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A hand-bearing compass can perform a lot of tasks, including reducing anxiety when crossing another boat and fixing your position in at least two different ways. Diagrams
[BoatUS, Alexandria, VA, USA]
A brief explanation of the differences between first, second, and third generation technology, and light amplification -v- thermal imaging -v- IR illumination.
[Ocean Navigator]
Short primer on night vision light amplifiers
[BoatUS]
Good description of two well-know ways that a bearing compass can reduce anxiety and increase safety, and three other lesser known uses.
[BoatUS, Alexandria, VA, USA]
Matthews rates the equipment that he found most useful, including his binoculars with internal compass, on a cruise from Charleston down through the islands to Venezuela.
[SailNet]Note: For additional How-To resources regarding binoculars and hand-bearing compasses, see the separate topic Navigation Skills.
How to build a box to protect your binoculars and where to mount it.
[Practical Sailor]
A discussion of the usefulness of these navigation instruments, with tests of units from ComNav Marine, Davis, Plastimo, Ritchie, Suunto, and Weems & Plath. 3 pages with photos.
[Sail Magazine, September 2005]
Eight models from $165 to $770 are rated for optical clarity and brightness, light-gathering ability, ease of use, and how well each "gets out of the way and puts you in the scene." 6 pagew with photos and table
[Practical Sailor, 1 August 2003]
11 binocular and monocular night scopes from ITT, Newcon Optik, Night Owl, and Bushnell tested. 5 pages with photos, comparison table, and vendor list.
[Practical Sailor, 1 June 2002]Our glasses get used dozens of times every day as we travel the Waterway -- to check bridge clearances, to read the numbers on navigation markers, to read boat names, to observe wildlife, and for lots of other purposes.
Milt Baker
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