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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 track between the same positions on the Earth’s surface: • The Great Circle track will continuously change it’s true direction, while the 4 The Rhumb Line and
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
As known, a vessel sailing on the GCT in a constantly varying course is impossible and thus, a series of rhumb lines is necessary to be adopted for approximating the GCT in practice [2, 3, 9, 18]. Before doing so, the waypoints must be located. However, to determine the waypoints on the GCT, the navigator has to provide some initial conditions.
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....
1 cze 1995 · This paper provides simple formulas that include the earth's oblateness, which can be readily applied to sailing calculations. The accuracy of these formulas is assessed, and they are shown to be good to about 10 m over ranges up to 1000 km.
An approach formulated by vector algebra is proposed to deal with great circle sailing problems. Using the technique of the fixed coordinates system and relative longitude concept, derivations of formulae for this approach are simpler than those of the conventional methods.
The initial rhumb line course equals the orthodromic course at the middle latitude. The rule is mnemonic and straightforward for practical navigation.
