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composite sailing. 1204. Rhumb Lines 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 1. latitude.
comparing the Great Circle and the Rhumb Line tracks between place of departure at 6000N 01000E and different destinations, all of which are located on the 6000N parallel. In this case the Rhumb Line track will be 270°, and the Rhumb Line distance is easy to calculate, using the formula for departure. Observing the Great Circle track and
The rhumb line connecting any two points of the great circle on the same side of the equator is a chord of the curve. Along any intersecting meridian the great circle crosses at
The initial rhumb line course equals the orthodromic course at the middle latitude. The rule is mnemonic and straightforward for practical navigation.
The formulas for determining a ship’s dead-reckoned position, given an initial known location, the vessel’s course and speed, and the time elapsed, are referred to as the sailing formulas....
Short distance sailing is a term which is applied to sailing along a rhumb-line for distances less than 600 nautical miles. From the formulas derived above, the following are used extensively in short distance sailing:
Great circle navigation - sailing calculator software: distance-bearing between two points - formulas - rhumb line - excel spreadsheet program - free download.
