Surveys

Underwater operations in progress until further notice by M/V siren between 50-22N 005-59W and 50-06N 005-43W

HYDROLANT 303/00

issued
2000-01-27 01:44Z
status
cancelled 2000-01-27 13:28Z (archive)
authority
WZ 176/00 270106Z JAN 00
position
50.233, -5.850
source
nga_json · first seen 2026-08-17 13:38Z

Original warning text

UNDERWATER OPERATIONS IN PROGRESS UNTIL FURTHER NOTICE
BY M/V SIREN BETWEEN 50-22N 005-59W AND 50-06N 005-43W.
WIDE BERTH REQUESTED.

This area · survey operations

754 within 180 nm since 1999 · 0 in the last 12 months · 0 in force now

99
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

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.