# What is plane sailing method and where it is applicable?

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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.

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## What is Traverse sailing in navigation?

: 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.

• Pilotage.