Raymond Minor Hudson Jr., 66, a senior partner in the law firm of Hudson, Creyke, Koehler & Tacke and one of the creators of the Seabees of the U.S. Navy, died Friday of a heart attack at his farm in the Blue Ridge Mountains, near Upperville, Va.

A native of Washington, Mr. Hudson was a specialist in the field of government contracts. He handled the contracts between private industries and the government for the construction of the Pan American Highway and Cape Canaveral, now Cape Kennedy.

As a lieutenant commander in World War II, Mr. Hudson was an aide to Admiral Ben Morrell. He was in charge of directing the construction work being done throughout the South Pacific and with Admiral Morrell conceived of the Seabees - a unit of Navy men trained in rapid construction.

A 1928 graduate of Central High School, Mr. Hudson was the captain of the school's Cadet Corps and led it to a second-place finish in citywide competition at Griffith Stadium.

Mr. Hudson attended George Washington University and its law school after leaving Central.

A former president of the District Jaycees, Mr. Hudson was vice president of the national Junior Cathedral No. 22.

Mr. Hudson is survived by two sons, Raymond Minor Hudson III, of Bernardsville, H.J., and John Edgar Hudson, of Gaithersburg; a sister, Mrs. William F Dismer Jr., of Washington and four grandchildren.