Surveys

Survey operations 2100Z to 0300Z commencing daily 30 aug thru 28 sep by M/V baru atria, M/V locar lh XXI,…

Western South Atlantic · Brazil-southeast Coast · HYDROLANT 2666/19

issued: 2019-08-31 04:06Z
status: cancelled 2019-09-29 04:00Z (archive)
self-cancels: 2019-09-29 04:00Z
cancels: HYDROLANT 2621/19
authority: NAVAREA V COASTAL E 899/19 310346Z AUG 19.
sea: South Atlantic Ocean
position: -22.858, -40.358 · r 2.0 nm
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

WESTERN SOUTH ATLANTIC.
BRAZIL-SOUTHEAST COAST.
DNC 01.
1. SURVEY OPERATIONS 2100Z TO 0300Z COMMENCING
   DAILY 30 AUG THRU 28 SEP
   BY M/V BARU ATRIA, M/V LOCAR LH XXI,
   M/V LOCAR LH XXII, M/V LOCAR LH XXIV,
   M/V LH PLACIDO, M/V CBO ATLANTICO,
   M/V SANTOS SCOUT, M/V CBO GUANABARA,
   M/V CBO MANOELLA, M/V CBO BOSSA NOVA,
   M/V MAR LIMPO II, M/V ASTRO TUPI,
   M/V DANKO TIDE, M/V ASGAARD SOPHIA
   AND M/V SAPURA ESMERALDA
   IN AREA WITHIN TWO MILES OF 22-51.47S 040-21.50W.
   TWO MILE BERTH REQUESTED.
2. CANCEL HYDROLANT 2621/19.
3. CANCEL THIS MSG 290400Z SEP 19.

Activity windows · 30 in this warning

opens (UTC)	closes (UTC)	local	length
2019-08-30 21:00Z	2019-08-31 03:00Z	—	6 h
2019-08-31 21:00Z	2019-09-01 03:00Z	—	6 h
2019-09-01 21:00Z	2019-09-02 03:00Z	—	6 h
2019-09-02 21:00Z	2019-09-03 03:00Z	—	6 h
2019-09-03 21:00Z	2019-09-04 03:00Z	—	6 h
2019-09-04 21:00Z	2019-09-05 03:00Z	—	6 h
2019-09-05 21:00Z	2019-09-06 03:00Z	—	6 h
2019-09-06 21:00Z	2019-09-07 03:00Z	—	6 h
… 22 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

861 within 180 nm since 2000 · 26 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 1100Z to 2100Z daily 28 aug thru 28 sep by M/V baru atria, M/V locar lh XXI, M/V locar…cancels · 2019-08-29
Underwater operations 1100Z to 2100Z daily 28 aug thru 28 sep by M/V baru atria, M/V locar lh XXI, M/V locar…replaced · 2019-08-29

Nearby now · within 120 nm

Underwater operations 1000Z to 2000Z daily until 02 nov 26 by M/V fugro vaquita in: a. 22-26.32S 040-25.47WSurveys · 25 nm
Underwater operations in progress until 170259Z aug in 22-22.48S 040-25.05WSurveys · 29.2 nm
Underwater operations in progress until 140001Z nov by M/V fugro vaquita in area bound by 22-03.00S…Surveys · 31.6 nm
Survey operations in progress until 09 jul 27 by M/V bgp dragon towing 250 meter long cable in area bound by…Surveys · 39.6 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 · 40.1 nm
Underwater operations in progress until 312300Z aug by M/V fugro vaquita in area bound by 21-35.43S…Surveys · 59.5 nm
Underwater operations 281000Z jul to 192100Z aug by M/V umi polaris in area bound by 21-53.65S 040-49.70W,…Surveys · 61 nm
RACON at cabo sao tome light 22-02.52S 041-03.17W off air until 28 sepNav aids · 62.3 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 · 66.3 nm
Odas buoy temporarily established until 13 apr 27 in 21-34.20S 040-43.62WNav aids · 80 nm
Barra de itabapoana light 21-18.80S 040-57.90W unlit until 08 sep 26Nav aids · 98.7 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.