Surveys

Underwater operations in progress until further notice by M/V northern admiral vicinity of trackline joining…

HYDROLANT 2265/99

issued
1999-10-23 16:40Z
status
cancelled 1999-10-27 15:03Z (archive)
cancels
HYDROLANT 2176/99HYDROLANT 2253/99HYDROLANT 2233/99
authority
WZ 1894/99 231459Z OCT 99; WZ 1895/99 231546Z OCT 99; MRCC DELGADA 231306Z OCT 99
sea
North Sea
position
51.363, 2.574
source
nga_json · first seen 2026-08-17 13:38Z

Original warning text

1. UNDERWATER OPERATIONS IN PROGRESS UNTIL FURTHER NOTICE
   BY M/V NORTHERN ADMIRAL VICINITY OF TRACKLINE JOINING
   51-23N 002-29E, 51-22N 002-32E, 51-21N 002-40E.
   WIDE BERTH REQUESTED.
2. CANCEL HYDROLANT 2176/99, OPERATIONS SUSPENDED.
3. CANCEL HYDROLANT 2253/99(51), SEARCH SUSPENDED.
4. CANCEL HYDROLANT 2233/99.

This area · survey operations

462 within 180 nm since 1997 · 0 in the last 12 months · 0 in force now

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Season · when survey operations happen here

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month of issue, all years in the archive

Timeline

Nearby now · within 120 nm

Nothing else in force within 120 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.