Termify logo Protermify Maritime Maritime English glossary for maritime professionals and learners.

Nav

Ligne d’indexation parallèle

A radar-derived reference line drawn parallel to the vessel's intended track, used to monitor cross-track error by keeping a chosen land echo or seamark at a constant offset.

Quick answer: A radar-derived reference line drawn parallel to the vessel's intended track, used to monitor cross-track error by keeping a chosen land echo or seamark at a constant offset.

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

Languages

ArabicDeutschEnglishEspanolFrancaisHindiBahasa IndonesiaItalianoJapanesePortuguesRusskiyThaiTurkceVietnameseZhongwen

Quick answer

A radar-derived reference line drawn parallel to the vessel's intended track, used to monitor cross-track error by keeping a chosen land echo or seamark at a constant offset.

Why it matters

Ligne d’indexation parallèle 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

This page is rendered as static HTML from source-backed terminology data so search engines and AI systems can parse the content without client-side code.

Questions and answers

Questions and answers

What is Ligne d’indexation parallèle?

In this glossary, Ligne d’indexation parallèle refers to: A radar-derived reference line drawn parallel to the vessel's intended track, used to monitor cross-track error by keeping a chosen land echo or seamark at a constant offset.

How is Ligne d’indexation parallèle used in maritime?

In maritime communication, this term appears in contexts such as: "Pilote : maintenez la ligne d’indexation parallèle tribord à un câble de la courbe des 20 m ; corrigez au gouvernail pour garder l’écart constant."

Why does Ligne d’indexation parallèle matter in maritime?

Ligne d’indexation parallèle 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 Ligne d’indexation parallèle?

Ligne d’indexation parallèle is mainly used by Deck Officers, Engine Officers, and Masters.

What category does Ligne d’indexation parallèle belong to?

In this glossary, Ligne d’indexation parallèle 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

A radar-derived reference line drawn parallel to the vessel's intended track, used to monitor cross-track error by keeping a chosen land echo or seamark at a constant offset.

Operational example

Pilot: Keep the starboard parallel index line one cable off the 20-metre contour; adjust rudder as necessary to maintain constant offset.

Localized term

Ligne d’indexation parallèle

Localized example

Pilote : maintenez la ligne d’indexation parallèle tribord à un câble de la courbe des 20 m ; corrigez au gouvernail pour garder l’écart constant.

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.

Back to glossary

Termify Get Termify on the App Store OPEN
AI Free AI Search Source-backed aviation answers