Surveys
Submarine research operations in progress during daylight hours until 25 mar by M/V prince madog with…
HYDROLANT 434/04
- issued
- 2004-03-17 17:40Z
- status
- cancelled 2004-03-26 00:00Z (archive)
- cancels
- HYDROLANT 353/04
- authority
- 1. WZ 393/04 171306Z MAR 04 2. WZ 394/04 171532Z MAR 04
- sea
- North Sea
- position
- 51.348, 1.771
- source
- nga_json · first seen 2026-08-17 13:38Z
Original warning text
1. SUBMARINE RESEARCH OPERATIONS IN PROGRESS DURING DAYLIGHT HOURS UNTIL 25 MAR BY M/V PRINCE MADOG WITH SUBMERSIBLE IN AREA BOUND BY 51-17.8N 001-47.5E, 51-23.0N 001-50.0E, 51-23.9N 001-45.0E, 51-18.8N 001-42.5E. WIDE BERTH REQUESTED. 2. CANCEL HYDROLANT 353/04(37), AID RESTORED. 3. CANCEL THIS MSG 26 MAR.
This area · survey operations
477 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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M
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month of issue, all years in the archive
Timeline
- Vergoyer southwest buoy 50-27N 001-00E unlitcancels · 2004-03-01
- Vergoyer southwest buoy 50-27N 001-00E unlitreplaced · 2004-03-01
Nearby now · within 120 nm
Nothing else in force within 120 nm.
Worldwide now
83 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.