Surveys
Underwater operations in progress until further notice by M/V grey mammoth: a. within 1.5 miles of 53-59.5N…
HYDROLANT 340/04
- issued
- 2004-02-28 03:47Z
- status
- cancelled 2004-04-20 17:54Z (archive)
- authority
- WZ 308/04 280223Z FEB 04
- sea
- Irish Sea and St. George's Channel
- position
- 53.992, -3.308
- source
- nga_json · first seen 2026-08-17 13:38Z
Original warning text
UNDERWATER OPERATIONS IN PROGRESS UNTIL FURTHER NOTICE BY M/V GREY MAMMOTH: A. WITHIN 1.5 MILES OF 53-59.5N 003-18.5W. B. ALONG TRACKLINE JOINING 53-59.2N 003-16.1W, 53-57.7N 003-06.3W, 53-58.5N 003-01.2W, 54-01.4N 002-56.1W. WIDE BERTH REQUESTED.
This area · survey operations
397 within 180 nm since 1999 · 0 in the last 12 months · 0 in force now
99
00
05
10
15
20
24
- 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 sw bly towing four 2300 meter long cables, marked…2022-05-08
- Survey operations in progress until further notice by M/V sw bly towing four 2300 meter long cables, marked…2022-04-17
- Survey operations in progress until further notice by M/V ramform hyperion towing nine 3700 meter long…2022-04-15
- Survey operations in progress until further notice by S/V ocean resolution in area bound by 54-05.6N…2021-08-26
- Survey operations in progress until further notice by M/V ocean resolution in area bound by 54-05.6N…2021-08-02
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
- Cancel HYDROLANT 340/04 and this msg, operations completedcancelled by · 2004-04-20
Nearby now · within 120 nm
- Mew island light 54-41.90N 005-30.80W unreliableNav aids · 88.1 nm
- Mf dsc and r/t services off air at: a. bawdsey 51-59.60N 001-24.50ENav aids · 101.4 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.