Surveys

Underwater operations in progress until further notice vicinity of trackline between 51-48N 001-58E and…

HYDROLANT 1437/04

issued
2004-09-02 12:34Z
status
cancelled 2004-09-27 09:46Z (archive)
authority
WZ 1070/04 020516Z SEP 04.
sea
North Sea
position
51.850, 1.933
source
nga_json · first seen 2026-08-17 13:38Z

Original warning text

UNDERWATER OPERATIONS IN PROGRESS UNTIL
FURTHER NOTICE VICINITY OF TRACKLINE BETWEEN
51-48N 001-58E AND 51-54N 001-54E.
WIDE BERTH REQUESTED.

This area · survey operations

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

97
00
05
10
15
20
23

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

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.