Surveys
Underwater operations in progress until further notice by M/V monarch vicinity 51-11N 002-01E
HYDROLANT 856/01
- issued
- 2001-03-14 22:34Z
- status
- cancelled 2001-03-16 10:40Z (archive)
- cancels
- HYDROLANT 765/01
- authority
- WZ 620/01 142007Z MAR 01; WZ 619/01 141912Z MAR 01
- position
- 51.183, 2.017
- source
- nga_json · first seen 2026-08-17 13:38Z
Original warning text
1. UNDERWATER OPERATIONS IN PROGRESS UNTIL FURTHER NOTICE BY M/V MONARCH VICINITY 51-11N 002-01E. WIDE BERTH REQUESTED. 2. CANCEL HYDROLANT 765/01(36), AID RESTORED.
This area · survey operations
466 within 180 nm since 1997 · 0 in the last 12 months · 0 in force now
97
00
05
10
15
20
23
- 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
J
F
M
A
M
J
J
A
S
O
N
D
month of issue, all years in the archive
Timeline
- Fog signal at codling lanby 53-03N 005-41W unreliablecancels · 2001-03-07
- Fog signal at codling lanby 53-03N 005-41W unreliablereplaced · 2001-03-07
- HYDROLANT messages in force 161000Z mar 2001cancelled by · 2001-03-16
Nearby now · within 120 nm
Nothing else in force within 120 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.