Peninsular and Oriental Steam Navigation Company | Astro | Astro Boy | Lehigh Coal & Navigation Company | navigation | GPS navigation device | Astro (satellite TV) | Astro Boy: Omega Factor | Navigation | Lehigh Coal and Navigation Company | celestial navigation | British-India Steam Navigation Company | Astro (rapper) | Trimble Navigation | Navigation Acts | Inertial navigation system | inertial navigation system | Astro (Japanese band) | Vance Astro | Trent Navigation Company | Sheffield and South Yorkshire Navigation | Radio navigation | Puget Sound Navigation Company | Pacific Steam Navigation Company | Institute of Navigation | Chevrolet Astro | Tacoma and Burton Navigation Company | Stroudwater Navigation | Stort Navigation | Space Communications and Navigation Program |
Much of Ramsayer's research on navigation concerned dead reckoning, automatic navigation maps based on Doppler radar, and improvements in astro navigation.