((a)) There is in the Office of the Secretary of the Navy the Office of the Naval Inspector General. The Naval Inspector General shall be detailed from officers on the active-duty list in the line of the Navy serving in grades above captain.

((b)) The Naval Inspector General, when directed, shall inquire into and report upon any matter that affects the discipline or military efficiency of the Department of the Navy. He shall make such inspections, investigations, and reports as the Secretary of the Navy or the Chief of Naval Operations directs.

((c)) The Naval Inspector General shall cooperate fully with the Inspector General of the Department of Defense in connection with the performance of any duty or function by the Inspector General of the Department of Defense under chapter 4 of title 5 regarding the Department of the Navy.

((d)) The Naval Inspector General shall periodically propose programs of inspections to the Secretary of the Navy and shall recommend additional inspections and investigations as may appear appropriate.