scope:

Scope and Applicability.

The provisions of this instruction are applicable throughout the U.S. Navy, in particular units who operate, utilize, and manage a submarine operating within a prescribed operating cycle and or operating interval.

Purpose.

To implement policy concerning submarine test and maximum operating depths, the conduct of test and deep dives by submarines, and use of escorts. This instruction is being reissued with a new date, updated version and signature authority to meet Chief of Naval Operations' (CNO) age requirement for Office of the Chief of Naval Operations instructions