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Variation du compas magnétique

The angular difference between true north and magnetic north, affecting compass readings on board ships.

Quick answer: The angular difference between true north and magnetic north, affecting compass readings on board ships.

This term page is part of the Protermify Maritime glossary and is published as static HTML for fast indexing and clear language coverage.

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Quick answer

The angular difference between true north and magnetic north, affecting compass readings on board ships.

Why it matters

Variation du compas magnétique matters because it supports clear communication in Nav contexts for Deck Officers, Engine Officers, and Masters. It also connects to aviation training and exam language such as STCW, Marlins Test, ISF Watchkeeper, and GMDSS.

Editorial context

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Questions and answers

Questions and answers

What is Variation du compas magnétique?

In this glossary, Variation du compas magnétique refers to: The angular difference between true north and magnetic north, affecting compass readings on board ships.

How is Variation du compas magnétique used in maritime?

In maritime communication, this term appears in contexts such as: "Signalez la variation et la déviation du compas magnétique pour la position actuelle avant d’entrer dans les eaux de pilotage conformément aux instructions du VTS."

Why does Variation du compas magnétique matter in maritime?

Variation du compas magnétique matters because it supports clear communication in Nav contexts for Deck Officers, Engine Officers, and Masters. It also connects to aviation training and exam language such as STCW, Marlins Test, ISF Watchkeeper, and GMDSS.

Who uses Variation du compas magnétique?

Variation du compas magnétique is mainly used by Deck Officers, Engine Officers, and Masters.

What category does Variation du compas magnétique belong to?

In this glossary, Variation du compas magnétique is grouped under Nav. Related pages in this category explain adjacent procedures, commands and operational concepts.

Where does this definition come from?

This definition is sourced from IMO SMCP, STCW Convention, SOLAS, COLREG and published by Protermify Maritime as a static maritime reference page.

Definition

The angular difference between true north and magnetic north, affecting compass readings on board ships.

Operational example

Report magnetic compass variation and deviation for current position before entering pilotage waters as per VTS instructions.

Localized term

Variation du compas magnétique

Localized example

Signalez la variation et la déviation du compas magnétique pour la position actuelle avant d’entrer dans les eaux de pilotage conformément aux instructions du VTS.

Definition language

English reference definition

Source

IMO SMCP, STCW Convention, SOLAS, COLREG

Category

Nav

Exam relevance

  • STCW
  • Marlins Test
  • ISF Watchkeeper
  • GMDSS

Target audience

  • Deck Officers
  • Engine Officers
  • Masters

Related terms

Use the related links below to continue through connected maritime terminology.

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