32 C.F.R. § 700.1058 Command of a submarine.
Title 32 - National Defense
The officer detailed to command a submarine shall be an officer of the line in the Navy, eligible for command at sea and qualified for command of submarines.
Title 32: National Defense
PART 700—UNITED STATES NAVY REGULATIONS AND OFFICIAL RECORDS
Subpart J—Precedence, Authority and Command
Detail to Duty
§ 700.1058 Command of a submarine.