Admiralty manual of navigation: B R 45(1), Vol. I 

 - 10th ed. 
 - London  The nautical institute  2012 
 - various pases 
<br/><br/><label>ISBN: </label>9781870077903 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Projection and Grids<br/>Spherical Mercator Sailing<br/>Visual Fixing
<br/><br/><label>Dewey Class. No.: </label>623.89  / NAU