Surveys
Underwater operations in progress until further notice by dsv orelia in 54-11.0N 001-24.8E
HYDROLANT 1761/99
- issued
- 1999-08-21 21:49Z
- status
- cancelled 1999-08-25 17:35Z (archive)
- authority
- WZ 1516/99 211002Z AUG 99
- sea
- North Sea
- position
- 54.183, 1.413
- source
- nga_json · first seen 2026-08-17 13:38Z
Original warning text
UNDERWATER OPERATIONS IN PROGRESS UNTIL FURTHER NOTICE BY DSV ORELIA IN 54-11.0N 001-24.8E. WIDE BERTH REQUESTED.
This area · survey operations
494 within 180 nm since 1997 · 0 in the last 12 months · 0 in force now
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- Survey operations in progress until 25 may by M/V ramform tethys towing 12 8000 meter long cables in area…2024-04-22
- 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 amazon conqueror towing 6500 meter long cables in…2023-08-18
- Survey operations in progress until further notice by M/V pxgeo 2 towing ten 4500 meter long cables in area…2023-08-16
- Survey operations in progress until further notice by M/V amazon conqueror towing 6500 meter long cables in…2023-07-18
- Survey operations in progress until further notice by M/V amazon conqueror towing eight 4700 meter long…2023-04-03
Season · when survey operations happen here
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month of issue, all years in the archive
Timeline
- Cancel HYDROLANT 1761/99 and this msg, operations completedcancelled by · 1999-08-25
Nearby now · within 120 nm
Nothing else in force within 120 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.