Surveys

Underwater operations 27 jan thru 11 mar by M/V pourquoi pas with submersible in area between 21-10N 26-20N…

North Atlantic · HYDROLANT 237/18

issued: 2018-01-22 05:45Z
status: cancelled 2018-01-22 06:11Z (archive)
authority: POURQUOI PAS 181327Z JAN 18.
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

NORTH ATLANTIC.
DNC 01.
1. UNDERWATER OPERATIONS 27 JAN THRU 11 MAR
   BY M/V POURQUOI PAS WITH SUBMERSIBLE IN
   AREA BETWEEN 21-10N 26-20N AND 044-40W 046-40W.
   TWO MILE BERTH REQUESTED.
2. CANCEL THIS MSG 12 MAR 18.

Timeline

Cancel HYDROLANT 237/18 and this msgcancelled by · 2018-01-22

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.