Surveys
Underwater operations in progress until further notice by M/V northern admiral vicinity of trackline between…
HYDROLANT 2161/99
- issued
- 1999-10-09 10:29Z
- status
- cancelled 1999-10-11 10:05Z (archive)
- cancels
- HYDROLANT 2141/99
- authority
- WZ 1821/99 090828Z OCT 99
- sea
- North Sea
- position
- 51.367, 1.667
- source
- nga_json · first seen 2026-08-17 13:38Z
Original warning text
1. UNDERWATER OPERATIONS IN PROGRESS UNTIL FURTHER NOTICE BY M/V NORTHERN ADMIRAL VICINITY OF TRACKLINE BETWEEN 51-21N 001-33E AND 51-23N 001-47E. 2. CANCEL HYDROLANT 2141/99.
This area · survey operations
480 within 180 nm since 1997 · 0 in the last 12 months · 0 in force now
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- Survey operations in progress until further notice by M/V mintaka I in vicinity of trackline joining…2023-08-06
- Survey operations 15 sept thru 20 oct by M/V thlassa in vicinity of trackline joining 48-30.00N 006-00.00W,…2022-09-14
- Underwater operations in progress until further notice by M/V uilenspiegel and c/s responder in vicinity of…2022-07-18
- Survey operations in progress until further notice by M/V nora b in vicinity of trackline joining 51-22.80N…2022-07-16
- Survey operations in progress until further notice by M/V nora b in vicinity of trackline joining 50-46.80N…2022-07-12
- Underwater operations in progress until further notice by M/V uilenspiegel in vicinity of trackline joining…2022-07-09
Season · when survey operations happen here
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month of issue, all years in the archive
Timeline
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.