Uttmark's guide to the United States local inspectors examination for masters and mates of ocean going steam and sailing ships (1919)
Uttmark, Fritz E · [New York] The Author · leaf 92
n board the ship is generally regulatedto keep Greenwich time and used in calculating theastronomical longitude of the ship. 56 NAVIGATION PROBLEMS CHAPTER H The Compass Error For explanation of variation, deviation andother subjects pertaining to the compass and themagnetic poles, etc., see pages… … SHOWING LEEWAY FOR A VESSELON STARBOARD TACK The amount differs according to the strength ofthe wind and roughness of the sea. It is best esti- 57 UTTMARKS GUIDE mated when standing in the after part of the vesseland looking at the wake of the ship. The angulardifference between this and an…
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