What are the differences between great circle sailing and composite great circle sailing?
A feature of great circle sailing is that a great circle route, unless it is along a meridian, lies poleward of the corresponding rhumb line route. When following a composite route the vessel is sailed due east or due west along the limiting parallel between the vertices of the two great circle arcs.
What is great circle sailing method?
A method of navigating a ship along the shortest navigable distance between the point of departure and the point of arrival. The shortest distance between any two points on a sphere is the circumference of the circle which joins them and whose centre is at the centre of the sphere.
What is the advantage and disadvantage of great circle sailing?
The advantage of a great circle is obvious, the shorter distance. The disadvantages, depending on latitude, could be quite a few. Colder weather, stronger winds, higher seas and perhaps even icebergs.
What is the purpose of great circle sailing?
Great Circle Sailing is used for long ocean passages. For this purpose, the earth is considered a perfect spherical shape; therefore, the shortest distance between two points on its surface is the arc of the great circle containing two points.
What is the advantages of composite sailing?
Composite sailing (see Article 2402 Page 2 346 THE SAILINGS and Article 2410) may save time and distance over the rhumb line track without leading the vessel into danger.
Why is it called plane sailing?
To make calculations simple, sailors assumed that the ship was sailing on a flat or a ‘plane surface’. The original expression was, in fact, ‘plane sailing’. Since spelling had not been standardised, the two words ‘plain’ and ‘plane’ were used interchangeably.
What is the meaning of great circle sailing?
Great circle sailing involves the solution of courses, distances, and points along a great circle between two points. Great Circle Sailing is used for long ocean passages.
How to make a great circle sailing deck?
DECK 122 (NAVIGATION-II) Great circle sailing-Example Lat A = 34° P27’ N Lat B = 41° 23’ S D.Long = 105° 44’ North elevated pole PA = 90° – 34° 27’ PA = 55° 33’ Calculator Press 90 Press °’’’Press –Press 34 Press°’’’Press 27°’’’ A B SAK 20 DECK 122 (NAVIGATION-II) Great circle sailing-Example
When does it make sense to travel a great circle?
Simply, when plotting a course over a distance of 500 miles or more it usually makes sense to travel a ‘ Great Circle ’ route between origin and destination as it will be a shorter distance over the surface of the planet than the straight route – also known as the Rhumb Line. A piece of string
When do you use a great circle route?
Simply, when plotting a course over a distance of 500 miles or more it usually makes sense to travel a ‘ Great Circle ’ route between origin and destination as it will be a shorter distance over the surface of the planet than the straight route – also known as the Rhumb Line.
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