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2. Nautical star - Wikipedia

   en.wikipedia.org/wiki/Nautical_star

   The nautical star is an informal signifier indicating membership in the United States Coast Guard, United States Navy, or United States Marine Corps. The symbol recalls both the five-pointed star of the US national flag and the color pattern of the compass rose found on many nautical charts. Insignia including nautical stars:

3. List of stars for navigation - Wikipedia

   en.wikipedia.org/wiki/List_of_stars_for_navigation

   The final characteristic provided in the tables and star charts is the star's brightness, expressed in terms of apparent magnitude. Magnitude is a logarithmic scale of brightness, designed so that a body of one magnitude is approximately 2.512 times brighter than a body of the next magnitude.

4. Compass rose - Wikipedia

   en.wikipedia.org/wiki/Compass_rose

   A common compass rose as found on a nautical chart showing both true north (using a nautical star symbol) and magnetic north with magnetic variation. Also notice the correspondence between the 32-point rose (inner circle) and the modern 0–360° graduations. Compass rose with the eight principal winds.

5. Nautical chart - Wikipedia

   en.wikipedia.org/wiki/Nautical_chart

   A nautical chart or hydrographic chart is a graphic representation of a sea region or water body and adjacent coasts or ... Nautical star; Navigation room; Portolan ...

6. Celestial navigation - Wikipedia

   en.wikipedia.org/wiki/Celestial_navigation

   A diagram of a typical nautical sextant, a tool used in celestial navigation to measure the angle between two objects viewed by means of its optical sight. Celestial navigation, also known as astronavigation, is the practice of position fixing using stars and other celestial bodies that enables a navigator to accurately determine their actual current physical position in space or on the ...

7. Marshall Islands stick chart - Wikipedia

   en.wikipedia.org/wiki/Marshall_Islands_stick_chart

   Stick charts were made and used by the Marshallese to navigate the Pacific Ocean by canoe off the coast of the Marshall Islands. The charts represented major ocean swell patterns and the ways the islands disrupted those patterns, typically determined by sensing disruptions in ocean swells by islanders during sea navigation.