Surveys

Survey operations in progress until further notice by M/V ramform vanguard towing 12 6500 meter long cables…

North Sea · HYDROLANT 1203/21

issued: 2021-05-01 02:25Z
status: cancelled 2021-05-24 15:12Z (archive)
cancels: HYDROLANT 1122/21
authority: NAVAREA I 57/21 010111Z MAY 21.
sea: North Sea
position: 59.547, 2.026
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

NORTH SEA.
DNC 20.
1. SURVEY OPERATIONS IN PROGRESS UNTIL FURTHER
   NOTICE BY M/V RAMFORM VANGUARD TOWING
   12 6500 METER LONG CABLES IN AREA BOUND BY
   59-25.3N 001-40.0E, 59-42.0N 001-51.0E,
   59-44.9N 002-05.7E, 59-41.9N 002-23.2E,
   59-19.2N 002-07.3E.
   FIVE MILE BERTH REQUESTED.
2. CANCEL HYDROLANT 1122/21.

This area · survey operations

156 within 180 nm since 1999 · 3 in the last 12 months · 3 in force now

Season · when survey operations happen here

month of issue, all years in the archive

Timeline

Survey operations in progress until further notice by M/V ramform vanguard towing 12 6500 meter long cables…cancels · 2021-04-23
Survey operations in progress until further notice by M/V ramform vanguard towing 12 6500 meter long cables…replaced · 2021-04-23
Survey operations in progress until further notice by M/V ramform vanguard towing 12 6500 meter long cables…cancelled by · 2021-05-24

Nearby now · 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.