Irvin H. Gatzke, 64, a retired official of the Naval Air Systems Command, where he specialized in antisubmarine warfare and related subjects, died July 4 at the Winneshiek County Memorial Hospital in Decorah, Iowa, after a heart attack. He lived in Silver Spring and was on vacation when he was stricken.

Mr. Gatzke was born in Milwaukee. He earned a bachelor's degree in electrical engineering from the Milwaukee School of Engineering and also graduated from the University of Wisconsin. He later attended the University of Maryland.

He moved to Washington in 1937 and soon after joined the Navy. In 1942, he was assigned to the Bureau of Aeronautics in the Navy Department and remained there until the end of World War II.

After his active service, Mr. Gatzke went to work at the bureau as a civilian research and development official, working on antisubmarine-warfare devices. He later transferred to the Naval Air Systems Command, where he was surveillance administrator in the research and technology group at the time of his retirement in 1974. He won several awards during his career.

At the time of his death, Mr. Gatzke was a private consultant on defense projects.

He was a member of Christ Lutheran Church, the Society of Professional Engineers and the American Institute of Electronics and Electrical Engineers. He also grew prize-winning roses.

Survivors include his wife, the former Esther Koeritz, of Silver Spring; three daughters, Nancy Shaffer of Potomac, Joan Berkowitz of Gaithersburg, and Barbara Bingham of Silver Spring, and three grandchildren.