scope:

a. The provisions of this instruction apply to the Chief of Naval Operations, Commandant of the Marine Corps, Fleet Commanders, and commanders of systems commands hereafter referred to as the Navy and Marine Corps (USN/USMC). The Commandant, U.S. Coast Guard has reviewed this directive and has agreed to provide appropriate Coast Guard representation to the USN/USMC POS/NAV Working Group.

b. For this instruction, POS/NAV includes position determination, point to point tracking, and arrival prediction. It also encompasses techniques, systems, equipment, and operator skills associated therewith. POS/NAV requires determination of position, heading, roll, pitch, velocity, altitude or depth, and time with respect to the operation of ships, submarines, aircraft and landing forces. POS/NAV parameters can be absolute or relative and include determination of rates of change.

c. POS/NAV also includes the systems and equipment used by aircraft, ships and submarines.