the past two years five major oil companies have installed Sperry Marine Voyage Management System (VMS) integrated navigation and control systems on 30 current and newbuild tankers. Sperry Marine's ...

The U.S. Coast Guard (USCG) is working to provide Differential Global Po sitioning System (DGPS) service for harbor and harbor approach navigation by 1996. DGPS technology is the first to economically ...

Driving in circles? A good GPS can help get you where you're going quickly and safely so you arrive on time. I’m PCMag’s home theater and AR/VR expert, and your go-to source of information and ...