Basic Terrestrial Navigation part 3

welcome to Marine Courses Center today we will complete Introduction to Navigation & Navigation Meaning & Navigation Definition

• Basic Terrestrial Navigation part 1
• Basic Terrestrial Navigation part 2
• Ships’ Manning | catering department | seamanship | part 5
• Ships’ Manning | deck officer | Maritime Deck department | seamanship | part 3

1.5.4 Difference of latitude (d.lat.) IN BASIC TERRESTRIAL NAVIGATION :

·         Same names                                                     subtract

·         Opposite names                                                add.

In northern hemisphere:

Ø  D.lat. will be named SOUTH (S) if the ship is moving from a greater latitude (N) to a smaller latitude (N).

Ø  D.lat. will be named NORTH (N) if the ship is moving from a smaller latitude (N) to a  greater latitude (N).

In southern hemisphere:

Ø  D.lat. will be named NORTH (N) if the ship is moving from a greater latitude (S) to a smaller latitude (S).

Ø  D.lat. will be named SOUTH (S) if the ship is moving from a  smaller latitude (S) to a greater latitude (S).

Ø  If both latitudes have opposite names, d.lat. will have the same sign as the arrival  latitude.

1.5.5 Difference of longitude (d.long.) IN BASIC TERETRIAL NAVIGATION:

In Eastern hemisphere:

Ø  D.long. will be named EAST (E) if the ship is moving from a smaller meridian (E) to a  greater meridian (E).

Ø  D.long. will be named WEST (W) if the ship is moving from a greater meridian (E) to a  smaller meridian (E).

In Western hemisphere:

Ø  D.long. will be named EAST (E) if the ship is moving from a greater meridian (W) to a  smaller meridian (W).

Ø  D.long. will be named WEST (W) if the ship is moving from a smaller meridian (W) to a  greater meridian (W).