Instrument: Global Positioning System Receiver
The Global Positioning System (GPS) is a U.S. space-based radionavigation system that provides reliable positioning, navigation, and timing services to civilian users on a continuous worldwide basis. The U.S. Air Force develops, maintains, and operates the space and control segments of the NAVSTAR GPS transmitter system. Ships use a variety of receivers (e.g. Trimble and Ashtech) to interpret the GPS signal and determine accurate latitude and longitude.
GPS - Northstar 951XDW receiver in the pilothouse and a remote display in the Dry Lab.
GPS 'P-Code' Receiver - Trimble Tasman.