Surveys

Survey operations in progress until 25 may by M/V ramform tethys towing 12 8000 meter long cables in area…

North Sea · HYDROLANT 858/24

issued
2024-04-22 18:12Z
status
cancelled 2024-05-26 00:01Z (archive)
self-cancels
2024-05-26 00:01Z
authority
RAMFORM TETHYS 0/24 221803Z APR 24.
position
56.770, 0.686
source
nga_json · first seen 2026-08-17 13:38Z

Original warning text

NORTH SEA.
DNC 20.
 1. SURVEY OPERATIONS IN PROGRESS UNTIL 25 MAY BY
   M/V RAMFORM TETHYS TOWING 12 8000 METER LONG CABLES
   IN AREA BOUND BY
   057-12.85N 000-00.98E, 057-14.37N 001-18.42E,
   056-19.42N 001-21.00E, 056-18.08N 000-04.23E.
   SIX MILE BERTH REQUESTED.
2. CANCEL THIS MSG 260001Z MAY 24.

This area · survey operations

185 within 180 nm since 1999 · 2 in the last 12 months · 2 in force now

99
00
05
10
15
20
25
26

Season · when survey operations happen here

J
F
M
A
M
J
J
A
S
O
N
D

month of issue, all years in the archive

Nearby now · within 120 nm

Nothing else in force within 120 nm.

Worldwide now

73 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.