Surveys

Underwater operations in progress until 280800Z jul by submersible in area between 53-57N 54-04N and 000-05W…

North Sea · England-east Coast · HYDROLANT 2131/17

issued: 2017-07-10 06:18Z
status: cancelled 2017-07-18 14:31Z (archive)
self-cancels: 2017-07-28 09:00Z
authority: WZ 813/17 100430Z JUL 17.
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

NORTH SEA.
ENGLAND-EAST COAST.
DNC 20.
1. UNDERWATER OPERATIONS IN PROGRESS UNTIL
   280800Z JUL BY SUBMERSIBLE IN AREA BETWEEN
   53-57N 54-04N AND 000-05W 000-05E.
   WIDE BERTH REQUESTED.
2. CANCEL THIS MSG 280900Z JUL 17.

Timeline

Cancel HYDROLANT 2131/17 and this msgcancelled by · 2017-07-18

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.