Surveys

Survey operations in progress until further notice by M/V ramform vanguard towing 14 4500 meter long cables…

Eastern South Atlantic · Angola · HYDROLANT 458/23

issued: 2023-02-27 19:49Z
status: cancelled 2023-03-28 14:21Z (archive)
cancels: HYDROLANT 42/23
authority: NAVAREA VII 61/23 271944Z FEB 23.
position: -7.258, 11.393
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

EASTERN SOUTH ATLANTIC.
ANGOLA.
DNC 01.
1. SURVEY OPERATIONS IN PROGRESS UNTIL
   FURTHER NOTICE BY M/V RAMFORM VANGUARD
   TOWING 14 4500 METER LONG CABLES
   IN AREA BOUND BY
   07-06.00S 011-26.00E, 07-10.00S 011-25.00E,
   07-10.00S 011-16.00E, 07-24.00S 011-24.00E,
   07-21.00S 011-29.00E.
   THREE MILE BERTH REQUESTED.
2. CANCEL HYDROLANT 42/23.

This area · survey operations

72 within 180 nm since 2003 · 1 in the last 12 months · 1 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 · 2023-01-05
Survey operations in progress until further notice by M/V ramform vanguard towing 12 6500 meter long cables…replaced · 2023-01-05
Survey operations 30 mar until further notice by M/V ramform vanguard towing ten 8000 meter long cables in…cancelled by · 2023-03-28

Nearby now · within 120 nm

Survey operations in progress until 22 aug by cableship nautilus in: a. 06-16.56S 011-14.56ECable ops · 56.8 nm
Survey operations in progress until further notice by M/V ramform victory towing 12 three mile long cables…Surveys · 61.2 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.