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Cancel HYDROLANT 1711/11 and this msg, survey completed

Southern North Sea · England-east Coast · HYDROLANT 1724/11

issued: 2011-10-20 05:31Z
status: cancelled 2011-10-20 05:31Z (archive)
cancels: HYDROLANT 1711/11
authority: NAVAREA I 288/11 200450Z OCT 11.
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

SOUTHERN NORTH SEA.
ENGLAND-EAST COAST.
CANCEL HYDROLANT 1711/11 AND THIS MSG, SURVEY COMPLETED.

Timeline

Seismic survey in progress until further notice by M/V geo caspian towing ten 9000 meter long cables in area…cancels · 2011-10-18
Seismic survey in progress until further notice by M/V geo caspian towing ten 9000 meter long cables in area…replaced · 2011-10-18

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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.