Harold Williams Heinrichs, 62, a retired navy chief petty officer, died Wednesday of Pneumonia at the Bethesda Naval Medical Center.

A resident of Bowie since he left the service in 1968, he had been active in veterans and civic organizations in Maryland.

Mr. Heinrichs was born in Milwaukee. During his Navy career, he saw duty in Great Lakes, Philadelphia and Hawaii.

His last assignment from 1959 to 1962 was in the computer laboratory of the weapons department at the Naval Academy in Annapolis. He instructed midshipmen, officers and civilian instructors and enlisted personnel in electronics.

Mr. Heinrichs had been a senior vice chairman and an adjutant of the Omaha Beach chapter, Disabled American Veterans, in Bowie.

He also was active in the Veterans of Foreign Wars and American Legion Post No. 136 in Greenbelt. He was a member of Annapolis Lodge No. 89 of the Masons and Boumi Temple of the Shrine in Balitmore.

From 1969 to 1974, Mr. Heinrichs worked for the United States Maintenance Corp., a building and cleaning firm in Washington where he became an assistant vice president. He was an honorary member of Columbia Council 22 of Universal Craftsmen, Council of Engineers.

He is survived by his wife, Katherine A., of the home; a son, Harold W. Jr., of Bowie; a daughter, Sandra Jean Milligan, of Edgewater, and four grandchildren.