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Cancel HYDROLANT 566/13 and this msg

Gulf of Guinea · Liberia · HYDROLANT 2123/13

issued: 2013-08-31 16:30Z
status: cancelled 2013-08-31 16:30Z (archive)
cancels: HYDROLANT 566/13
authority: NAVAREA II 237/13 311609Z AUG 13.
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

GULF OF GUINEA.
LIBERIA.
CANCEL HYDROLANT 566/13 AND THIS MSG.

Timeline

Seismic survey in progress until further notice by M/V polarcus asima towing 12 1000 meter long cables in…cancels · 2013-03-04
Seismic survey in progress until further notice by M/V polarcus asima towing 12 1000 meter long cables in…replaced · 2013-03-04

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Not for navigation. This is a re-rendering of an official navigational warning for awareness; mariners must use official NAVAREA broadcasts and their national MSI service.