System navigation or or NNSS, the first Guidance System satellite that was to shape operational. This system, initially for the United States Navy, was designed information the exact location for submarines, carriers, ballistic missile , etc. provide. After commissioning, the system for ships, also to was and for mapping Marine and terrestrial, was also used. This system from 1964 to the next to form a continuous positioning services satellite first for the submarine, and, ultimately, for ordinary people offered. System Transit from 1996 onwards for use as a monitoring system Navy (NIMS) goes to work.