Surveys

Survey operations in progress until 15 nov by M/V polarcus adira towing ten 6500 meter long cables in area…

Western South Atlantic · Brazil-southeast Coast · HYDROLANT 3211/17

issued: 2017-10-09 13:24Z
status: cancelled 2017-11-16 00:01Z (archive)
cancels: HYDROLANT 3175/17
authority: NAVAREA V COASTAL E 835/17 091319Z OCT 17.
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

WESTERN SOUTH ATLANTIC.
BRAZIL-SOUTHEAST COAST.
DNC 01.
1. SURVEY OPERATIONS IN PROGRESS UNTIL 15 NOV
   BY M/V POLARCUS ADIRA TOWING TEN 6500 METER
   LONG CABLES IN AREA BETWEEN
   20-59S 21-29S AND 039-11W 040-09W.
   WIDE BERTH REQUESTED.
2. CANCEL HYDROLANT 3175/17.
3. CANCEL THIS MSG 16 NOV 17.

Timeline

Survey operations 07 thru 14 oct by M/V polarcus adira towing 9000 meter long cable in area between 20-59S…cancels · 2017-10-06
Survey operations 07 thru 14 oct by M/V polarcus adira towing 9000 meter long cable in area between 20-59S…replaced · 2017-10-06

Nearby now · within 120 nm

Nothing else in force within 120 nm.

Worldwide now

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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.