Surveys

Survey operations in progress until 07 may by M/V ramform sterling towing 4.3 milie long cable in area bound…

Eastern South Atlantic · Angola · HYDROLANT 903/17

issued: 2017-03-20 11:28Z
status: cancelled 2017-05-02 09:51Z (archive)
authority: NAVAREA VII 75/17 200831Z MAR 17.
sea: South Atlantic Ocean
position: -7.154, 11.196
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 07 MAY BY
   M/V RAMFORM STERLING TOWING 4.3 MILIE LONG CABLE
   IN AREA BOUND BY
   07-20.14S 011-03.14E, 07-12.57S 010-58.34E,
   06-58.40S 011-20.46E, 07-05.56S 011-25.29E.
   FIVE MILE BERTH REQUESTED.
2. CANCEL THIS MSG 08 MAY 17.

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

Cancel HYDROLANT 903/17 and this msgcancelled by · 2017-05-02

Nearby now · within 120 nm

Survey operations in progress until 22 aug by cableship nautilus in: a. 06-16.56S 011-14.56ECable ops · 48.2 nm
Survey operations in progress until further notice by M/V ramform victory towing 12 three mile long cables…Surveys · 53 nm

Worldwide now

84 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.