Surveys

Seimic survey in progress until 310259Z mar by M/V nps western monarch towing three mile long cables in area…

Brazil-southeast Coast · HYDROLANT 661/12

issued: 2012-03-25 01:11Z
status: cancelled 2012-03-31 03:59Z (archive)
self-cancels: 2012-03-31 03:59Z
authority: NAVAREA V E 384/12 250031Z MAR 12.
sea: South Atlantic Ocean
position: -21.450, -39.483
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

BRAZIL-SOUTHEAST COAST.
1. SEIMIC SURVEY IN PROGRESS UNTIL 310259Z MAR BY
   M/V NPS WESTERN MONARCH TOWING THREE MILE
   LONG CABLES IN AREA BOUND BY
   20-33S 039-51W, 20-33S 039-07W,
   22-21S 039-07W, 22-21S 039-51W.
   SIX MILE BERTH REQUESTED.
2. CANCEL THIS MSG 310359Z MAR.

This area · survey operations

607 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 09 jul 27 by M/V bgp dragon towing 250 meter long cable in area bound by…Surveys · 58 nm
Odas buoy temporarily established until 13 apr 27 in 21-34.20S 040-43.62WNav aids · 69.8 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 · 73.6 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 · 73.7 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 · 73.8 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 · 74.2 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 · 74.6 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 · 74.7 nm
Underwater operations 0800Z to 1800Z daily 02 thru 16 aug by M/V comando b and M/V royal topaz in 20-21.62S…Surveys · 74.9 nm
Underwater operations in progress until 170259Z aug in 22-22.48S 040-25.05WSurveys · 76.1 nm
Underwater operations 281000Z jul to 192100Z aug by M/V umi polaris in area bound by 21-53.65S 040-49.70W,…Surveys · 76.4 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 · 77.8 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.