Surveys

Survey operations 26 jan thru 02 feb by M/V hai yang shi you 720 towing ten 12000 meter long cables in area…

Western South Atlantic · Brazil-east Coast · HYDROLANT 229/21

issued: 2021-01-26 01:26Z
status: cancelled 2021-02-02 06:04Z (archive)
authority: NAVAREA V 45/21 260035Z JAN 21.
sea: South Atlantic Ocean
position: -20.542, -39.108
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

WESTERN SOUTH ATLANTIC.
BRAZIL-EAST COAST.
DNC 01.
1. SURVEY OPERATIONS 26 JAN THRU 02 FEB BY
   M/V HAI YANG SHI YOU 720 TOWING TEN
   12000 METER LONG CABLES IN AREA BOUND BY
   20-27S 039-14W, 20-30S 038-57W,
   20-38S 038-59W, 20-35S 039-16W.
   WIDE BERTH REQUESTED.
2. CANCEL THIS MSG 03 FEB 21.

This area · survey operations

572 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 in progress until 08 feb by M/V hai yang shi you 720 towing ten 12000 meter long cables in…cancelled by · 2021-02-02

Nearby now · within 120 nm

Underwater operations 0800Z to 1800Z daily 02 thru 16 aug by M/V comando b and M/V royal topaz in 20-21.62S…Surveys · 58.7 nm
Underwater operations in progress until 27 aug by M/V navios felix and M/V comando b in 20-22.12S 040-08.38WSurveys · 58.9 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 · 59.2 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 · 59.4 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 · 59.7 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 · 59.8 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 · 60.9 nm
Foul ground until 06 dec 27 in area bound by 19-53.87S 039-59.68W, 19-54.15S 039-59.27W, 19-53.08S…Wrecks · 62.9 nm
Odas buoy temporarily established until 13 apr 27 in 21-34.20S 040-43.62WNav aids · 109.7 nm
Barra de itabapoana light 21-18.80S 040-57.90W unlit until 08 sep 26Nav aids · 114 nm
Survey operations in progress until 09 jul 27 by M/V bgp dragon towing 250 meter long cable in area bound by…Surveys · 116 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.