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13 paź 2023 · As an imaginary line on the earth’s surface, rhumb lines are a standard method of plotting a ship’s course on a chart. However, a rhumb line is not the shortest distance between two points on a sphere. The shortest distance is called a great circle. In mathematical terms, rhumb lines are called loxodromes from the Greek term for running at ...
Rhumbline network. Windrose network -16 vertex on each Portolan. Image of Petrus Vesconte. A rhumbline network (or windrose network) is a navigational aid consisting in multiple lines in a web-like grid drawn on portolan charts (and other early maps ). These nautical charts were used in the medieval age and age of exploration in marine navigation .
A rhumb line is a curve that crosses each meridian at the same angle. This curve is also referred to as a loxodrome. Although a great circle is the shortest path, it is difficult to navigate because your bearing (or azimuth) continuously changes as you proceed. Following a rhumb line covers more distance than following a geodesic, but it is ...
In this video the main characteristics of the great circle routes and the rhumb lines are explained, together with graphic examples and practical application...
Sailing on a typical cruising yacht, that is the best part of 24 hours’ sailing between your origin port and your destination. ... Over a longer oceanic passage, it makes sense to travel on a Great Circle Circle than the Rhumb Line due to the extra time and energy involved.
27 sty 2020 · a rhumb line, rhumb, (/rʌm/) or loxodrome is an arc crossing all meridians of longitude at the same angle, that is, a path with constant bearing as measured relative to true or magnetic north. From: Wikipedia. If continued, all rhumb lines except the ones following a track of 90 or 270 degrees end up in either the North or South Pole.
21 paź 2009 · About ten years ago this author wrote the software for a suite of navigation programmes which was resident in a small hand-held computer. In the course of this work it became apparent that the standard text books of navigation were perpetuating a flawed method of calculating rhumb lines on the Earth considered as an oblate spheroid.
