
Later career
In 1942, Bowen was made Special Assistant to the Under Secretary of the Navy, James V. Forrestal (1942–1944) and after Secretary Knox's death, Bowen became Special Assistant to the Secretary of the Navy, Forrestal (1944–1947). In 1946, Forrestal made Bowen the first leader of the Office of Research and Invention (ORI) which would eventually become the Office of Naval Research. In January 1947, Bowen made a six-point policy proposal to Navy leadership pushing for comprehensive R&D into nuclear propulsion, munitions, nuclear medicine and nuclear science, but he failed and those activities went to the Bureau of Ships under Admiral Rickover instead of Bowen's ORI.[4] Bowen retired on 1 June 1947, a week short of 46 years of service.[14]
Distinguished Service Medal (US Navy), from Secretary of the Navy Forrestal for his career of service to the Navy. Specifically citing his work relating to radar and steam propulsion research and his wartime duties in taking over industrial plants ensuring vital war material production.[20]