Surveys

Survey operations in progress until 312359Z may by M/V polarcus alima towing six 3300 meter long cables in…

Eastern South Atlantic · Angola · HYDROLANT 1456/17

issued: 2017-05-08 16:39Z
status: cancelled 2017-05-13 08:12Z (archive)
self-cancels: 2017-06-01 00:59Z
authority: NAVAREA II 177/17 081636Z MAY 17.
sea: South Atlantic Ocean
position: -5.327, 11.399
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 312359Z MAY
   BY M/V POLARCUS ALIMA TOWING SIX 3300
   METER LONG CABLES IN AREA BOUND BY
   05-12S 011-13E, 05-07S 011-20E,
   05-28S 011-35E, 05-32S 011-28E.
   THREE MILE BERTH REQUESTED.
2. CANCEL THIS MSG 010059Z JUN 17.

This area · survey operations

74 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 312359Z may by M/V polarcus alima towing six 3300 meter long cables in…cancelled by · 2017-05-13

Nearby now · within 120 nm

Survey operations in progress until further notice by M/V ramform victory towing 12 three mile long cables…Surveys · 59 nm
Survey operations in progress until 22 aug by cableship nautilus in: a. 06-16.56S 011-14.56ECable ops · 64.1 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.