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津航警51/26

3D seismic survey in Bohai Sea, 15 Feb to 30 Sep - 0.5 nm exclusion around operating vessels

No longer in forceReceived 14 Feb 2026, 11:37 UTCArchived 01 Oct 2026, 13:12 UTC

Warning text

Positions open on the map
TJ21/26 BOHAI SEA OPERATION OF 3D SEISMIC ACQUISITION PROJECT CARRIED OUT IN AREA BOUNDED BY THE LINES JOINING 38-44.55N 118-55.01E,38-51.17N 119-16.17E,38-49.62N 119-16.87E,38-50.50N 119-20.05E,38-48.24N 119-22.89E AND 38-35.45N 119-06.45E FROM 150000 UTC FEB TO 301600 UTC SEP.ENTERING PROHIBITED IN AREA WITHIN 0.5 NAUTICAL MILES RADIUS OF THE OPERATING VESSEL.CAUTION ADVISED.TIANJIN MSA CHINA.

Analysis

No longer in force

A 3D seismic acquisition project will be carried out in a polygonal area in the Bohai Sea. The operation runs from 15 Feb 08:00 to 30 Sep 24:00 (times as given). During operations a circular safety zone of 0.5 nautical miles radius around the operating vessel is established and entry is prohibited. Mariners are advised to exercise caution.

Type
Survey operations · severity moderate
Feed
Survey operationsAll warnings of this kind on the map, or as an API feed.
Location
Bohai Sea, area bounded by six points given in message
Validity
From 15 Feb 2026, 08:00 UTC
Until 01 Oct 2026, 00:00 UTC2月15日0800时至9月30日2400时
Activity periods
  • 15 Feb 2026, 08:00 UTC - 01 Oct 2026, 00:00 UTC (3D seismic acquisition operations (times given as in message))
Hazards
3D seismic survey, survey operations, safety exclusion zone around operating vessel

Worked out automatically from the warning text on 30 Sept 2026, 01:29 UTC. It can be wrong: the official warning text is the authority.

The whole analysis comes with Lagom

This warning's analysis also has:

  • Action for mariners
  • Keep-clear distance
  • Ships named
  • Translations
  • Nearby lights and rescue centres

The action for mariners, the keep-clear distance, contacts, ships named, translations and the nearby lights and rescue centres come with Lagom and every higher plan, and with the API plans. The official warning text above is always free.

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