Surveys

Underwater operations in progress until 28 mar vicinity 05-01.4N 009-51.8W

Gulf of Guinea · Liberia · HYDROLANT 173/13

issued: 2013-01-19 14:33Z
status: cancelled 2013-03-13 17:04Z (archive)
authority: NAVAREA II 22/13 191124Z JAN 13.
sea: North Atlantic Ocean
position: 5.023, -9.863
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

GULF OF GUINEA.
LIBERIA.
1. UNDERWATER OPERATIONS IN PROGRESS UNTIL 28 MAR
   VICINITY 05-01.4N 009-51.8W.
   WIDE BERTH REQUESTED.
2. CANCEL THIS MSG 29 MAR 13.

This area · survey operations

2 within 180 nm since 2013 · 0 in the last 12 months · 0 in force now

Underwater operations in progress until further notice by M/V west saturn in 05-32.52N 010-46.32W2016-11-22

Season · when survey operations happen here

month of issue, all years in the archive

Timeline

Cancel HYDROLANT 173/13 and this msg, operations completedcancelled by · 2013-03-13

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.