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Summary of Formulas. The formulas so far derived in this appendix are summarized below: Ddist = Dlong x Cos Lat. Dlong = Ddist ÷ Cos Lat = Ddist x Sec Lat. . dep.= d.long cos(mean lat) (for distances 600 n.m. or less). Dep. = d.long cos(mid lat). (for distances over 600 n.m.). The Rhumb Line Formulas.
A rhumb line makes the same angle with all meridians it crosses and appears as a straight line on a Mercator chart. The principal advantage of a rhumb line is that it maintains
rhumb line between two places does not change its true course. A rhumb line makes the same angle with all meridians it crosses and appears as a straight line on a Mercator chart. For any other case, the difference between the rhumb line and the great circle connecting two points increases (1) as the latitude increases, (2) as the difference
27 cze 2024 · In this paper, equations are established to solve problems of Rhumb Line Sailing (RLS) on an oblate spheroid. Solutions are provided for both the inverse problem and the direct problem, thereby providing a complete solution to RLS.
The formulas enable to solve the tasks with a use of electronic calculator and application of traditional methods on plane and sphere, and they also take the Earth’s ellipsoidal shape into consideration. Keywords: loxodrome (rhumb-line sailing), plane (or middle latitude) sailing, Mercator triangle (Mercator sailing) 1. Introduction
4 lut 2008 · The most convenient tabular method of determining a G-C departure course, arrival course, and the waypoints in between is via h.o.229 for which directions in it's use may be found within or in Bowditch Vol.1, the Sailings chapter.
Namely, to reach the Great Circle vertex with two rhumb line legs ensuing the optimized distance, an initial rhumb line course equal to the orthodromic course at middle latitude may be used.
