Surveys
Survey operations in progress until further notice by M/V ridley thomas along trackline joining 50-49N…
Celtic Sea · Bristol Channel · England · HYDROLANT 2521/20
- issued
- 2020-08-14 16:41Z
- status
- cancelled 2020-08-18 14:53Z (archive)
- authority
- WZ 858/20 141636Z AUG 20.
- position
- 50.825, -5.500
- source
- nga_json · first seen 2026-08-17 13:38Z
Original warning text
CELTIC SEA. BRISTOL CHANNEL. ENGLAND. DNC 19, DNC 20. SURVEY OPERATIONS IN PROGRESS UNTIL FURTHER NOTICE BY M/V RIDLEY THOMAS ALONG TRACKLINE JOINING 50-49N 006-26W, 50-50N 004-34W. ONE MILE BERTH REQUESTED.
This area · survey operations
735 within 180 nm since 1999 · 0 in the last 12 months · 0 in force now
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- Survey operations in progress until 20 jul by M/V celtic explorer in vicinity of trackline joining 47-30.00N…2023-06-14
- Underwater operations 180800Z to 192200Z nov by M/V willchallenge in vicinity of 50-19.0N 004-14.7W2022-11-17
- 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
- Survey operations in progress until 10 sep by M/V laperouse and M/V borda along trackline joining 48-27.48N…2022-09-01
- Underwater operations in progress until further notice by unmanned submersible ALR4 in vicinity of trackline…2022-06-10
- Underwater operations in progress until further notice by submersible in vicinity of trackline joining…2022-05-10
Season · when survey operations happen here
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month of issue, all years in the archive
Timeline
- Cancel HYDROLANT 2521/20 and this msg, operations completedcancelled by · 2020-08-18
Nearby now · within 120 nm
- Fowey light 50-19.60N 004-38.90W unreliableNav aids · 44.2 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.