Surveys

Underwater operations in progress until further notice by M/V deep helder vicinity of trackline between…

Southern North Sea · HYDROLANT 1413/16

issued
2016-06-09 10:09Z
status
cancelled 2016-06-10 20:22Z (archive)
cancels
HYDROLANT 1394/16
authority
WZ 715/16 090841Z JUN 16.
sea
North Sea
position
51.308, 2.092
source
nga_json · first seen 2026-08-17 13:38Z

Original warning text

SOUTHERN NORTH SEA.
DNC 20, DNC 21.
1. UNDERWATER OPERATIONS IN PROGRESS
   UNTIL FURTHER NOTICE BY M/V DEEP HELDER
   VICINITY OF TRACKLINE BETWEEN
   51-19N 001-56E AND 51-18N 002-15E.
   WIDE BERTH REQUESTED.
2. CANCEL HYDROLANT 1394/16.

This area · survey operations

472 within 180 nm since 1997 · 0 in the last 12 months · 0 in force now

97
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23

Season · when survey operations happen here

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month of issue, all years in the archive

Timeline

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.