Php runescape online sextant


30-Jun-2017 17:49

A sextant does not require a completely steady aim, because it measures a relative angle.

For example, when a sextant is used on a moving ship, the image of both horizon and celestial object will move around in the field of view.

For navigation in sight of land or in the fog, power or sail, in large or small vessels we offer online and home study courses, plus the required tools and books.

We've also collected an extensive set of internet links to marine navigation resources on the net.

Plus downloads of the International, US Inland, and Canadian Navigation Rules.

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The frame of a sextant is in the shape of a sector which is approximately ​ Attached to the frame are the "horizon mirror", an index arm which moves the index mirror, a sighting telescope, sun shades, a graduated scale and a micrometer drum gauge for accurate measurements.Tips on the best way to learn the Rules plus all the resources you need to do it.



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