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Navigation & chartwork

What does an EBL measure?

Short answer

Direction from its origin through a target

An EBL supplies direction from its selected origin; the measurement is incomplete until relative/compass reference and origin are known. Revisit VRM and EBL.

Sources and scope

Reviewed by Richard Moore on . This answer is scoped to international collision-avoidance and small-craft radar practice; check the current chart, publication, local rules and official operational guidance before acting afloat.

Quick check

What does an EBL measure?