Surveys
Underwater operations in progress until further notice by unmanned submersible ALR4 in vicinity of trackline…
English Channel · Celtic Sea · England · HYDROLANT 1490/22
- issued
- 2022-06-10 00:29Z
- status
- cancelled 2022-06-15 16:21Z (archive)
- authority
- WZ 624/22 092301Z JUN 22.
- position
- 49.820, -5.704
- source
- nga_json · first seen 2026-08-17 13:38Z
Original warning text
ENGLISH CHANNEL. CELTIC SEA. ENGLAND. DNC 19, DNC 20. UNDERWATER OPERATIONS IN PROGRESS UNTIL FURTHER NOTICE BY UNMANNED SUBMERSIBLE ALR4 IN VICINITY OF TRACKLINE JOINING 49-46.90N 007-05.70W, 49-47.80N 005-13.10W, 49-54.80N 004-30.90W, 50-02.60N 004-21.80W. WIDE BERTH REQUESTED.
This area · survey operations
786 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 072201Z to 112159Z jun by vessel nanoplon in area within one mile of 48-20.67N 008-22.08W2023-06-06
- Survey operations 06 thru 11 jan by M/V belgica in area bound by 48-14.00N 005-05.00W, 47-28.00N 005-10.00W,…2023-01-04
- Underwater operations 180800Z to 192200Z nov by M/V willchallenge in vicinity of 50-19.0N 004-14.7W2022-11-17
- Survey operations 27 oct thru 02 nov 22 along trackline joining 48-04.62N 009-30.35W, 47-27.00N 008-32.00W,…2022-10-25
- Survey operations 18 thru 30 oct by M/V cotes de la manche in area bound by 47-43.95N 004-25.41W, 47-32.38N…2022-10-15
Season · when survey operations happen here
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month of issue, all years in the archive
Timeline
- Cancel HYDROLANT 1490/22 and this msg, operations completedcancelled by · 2022-06-15
Nearby now · within 120 nm
- Fowey light 50-19.60N 004-38.90W unreliableNav aids · 50.8 nm
Worldwide now
73 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.