Surveys

Underwater operations 0900Z to 1900Z daily 06 thru 22 dec by M/V president kennedy along trackline joining…

Brazil-east Coast · HYDROLANT 2043/11

issued: 2011-12-03 02:06Z
status: cancelled 2011-12-22 20:00Z (archive)
self-cancels: 2011-12-22 20:00Z
authority: NAVAREA V E 1143/11 030042Z DEC 11.
sea: South Atlantic Ocean
position: -21.314, -40.831
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

BRAZIL-EAST COAST.
1. UNDERWATER OPERATIONS 0900Z TO 1900Z DAILY
   06 THRU 22 DEC BY M/V PRESIDENT KENNEDY
   ALONG TRACKLINE JOINING
   21-21.67S 040-45.35W, 21-23.13S 040-43.88W,
   21-24.50S 040-45.45W, 21-23.03S 040-46.92W,
   21-20.55S 040-47.77W, 21-20.63S 040-47.85W,
   21-14.88S 040-54.00W, 21-14.97S 040-54.08W,
   21-14.52S 040-54.33W, 21-14.52S 040-53.98W,
   21-14.83S 040-54.00W, 21-14.83S 040-54.33W,
   21-14.20S 040-53.83W, 21-14.22S 040-53.85W,
   21-12.93S 040-56.70W, 21-12.97S 040-56.72W.
   WIDE BERTH REQUESTED.
2. CANCEL THIS MSG 222000Z DEC.

Activity windows · 17 in this warning

opens (UTC)	closes (UTC)	local	length
2011-12-06 09:00Z	2011-12-06 19:00Z	—	10 h
2011-12-07 09:00Z	2011-12-07 19:00Z	—	10 h
2011-12-08 09:00Z	2011-12-08 19:00Z	—	10 h
2011-12-09 09:00Z	2011-12-09 19:00Z	—	10 h
2011-12-10 09:00Z	2011-12-10 19:00Z	—	10 h
2011-12-11 09:00Z	2011-12-11 19:00Z	—	10 h
2011-12-12 09:00Z	2011-12-12 19:00Z	—	10 h
2011-12-13 09:00Z	2011-12-13 19:00Z	—	10 h
… 9 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

615 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

Barra de itabapoana light 21-18.80S 040-57.90W unlit until 08 sep 26Nav aids · 7.5 nm
Odas buoy temporarily established until 13 apr 27 in 21-34.20S 040-43.62WNav aids · 16.5 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 · 31.4 nm
Underwater operations 281000Z jul to 192100Z aug by M/V umi polaris in area bound by 21-53.65S 040-49.70W,…Surveys · 36.1 nm
Underwater operations in progress until 312300Z aug by M/V fugro vaquita in area bound by 21-35.43S…Surveys · 38.9 nm
RACON at cabo sao tome light 22-02.52S 041-03.17W off air until 28 sepNav aids · 45.4 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 · 66.5 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 · 66.6 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 · 66.9 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 · 67.3 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 · 67.7 nm
Underwater operations in progress until 170259Z aug in 22-22.48S 040-25.05WSurveys · 67.7 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.