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2 Cones Point to Point (TZP_10)

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

RDF: tzp_10.ttl

Name
twoConesPointToPoint
Attribute
TZP Topmark Shape
Definition
Two cones, one above the other, with their vertices together in the centre.
Description
A cone is a solid figure generated by straight lines drawn from a fixed point (the vertex) to a circle in a plane not containing the vertex. The International Association of Lighthouse Authorities (IALA) uses two cones, point to point, as a west cardinal mark.
Accepted
2013-10-18
Allowed for

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