Surveys
Underwater operations in progress until further notice by M/V stril explorer within 1.5 miles of 56-11.4N…
North Sea · HYDROLANT 577/12
- issued
- 2012-03-11 15:35Z
- status
- cancelled 2012-04-22 01:24Z (archive)
- authority
- NAVAREA I 46/12 111420Z MAR 12.
- sea
- North Sea
- position
- 56.190, 2.783 · r 1.5 nm
- source
- nga_json · first seen 2026-08-17 13:38Z
Original warning text
NORTH SEA. UNDERWATER OPERATIONS IN PROGRESS UNTIL FURTHER NOTICE BY M/V STRIL EXPLORER WITHIN 1.5 MILES OF 56-11.4N 002-47.0E. WIDE BERTH REQUESTED.
This area · survey operations
185 within 180 nm since 1999 · 1 in the last 12 months · 0 in force now
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- Survey operations in progress until further notice by M/V amazon conqueror towing eight 1609 meter long…2026-07-31
- Survey operations in progress until 25 may by M/V ramform tethys towing 12 8000 meter long cables in area…2024-04-22
- Survey operations in progress until further notice by M/V ramform atlas towing 14 6000 meter long cables in…2023-09-27
- Survey operations in progress until further notice by M/V kommandor towing 1300 meter long cables in area…2023-09-17
- Survey operations in progress until further notice by M/V ramform atlas towing 14 6000 meter long cables in…2023-09-04
- Survey operations in progress until further notice by M/V amazon conqueror towing 6500 meter long cables in…2023-08-18
Season · when survey operations happen here
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month of issue, all years in the archive
Timeline
- Cancel HYDROLANT 577/12 and this msg, operations completedcancelled by · 2012-04-22
Nearby now · within 120 nm
Nothing else in force within 120 nm.
Worldwide now
84 survey operations in force · see all
Surveys
Hydrographic and scientific survey vessels, often towing long arrays. All current survey operations →
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.