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Cancel HYDROLANT 1871/11 and this msg

Eastern South Atlantic · Angola · HYDROLANT 2264/11

issued: 2011-12-28 10:34Z
status: cancelled 2011-12-28 10:34Z (archive)
cancels: HYDROLANT 1871/11
authority: NAVAREA VII 249/11 280945Z DEC 11.
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

EASTERN SOUTH ATLANTIC.
ANGOLA.
CANCEL HYDROLANT 1871/11 AND THIS MSG.

Timeline

Survey operations in progress until further notice by M/V western neptune towing 4.3 mile long cables in…cancels · 2011-11-09
Survey operations in progress until further notice by M/V western neptune towing 4.3 mile long cables in…replaced · 2011-11-09

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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.