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磁気コンパス変動

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

磁気コンパス変動 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 磁気コンパス変動?

In this glossary, 磁気コンパス変動 refers to: The angular difference between true north and magnetic north, affecting compass readings on board ships.

How is 磁気コンパス変動 used in maritime?

In maritime communication, this term appears in contexts such as: "パイロット水域に入る前に、現在位置の磁気コンパス変動と偏差をVTSの指示に従って報告してください。"

Why does 磁気コンパス変動 matter in maritime?

磁気コンパス変動 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 磁気コンパス変動?

磁気コンパス変動 is mainly used by Deck Officers, Engine Officers, and Masters.

What category does 磁気コンパス変動 belong to?

In this glossary, 磁気コンパス変動 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

磁気コンパス変動

Localized example

パイロット水域に入る前に、現在位置の磁気コンパス変動と偏差をVTSの指示に従って報告してください。

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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