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Slgs
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Расписание отхода судов, русский
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Sailings, английский
A navigator’s collective term for various methods of calculating course, distance, latitude, longitude, and departure. a dozen examples are given, some of which are no longer used. • plane sailing: following a course plotted without considering the curvature of the earth. • spherical sailing: a sailing that does consider the spherical (spheroidal) shape of the earth. • traverse sailing: uses the principles of plane sailing to determine the equivalent course and distance made good while following a track consisting of a series of rhumb lines. • middle-latitude sailing: a method of converting departure into difference of longitude, or vice versa, by assuming that such a course is steered at the middle or mean latitude. • parallel sailing: occurs when the course is 090° or 270° true. • meridian sailing: occurs when the course is 000° or 180°. • mercator sailing: applies when the various elements are considered in their relation on a mercator projection. • rhumb-line sailing: the term used when a rhumb line is followed. • great-circle sailing: occurs when a great circle track is followed. • composite sailing: a modification of great circle sailing used when it is desired to limit the highest latitude. • current sailing: a term occasionally used to refer to the process of determining the effect of a current on the direction of motion of a vessel or its predicted course made good. • dead reckoning: not really a sailing so much as an estimate of position arrived at by calculating course, speed, and drift, without the benefit of observations (see also estimated position).
Sacks, английский
Мешки
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