Surveys

Survey operations in progress until further notice by M/V ramform vanguard towing 12 6000 meter long cables…

North Sea · HYDROLANT 3003/17

issued: 2017-09-24 01:16Z
status: cancelled 2017-10-30 22:45Z (archive)
authority: NAVAREA I 135/17 232325Z SEP 17.
sea: North Sea
position: 55.336, 3.976
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

NORTH SEA.
DNC 21.
SURVEY OPERATIONS IN PROGRESS UNTIL FURTHER NOTICE
BY M/V RAMFORM VANGUARD TOWING 12 6000 METER LONG
CABLES IN AREA BOUND BY
55-39N 003-47E, 55-24N 003-22E,
55-00N 004-10E, 55-19N 004-34E.
FIVE MILE BERTH REQUESTED.

This area · survey operations

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

Season · when survey operations happen here

month of issue, all years in the archive

Timeline

Cancel HYDROLANT 3003/17 and this msg, survey completedcancelled by · 2017-10-30

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.