Surveys

Underwater operations in progress until further notice by M/V rio supporter vicinity 05-00N 004-32W

HYDROLANT 1972/02

issued
2002-09-04 14:42Z
status
cancelled 2002-10-01 06:40Z (archive)
cancels
HYDROLANT 1945/02
authority
NAVAREA II 309/02 040820Z SEP 02; WZ 1377/02 040832Z SEP 02
sea
Gulf of Guinea
position
5.000, -4.533
source
nga_json · first seen 2026-08-17 13:38Z

Original warning text

1. UNDERWATER OPERATIONS IN PROGRESS UNTIL FURTHER NOTICE BY
   M/V RIO SUPPORTER VICINITY 05-00N 004-32W. WIDE BERTH REQUESTED.
2. CANCEL HYDROLANT 1945/02(35), AID RESTORED.

This area · survey operations

17 within 180 nm since 2002 · 0 in the last 12 months · 0 in force now

02
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

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.