Surveys
Underwater operations in progress sunrise to sunset until 011700Z dec by M/V thalassa within 20 miles of: a.…
HYDROLANT 2574/99
- issued
- 1999-11-30 02:50Z
- status
- cancelled 1999-12-01 18:00Z (archive)
- self-cancels
- 1999-12-01 18:00Z
- cancels
- HYDROLANT 2562/99
- authority
- WZ 2127/99 300017Z NOV 99
- sea
- Celtic Sea
- position
- 48.983, -6.625
- source
- nga_json · first seen 2026-08-17 13:38Z
Original warning text
1. UNDERWATER OPERATIONS IN PROGRESS SUNRISE TO SUNSET UNTIL 011700Z DEC BY M/V THALASSA WITHIN 20 MILES OF: A. 49-30N 007-00W ON 30 NOV. B. 48-28N 006-15W ON 01 DEC. 2. CANCEL HYDROLANT 2562/99. 3. CANCEL THIS MSG 011800Z DEC.
This area · survey operations
787 within 180 nm since 1999 · 0 in the last 12 months · 0 in force now
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- Underwater operations 02 thru 11 oct by M/V atalante in area bound by 47-26.59N 006-34.33W, 46-52.40N…2023-09-29
- Survey operations in progress until 060001Z oct by M/V pourquoi pas in area bound by 47-17.05N 009-17.05W,…2023-09-25
- Survey operations 072201Z to 112159Z jun by vessel nanoplon in area within one mile of 48-20.67N 008-22.08W2023-06-06
- Survey operations 19 thru 25 apr in area bound by 48-00.00N 009-29.00W, 48-00.00N 007-56.00W, 46-54.00N…2023-04-17
- Scientific mooring established in 47-04.22N 003-19.86W until 27 mar2023-03-21
- Oceanographic equipment temporarily established 20 thru 28 mar by M/V reborn in 47-04.22N 003-19.86W2023-03-18
Season · when survey operations happen here
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month of issue, all years in the archive
Nearby now · within 120 nm
- Fowey light 50-19.60N 004-38.90W unreliableNav aids · 111.4 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.