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Light Sector Initial Limit (LSI)

DGIF baseline 2026-1, the latest. Earlier baselines: timemap.

RDF: lsi.ttl

Name

lightSectorInitialLimit

Datatype

Integer0to359

Definition

The initial angular limit of visibility of a light sector expressed as a bearing from seaward to the central object.

Description

The order of sector initial limit and sector terminal limit is clockwise around the central object. The bearing direction conforms with the method used in 'List of Lights' publications.

Accepted

2013-10-18

Defined by

DFDD

Physical quantity

planeAngle

Recommended unit

Arc Degree

Used by

• BC060 Light Sector

Source: DGIF 2026-1 QEA model, DGIWG. Standard: DGIWG 206-3. Licence: CC BY 4.0, © DGIWG.