Surveys

Underwater operations 130900Z jun thru 272100Z aug by M/V anchieta in 21-19.28S 040-03.68W

Western South Atlantic · Brazil-southeast Coast · HYDROLANT 1583/21

issued: 2021-06-13 02:53Z
status: cancelled 2021-06-13 04:38Z (archive)
self-cancels: 2021-08-27 22:00Z
authority: NAVAREA V 251/21 130222Z JUN 21.
position: -21.321, -40.061
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

WESTERN SOUTH ATLANTIC.
BRAZIL-SOUTHEAST COAST.
DNC 01.
1. UNDERWATER OPERATIONS 130900Z JUN THRU 272100Z AUG
   BY M/V ANCHIETA IN 21-19.28S 040-03.68W.
   WIDE BERTH REQUESTED.
2. CANCEL THIS MSG 272200Z AUG 21.

This area · survey operations

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

Season · when survey operations happen here

month of issue, all years in the archive

Timeline

Underwater operations 0900Z to 2100Z daily 13 jun thru 27 aug by M/V anchieta in 21-19.28S 040-03.68Wcancelled by · 2021-06-13

Nearby now · within 120 nm

Odas buoy temporarily established until 13 apr 27 in 21-34.20S 040-43.62WNav aids · 40.1 nm
Barra de itabapoana light 21-18.80S 040-57.90W unlit until 08 sep 26Nav aids · 50.5 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 · 52.2 nm
Underwater operations 281000Z jul to 192100Z aug by M/V umi polaris in area bound by 21-53.65S 040-49.70W,…Surveys · 52.7 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 · 55.7 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 · 55.9 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 · 56 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 · 56.3 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 · 56.5 nm
Underwater operations in progress until 312300Z aug by M/V fugro vaquita in area bound by 21-35.43S…Surveys · 57 nm
Survey operations in progress until 09 jul 27 by M/V bgp dragon towing 250 meter long cable in area bound by…Surveys · 57.2 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 · 57.4 nm

Worldwide now

73 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.