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## What is the importance of plane sailing?

Plane sailing solves problems involving **a single course and distance, difference of latitude, and departure**, in which the Earth is regarded as a plane surface. This method, therefore, provides solution for latitude of the point of arrival, but not for longitude.

## 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 plane sailing?

1 : **the navigation or conducting of a ship by neglecting the earth’s curvature and considering the earth or a part of it as a plane**.

## What is the difference between parallel sailing and plane sailing?

Whenever ship sails on a east or west course, it is called parallel sailing. The distance travelled on this course along parallel of latitude **is equal to departure**. When ship sails along a rhumb line, it is called plane sailing. Rhumb line is a line on surface of earth which cut all meridians at same angle.

## What is the formula for plane sailing?

These relationships are now known as the plane sailing formulae, namely: **departure = distance x sine course d.** **lat.** **=distance xcosine course.**

: **plane sailing in which a ship follows two or more courses in succession with the difference in latitude and departure being added algebraically to find a single resultant course and distance**.

**The most common navigation methods are satnav, dead reckoning, and radar navigation.**

- Dead reckoning.
- Pilotage.
- Celestial navigation.
- Inertial navigation.
- Radio navigation.
- Radar navigation.
- Satellite navigation.

## What are meridional parts?

: **the linear length of one minute of longitude on a Mercator chart**.

## What is short distance sailing?

Short distance sailing is a term which is applied to **sailing along a rhumb-line for distances less than 600 nautical miles**.