# Where is DMP in Mercator sailing?

Contents

## What is the formula to obtain the distance in Mercator sailing?

DISTANCE = (D’LAT × SEC CO.)

## 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.

## 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.

• Pilotage.

## What is the importance of Mercator sailing?

This projection is widely used for navigation charts, because any straight line on a Mercator projection map is a line of constant true bearing that enables a navigator to plot a straight-line course.

## 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.

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## What is parallel sailing?

: spherical sailing in which the course is along a parallel and departure is the product of cosine latitude times the difference of longitude —opposed to meridian sailing.

## When planning to cross an ocean is it always best to use 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.