sentences:  Born in Baltimore, Maryland, Hubbard graduated from the United States Naval Academy in June 1925, served 3 years on the battleship , then qualified in submarines at New London, Connecticut.Following duty in submarine "S-34", he completed Naval Academy postgraduate work, then served on the submarine tender , and, was an executive officer of the destroyer .He served at the Naval Torpedo Station at Newport, Rhode Island then commanded the destroyer from 1939 to 1940, before assignment as staff gunnery officer for destroyers in the Atlantic.