scope:

Purpose

a. To describe program elements, requirements, and responsibilities for support of engineered operating cycle (OPCYCLE) programs for submarines.

b. Define operating interval (OPINTERVAL), OPCYCLE and service life, which are supported by the class maintenance plan (CMP) for each class of submarine. 

c. Outline provisions and actions required before exceeding established submarine OPINTERVAL, OPCYCLE, and service life. This will ensure all submarines are maintained to maximize their safe and effective operation throughout their respective lifecycles.

d. Delegate and authorize Commander, Naval Sea Systems Command (NAVSEASYSCOM) Undersea Warfare Directorate (SEA 07) with implementation, tracking and management of this instruction.

e. Delegate signature authority for OPINTERVAL and OPCYCLE extension approval to SEA 07 based on the requirements outlined in this instruction.

f. The Office of the Chief of Naval Operations (OPNAV) retains signature authority for service life extension (SLE) approval.