Surveys

Underwater operations in progress until 282000Z feb by M/V sao pedro glorioso in: a. 21-49.08S 040-56.60W

Western South Atlantic · Brazil · HYDROLANT 317/23

issued: 2023-02-07 21:22Z
status: cancelled 2023-02-10 14:29Z (archive)
self-cancels: 2023-02-28 21:00Z
authority: NAVAREA V COASTAL 80/23 072046Z FEB 23.
position: -21.841, -40.988
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

WESTERN SOUTH ATLANTIC.
BRAZIL.
DNC 01.
1. UNDERWATER OPERATIONS IN PROGRESS UNTIL
   282000Z FEB BY M/V SAO PEDRO GLORIOSO IN:
   A. 21-49.08S 040-56.60W.
   B. 21-49.24S 040-56.65W.
   C. 21-48.91S 040-57.27W.
   D. 21-49.24S 040-57.26W.
   E. 21-49.14S 040-58.17W.
   F. 21-49.32S 040-57.80W.
   G. 21-49.59S 040-58.63W.
   H. 21-49.70S 040-58.51W.
   I. 21-50.09S 040-59.14W.
   J. 21-50.18S 040-58.99W.
   K. 21-50.53S 040-59.70W.
   L. 21-50.72S 040-59.68W.
   M. 21-51.19S 041-01.11W.
   N. 21-51.10S 041-00.41W.
   O. 21-51.41S 041-01.21W.
   P. 21-51.26S 041-00.82W.
   Q. 21-52.39S 041-00.66W.
   R. 21-51.49S 041-01.09W.
   S. 21-52.76S 041-00.42W.
   T. 21-51.65S 041-00.99W.
   WIDE BERTH REQUESTED.
2. CANCEL THIS MSG 282100Z FEB 23.

This area · survey operations

639 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

HYDROLANT warnings in force as of 101415Z febcancelled by · 2023-02-10

Nearby now · within 120 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 · 9.7 nm
Underwater operations in progress until 312300Z aug by M/V fugro vaquita in area bound by 21-35.43S…Surveys · 12 nm
RACON at cabo sao tome light 22-02.52S 041-03.17W off air until 28 sepNav aids · 12.6 nm
Underwater operations 281000Z jul to 192100Z aug by M/V umi polaris in area bound by 21-53.65S 040-49.70W,…Surveys · 13.4 nm
Odas buoy temporarily established until 13 apr 27 in 21-34.20S 040-43.62WNav aids · 21.8 nm
Barra de itabapoana light 21-18.80S 040-57.90W unlit until 08 sep 26Nav aids · 31.7 nm
Underwater operations in progress until 170259Z aug in 22-22.48S 040-25.05WSurveys · 45.1 nm
Underwater operations 1000Z to 2000Z daily until 02 nov 26 by M/V fugro vaquita in: a. 22-26.32S 040-25.47WSurveys · 48.1 nm
Survey operations in progress until 09 jul 27 by M/V bgp dragon towing 250 meter long cable in area bound by…Surveys · 59.5 nm
Survey operations 10 aug 26 thru 08 mar 27 by tug mce navegacao I in area bound by 22-48.38S 041-08.21W,…Surveys · 59.7 nm
Underwater operations in progress until 140001Z nov by M/V fugro vaquita in area bound by 22-03.00S…Surveys · 92.7 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 · 98.2 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.