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The Celestial Sphere Shirt
The Celestial Sphere Shirt
The Celestial Sphere Shirt
The Celestial Sphere Shirt

The Celestial Sphere Shirt

Regular price $29.50

1527. The Horizon System of Coordinates

Experience navigators will know that this shirt is straight out of Bowditch!

For those still learning how to manipulate a sextant, the Horizon System of Coordinates is a system based upon the celestial horizon as the primary great circle and a series of secondary vertical circles which are great circles through the zenith and nadir of the observer and hence perpendicular to his horizon. It is used by blue water navigators to locate a ship's position upon the ocean. 

- 100% Fine Ring-Spun Cotton, 4.2 oz.
- Hand-Finished in the good ol' USA, Sweatshop Free!

All Images Copyright 2018 by IronTree Brand Clothing. All Rights Reserved.


Made In: United States

Shipped From: United States

Lead Time: 5 - 7 Days