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## What is the importance of using Mercator sailing in calculating for course and distance?

Charts used on board ships generally are Mercator charts. On these charts bearings, courses and distances can be directly read off or plotted on the charts. For calculating course and distance between two given points on surface of the earth, the Mercator sailing formula is **more accurate than plane sailing formula**.

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

* It is **similar to plane sailing** except that plane sailing is used for small distance. * In mercator sailing the d’lat is expressed in longitudinal units, which is the difference of meridianal parts. * In plane sailing the d’long is expressed in latitude units or Nautical miles.

## What is difference of latitude?

Dictionary of Nautical Terms

difference of latitude. **The distance between any two places on the same meridian**, or the difference between the parallels of latitude of any two places expressed in miles of the equator.

## What are the two categories of Mercator sailing?

In broad terms, there are two main types of sailing, namely, **the Rhumb Line sailing and the Great Circle sailing**.

## How is meridional part defined?

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

## What are the limitations of a Mercator sailing?

Disadvantages of Mercator’s projection: – **Mercator’s projection does not preserve lengths or areas further from the equator** – the smallest distance on the globe is not realized by a straight line on the map – not suitable for teaching geography and in political maps (this projection distorts areas and sizes of states …

## How do you name a difference in longitude?

Latitudes are measured in degrees. Longitudes: The vertical lines running north-south, join the two poles. They are called the meridians of longitude.

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What is the difference between Latitude and Longitude?

Latitude | Longitude |
---|---|

It is known as parallels | It is known as meridians |

The length of the lines are different | The length of the lines are the same |