American practical navigator: an epitome of navigation and nautical astronomy (1914)
Bowditch, Nathaniel, 1773-1838, Logan, George Wood, 1868-1915, United States. Navy Dept. Bureau of Equipment · Washington, Govt. Print. Off · leaf 71
ongas the angle subtended by AB is lessthan AEB and greater than AGB. 156. The vertical danger angleinvolves the same general principle, ascan be readily seen without explanation by reference to the figure 22 in which AB represents a vertical object of knownheight. 157. THE DANGER BEARING.—This is… … FIG. 22. PILOTING. 65
Navigation · Nautical astronomy
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