Surveys
Underwater operations in progress until further notice by M/V havila reel within one mile of 51-22.5N…
HYDROLANT 1736/01
- issued
- 2001-06-15 19:27Z
- status
- cancelled 2001-06-17 14:36Z (archive)
- authority
- WZ 1294/01 151848Z JUN 01
- sea
- Bristol Channel
- position
- 51.375, -4.312 · r 1.0 nm
- source
- nga_json · first seen 2026-08-17 13:38Z
Original warning text
UNDERWATER OPERATIONS IN PROGRESS UNTIL FURTHER NOTICE BY M/V HAVILA REEL WITHIN ONE MILE OF 51-22.5N 004-18.7W. WIDE BERTH REQUESTED.
This area · survey operations
762 within 180 nm since 1999 · 0 in the last 12 months · 0 in force now
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- Survey operations in progress until further notice by M/V sw amundsen towing seven 2200 meter long cables in…2024-04-18
- Survey operations in progress until further notice by M/V mintaka I in vicinity of trackline joining…2023-08-06
- 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
Season · when survey operations happen here
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month of issue, all years in the archive
Timeline
- Underwater operations in progress until further notice by M/V havila reel vicinity 51-02N 004-59Wcancelled by · 2001-06-17
Nearby now · within 120 nm
- Fowey light 50-19.60N 004-38.90W unreliableNav aids · 64.2 nm
Worldwide now
86 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.