Surveys

Underwater operations 1000Z to 2000Z daily 22 jan thru 15 feb by M/V sao pedro glorioso and tug multicat acu…

Western South Atlantic · Brazil-southeast Coast · HYDROLANT 188/22

issued: 2022-01-21 04:34Z
status: cancelled 2022-02-15 21:00Z (archive)
self-cancels: 2022-02-15 21:00Z
authority: NAVAREA V COASTAL E 51/22 210331Z JAN 22.
sea: South Atlantic Ocean
position: -21.816, -40.913
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

WESTERN SOUTH ATLANTIC.
BRAZIL-SOUTHEAST COAST.
DNC 01.
1. UNDERWATER OPERATIONS 1000Z TO 2000Z DAILY
   22 JAN THRU 15 FEB BY M/V SAO PEDRO GLORIOSO
   AND TUG MULTICAT ACU IN:
   A. 21-50.13S 040-47.78W.
   B. 21-50.28S 040-47.80W.
   C. 21-49.98S 040-48.96W.
   D. 21-50.13S 040-48.98W.
   E. 21-49.83S 040-50.13W.
   F. 21-49.98S 040-50.15W.
   G. 21-49.68S 040-51.29W.
   H. 21-49.83S 040-51.33W.
   I. 21-49.50S 040-51.99W.
   J. 21-49.65S 040-52.04W.
   K. 21-49.23S 040-53.04W.
   L. 21-49.37S 040-53.08W.
   M. 21-48.95S 040-54.08W.
   N. 21-49.10S 040-54.12W.
   O. 21-48.68S 040-55.12W.
   P. 21-48.83S 040-55.16W.
   Q. 21-48.41S 040-56.16W.
   R. 21-48.55S 040-56.21W.
   S. 21-48.13S 040-57.20W.
   T. 21-48.28S 040-57.25W.
   U. 21-47.85S 040-58.28W.
   V. 21-47.99S 040-58.32W.
   W. 21-47.43S 040-58.95W.
   X. 21-47.85S 040-58.88W.
   Y. 21-47.51S 040-59.29W.
   Z. 21-47.79S 040-59.43W.
   AA. 21-48.03S 040-59.36W.
   AB. 21-48.15S 040-59.20W.
   AC. 21-49.14S 040-58.17W.
   AD. 21-49.59S 040-58.63W.
   AE. 21-49.70S 040-58.51W.
   WIDE BERTH REQUESTED.
2. CANCEL THIS MSG 152100Z FEB 22.

Activity windows · 25 in this warning

opens (UTC)	closes (UTC)	local	length
2022-01-22 10:00Z	2022-01-22 20:00Z	—	10 h
2022-01-23 10:00Z	2022-01-23 20:00Z	—	10 h
2022-01-24 10:00Z	2022-01-24 20:00Z	—	10 h
2022-01-25 10:00Z	2022-01-25 20:00Z	—	10 h
2022-01-26 10:00Z	2022-01-26 20:00Z	—	10 h
2022-01-27 10:00Z	2022-01-27 20:00Z	—	10 h
2022-01-28 10:00Z	2022-01-28 20:00Z	—	10 h
2022-01-29 10:00Z	2022-01-29 20:00Z	—	10 h
… 17 more

Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.

This area · survey operations

647 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

Survey operations in progress until 312200Z aug in area bound by 21-36.17S 041-00.00W, 21-36.05S 040-37.59W,…Surveys · 5.7 nm
Underwater operations in progress until 312300Z aug by M/V fugro vaquita in area bound by 21-35.43S…Surveys · 10.3 nm
Underwater operations 281000Z jul to 192100Z aug by M/V umi polaris in area bound by 21-53.65S 040-49.70W,…Surveys · 10.3 nm
RACON at cabo sao tome light 22-02.52S 041-03.17W off air until 28 sepNav aids · 15.6 nm
Odas buoy temporarily established until 13 apr 27 in 21-34.20S 040-43.62WNav aids · 18.1 nm
Barra de itabapoana light 21-18.80S 040-57.90W unlit until 08 sep 26Nav aids · 30.3 nm
Underwater operations in progress until 170259Z aug in 22-22.48S 040-25.05WSurveys · 43.4 nm
Underwater operations 1000Z to 2000Z daily until 02 nov 26 by M/V fugro vaquita in: a. 22-26.32S 040-25.47WSurveys · 46.7 nm
Survey operations in progress until 09 jul 27 by M/V bgp dragon towing 250 meter long cable in area bound by…Surveys · 56.5 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 · 61.7 nm
Underwater operations in progress until 140001Z nov by M/V fugro vaquita in area bound by 22-03.00S…Surveys · 90.9 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 · 95 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.