Surveys

Survey operations 18 thru 25 mar by M/V polarcus adira towing 9000 meter long cable in area bound by 22-51S…

Western South Atlantic · Brazil-southeast Coast · HYDROLANT 858/17

issued: 2017-03-17 02:43Z
status: cancelled 2017-03-17 18:01Z (archive)
authority: NAVAREA V COASTAL 237/17 170010Z MAR 17.
sea: South Atlantic Ocean
position: -21.320, -40.917
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

WESTERN SOUTH ATLANTIC.
BRAZIL-SOUTHEAST COAST.
DNC 01.
1. SURVEY OPERATIONS 18 THRU 25 MAR
   BY M/V POLARCUS ADIRA TOWING 9000 METER LONG
   CABLE IN AREA BOUND BY
   22-51S 043-11W, 24-49S 043-11W,
   27-15S 045-10W, 29-06S 045-42W,
   25-51S 043-11W, 21-05S 039-27W,
   14-16S 036-41W, 12-11S 035-20W.
   WIDE BERTH REQUESTED.
2. CANCEL THIS MSG 26 MAR 17.

This area · survey operations

612 within 180 nm since 2000 · 24 in the last 12 months · 15 in force now

Season · when survey operations happen here

month of issue, all years in the archive

Timeline

Survey operations 18 thru 25 mar by M/V polarcus adira towing 9000 meter long cable in area bound by 22-51S…cancelled by · 2017-03-17

Nearby now · within 120 nm

Barra de itabapoana light 21-18.80S 040-57.90W unlit until 08 sep 26Nav aids · 2.7 nm
Odas buoy temporarily established until 13 apr 27 in 21-34.20S 040-43.62WNav aids · 18.4 nm
Survey operations in progress until 312200Z aug in area bound by 21-36.17S 041-00.00W, 21-36.05S 040-37.59W,…Surveys · 31.6 nm
Underwater operations 281000Z jul to 192100Z aug by M/V umi polaris in area bound by 21-53.65S 040-49.70W,…Surveys · 36.6 nm
Underwater operations in progress until 312300Z aug by M/V fugro vaquita in area bound by 21-35.43S…Surveys · 38.9 nm
RACON at cabo sao tome light 22-02.52S 041-03.17W off air until 28 sepNav aids · 44 nm
Underwater operations in progress until 170259Z aug in 22-22.48S 040-25.05WSurveys · 69.1 nm
Underwater operations 1100Z to 2100Z daily 15 thru 29 aug by M/V comando b and M/V rosco banyan in 20-23.37S…Surveys · 69.6 nm
Underwater operations 1100Z to 2100Z daily 13 thru 22 aug by M/V comando b and M/V am kirti in 20-23.90S…Surveys · 69.7 nm
Underwater operations 1100Z to 2100Z daily 12 thru 21 aug by M/V comando b and M/V faneromeni in 20-23.67S…Surveys · 70 nm
Underwater operations 0800Z to 1800Z daily 08 thru 22 aug by M/V marsanne and M/V comando b in 20-23.57S…Surveys · 70.5 nm
Underwater operations 0800Z to 1800Z daily 11 thru 25 aug by M/V comando b and M/V faneromeni in 20-23.00S…Surveys · 70.8 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.