Surveys

Survey operations in progress until further notice by M/V ramform sovereign towing 10050 meter long cables…

Eastern South Atlantic · HYDROLANT 4079/18

issued: 2018-12-31 09:48Z
status: cancelled 2019-01-25 13:47Z (archive)
cancels: HYDROLANT 3978/18
authority: NAVAREA VII 388/18 310947Z DEC 18.
position: -6.082, 10.686
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

EASTERN SOUTH ATLANTIC.
DNC 01.
1. SURVEY OPERATIONS IN PROGRESS UNTIL FURTHER
   NOTICE BY M/V RAMFORM SOVEREIGN TOWING
   10050 METER LONG CABLES IN AREA BOUND BY
   05-57.26S 010-30.43E, 05-57.48S 010-52.22E,
   06-12.63S 010-51.94E, 06-12.19S 010-29.87E.
   SEVEN MILE BERTH REQUESTED.
2. CANCEL HYDROLANT 3978/18.

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 sovereign towing 10050 meter long cables…cancels · 2018-12-21
Survey operations in progress until further notice by M/V ramform sovereign towing 10050 meter long cables…replaced · 2018-12-21
HYDROLANT warnings in force as of 251344Z jan 19cancelled by · 2019-01-25

Nearby now · within 120 nm

Survey operations in progress until further notice by M/V ramform victory towing 12 three mile long cables…Surveys · 28.9 nm
Survey operations in progress until 22 aug by cableship nautilus in: a. 06-16.56S 011-14.56ECable ops · 30.2 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.