Concept information
Preferred term

Created: 2026-04-16T13:33:22
Definition
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In the context of the Law of the Sea and maritime delimitation, line from which the breadth of the maritime zones under national jurisdiction is measured. From this line are measured the outer limits of a State's territorial sea, contiguous zone, the exclusive economic zone and the continental shelf. Hence the term "territorial sea baseline (TSB)", used in some legal and technical literature. The baseline is also the limiting line for internal waters.
(en)Created: 4/16/26
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La ligne de base est la ligne séparant les eaux intérieures d'un État et sa mer territoriale. Elle correspond habituellement à la laisse de basse mer, telle qu'elle est indiquée sur les cartes marines officielles de l'État côtier, et suit donc la ligne du zéro hydrographique. La ligne de base est aussi le support de la mesure des autres formes de juridiction portant sur les espaces maritimes, particulièrement celles instituées par la Convention de Montego Bay, telles que les zones économiques exclusives ou les extensions au plateau continental.
(fr) -
В морском праве — условная линия, от которой отмеряется ширина территориального моря, а опосредованно — и ширина других морских зон, например исключительной экономической зоны.
(ru)Created: 4/16/26
Broader concept
- maritime boundaries (en)
Entry terms
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territorial sea baselines (en)Created: 2026-04-16T13:51:45
Scope note
- Scope note added: Not to be confused with benchmarks (reference points) or baselines on vessels (the horizontal line intersecting at amidships the keel line) or baselines in fire management (the initial line of fire). (en)
In other languages
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خط القاعدةCreated: 2026-04-16T14:02:23
Arabic
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خط أساس البحر الإقليميCreated: 2026-04-16T14:14:32
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基线Created: 2026-04-16T14:02:23
Chinese
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领海基线Created: 2026-04-16T14:14:31
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základní linieCreated: 2026-05-04T13:46:58
Czech
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basislijnenCreated: 2026-04-16T14:20:44
Dutch
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ligne de baseCreated: 2026-04-16T13:56:01
French
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ligne de base de la mer territorialeCreated: 2026-04-16T14:14:30
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grunnlinjerCreated: 2026-04-16T14:20:44
Norwegian Bokmål
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Linia podstawowaCreated: 2026-04-16T14:20:45
Polish
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linha de baseCreated: 2026-04-16T14:20:45
Portuguese
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linha de base do mar territorialCreated: 2026-04-16T14:23:29
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исходная линияCreated: 2026-04-16T14:00:27
Russian
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исходная линия территориального моряCreated: 2026-04-16T14:14:31
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Línea de baseCreated: 2026-04-16T14:00:26
Spanish
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Línea de base del mar territorialCreated: 2026-04-16T14:14:31
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baslinjerCreated: 2026-04-16T14:24:35
Swedish
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esas hatCreated: 2026-04-28T14:02:59
Turkish
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karasuları temel hattıCreated: 2026-04-28T14:30:07