DAVIS INSTRUMENTS Mark 25 Sextant Velocitek Shorebased Courses

Shorebased Courses

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the Blue Tide sunglasses are your ultimate companion

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DAVIS INSTRUMENTS Mark 25 Sextant Velocitek Shorebased CoursesA sextant is an excellent tool to have on board any size craft as a backup in case there is a failure of the navigational systems. Used to measure the angular distance between two visible objects, the most common sextant navigation points are an astronomical object and the horizon. Sextants have many uses, ranging from measuring the distance of a landmark to determining Greenwich Mean Time. The top of the line Davis plastic sextant, the Mark 25