SIRS Navigation Ltd.
Designs, manufactures and repairs magnetic compasses, sextants and other navigation instruments.
http://www.sirs.co.uk/

USCG Navigation Center
USCG Navigation Center
http://www.navcen.uscg.gov/

Navigation and Related Subjects
Covers celestial navigation theory, sextant errors and corrections, rhumb line calculations and coastal navigation and conning.
http://jacq.istos.com.au/sundry/navig.html

Weems & Plath
Weems and Plath precision marine navigation instruments are steeped in the traditions of modern nautical navigation. Sailing tools and classic brass gifts.
http://www.weems-plath.com/

Thales Navigation
THALES Navigation is a European manufacturer of high-precision navigation and positioning systems based on GPS and GNSS technology. The company designs and markets innovative and highly-advanced equipment for professional applications in marine or land environments.
http://www.thalesnavigation.com

Celestial Navigation Net
An annotated hub site of resources relating to navigating by the stars, including theory, practice, history, instruments, and classroom links.
http://www.celestialnavigation.net/

Celestial Navigation Net
Annotated hub site of resources relating to navigating by the stars, including theory, practice, history, instruments, and classroom links.
http://www.celestialnavigation.net/

Innovative Navigation
Development and commercialization of navigation systems for inland navigation as well as consulting services in the fields of control theory, system theory, multi-sensor systems and artificial intelligence.
http://www.innovative-navigation.de

Laser Navigation System
Laser navigation of robot based on PC computer using artificial intelligence.
http://www.geocities.com/progsk/rob/

Constellation Technology Corporation
analytical instruments, instruments, scientific instruments, nuclear instruments, radiation detection, multichannel analyzer, spectrometers,
http://www.contech.com/