Compasses, Sextants
- Bellclocks.com - Clocks, Sextants and More
- BoatingLinks.com Boating Store
- Celesticomp Incorporated
- CelestNav
- Island Marine Instrument Co, Inc.
- KVH
- Le site web de la navigation astronomique
- Marathon Leisure - UK Marine Equipment Spplier
- Morovision Night Vision
- Nautical Almanac at stormy Weather Software Ltd
- OpticsPlanet.com
- Pioneer Research
- Ritchie Navigation
- Rule
- Stanley London
- Swift Instruments, Inc
- Weems & Plath
- WinAstro Celestial Navigation Software