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 49
ided into 360 degrees,which are appropriately marked. To obtain a complete curve, a sufficient number of observations should be takenwhile the ship swings through an entire circle. Generally, observations on everyalternate 15° rhumb are enough to establish a good curve, but in cases where… … FROM 180° SOUTH TO 360° NORTH DEVIATION DEVIATION WEST SOOTH EAST
Navigation · Nautical astronomy
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