Surveys

Survey operations 06 thru 10 sep by M/V sw diamond towing nine cables in area bound by 21-16.24S 040-07.95W,…

Western South Atlantic · Brazil-southeast Coast · HYDROLANT 2269/21

issued: 2021-09-05 15:09Z
status: cancelled 2021-09-11 00:01Z (archive)
authority: NAVAREA V 404/21 051223Z SEP 21.
sea: South Atlantic Ocean
position: -21.312, -40.002
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

WESTERN SOUTH ATLANTIC.
BRAZIL-SOUTHEAST COAST.
DNC 01.
1. SURVEY OPERATIONS 06 THRU 10 SEP BY
   M/V SW DIAMOND TOWING NINE CABLES
   IN AREA BOUND BY
   21-16.24S 040-07.95W, 21-13.98S 040-07.75W,
   21-21.13S 039-52.33W, 21-23.42S 039-52.47W.
   WIDE BERTH REQUESTED.
2. CANCEL THIS MSG 11 SEP 21.

This area · survey operations

606 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

Nearby now · within 120 nm

Odas buoy temporarily established until 13 apr 27 in 21-34.20S 040-43.62WNav aids · 43.4 nm
Barra de itabapoana light 21-18.80S 040-57.90W unlit until 08 sep 26Nav aids · 53.9 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 · 55.2 nm
Underwater operations 281000Z jul to 192100Z aug by M/V umi polaris in area bound by 21-53.65S 040-49.70W,…Surveys · 55.5 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 · 55.6 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 · 55.7 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 · 55.8 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 · 56.2 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 · 56.3 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 · 57.1 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 · 57.6 nm
Survey operations in progress until 09 jul 27 by M/V bgp dragon towing 250 meter long cable in area bound by…Surveys · 57.8 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.