Ralph Waldo Christie

Ralph Waldo Christie
Rear admiral Ralph W. Christie, USN
Born	(1893-08-30)30 August 1893 Somerville, Massachusetts, U.S.
Died	19 December 1987(1987-12-19) (aged 94) Honolulu, Hawaii, U.S.
Allegiance	United States
Service/branch	United States Navy
Years of service	1915–1949
Rank	Vice Admiral
Commands held	Submarines, Southwest Pacific Area Task Force 42 Newport Torpedo Station Submarine Division 15 USS S-17 USS S-1 USS R-6 USS Octopus
Battles/wars	World War I World War II
Awards	Navy Distinguished Service Medal Silver Star Legion of Merit

Ralph Waldo Christie (30 August 1893 – 19 December 1987) was an admiral in the United States Navy who played a pivotal role in the development of torpedo technologies. During World War II, he commanded submarine operations out of the Australian ports of Brisbane and Fremantle.

A 1915 graduate of the United States Naval Academy, Christie served on a variety of warships beginning with the battleship New Jersey in 1915. He was trained in torpedo design and implementation and became one of the first members of the Submarine School at New London. In 1923 Christie graduated from the Massachusetts Institute of Technology with a Master's degree in Mechanical Engineering, specializing in torpedoes. During the 1920s, he was involved with project G-53, a highly secret program to develop a magnetic influence exploder for torpedoes. The result of this was the development of the Mark 6 exploder and the Mark 14 torpedo. Christie also developed a design for an oxygen torpedo, designated project G-49 or "Navol".

After the United States entered World War II, Christie was posted to Brisbane and commanded submarine operations during the Solomon Islands campaign. He then returned to the U.S. as Inspector of Ordnance at the Newport Torpedo Station. In January 1943, Christie returned to Australia as commander of submarine operations in Fremantle. Despite growing evidence of problems with the Mark 6 exploder and the Mark 14 torpedo, he remained convinced of their effectiveness. During 1944, he accompanied war patrols on the submarines USS Bowfin and USS Harder. In November 1944, Christie was relieved of command of submarine operations at Fremantle by Vice Admiral Thomas C. Kinkaid and returned to the United States, where he commanded the Puget Sound Navy Yard. He retired from the Navy in August 1949 with the rank of vice admiral.