Surveys

Survey operations in progress until 17 apr by M/V oceanic sirius towing 12 12000 meter long cables in area…

Western South Atlantic · Brazil-southeast Coast · HYDROLANT 970/21

issued
2021-04-09 02:26Z
status
cancelled 2021-04-16 00:35Z (archive)
cancels
HYDROLANT 886/21
authority
NAVAREA V 154/21 090041Z APR 21.
position
-24.895, -39.836
source
nga_json · first seen 2026-08-17 13:38Z

Original warning text

WESTERN SOUTH ATLANTIC.
BRAZIL-SOUTHEAST COAST.
DNC 01.
1. SURVEY OPERATIONS IN PROGRESS UNTIL 17 APR BY
   M/V OCEANIC SIRIUS TOWING 12 12000 METER LONG
   CABLES IN AREA BOUND BY
   26-47.47S 042-25.97W, 24-18.62S 042-21.21W,
   24-18.80S 042-06.62W, 24-06.12S 042-06.45W,
   23-31.55S 040-58.48W, 22-50.33S 039-56.13W,
   22-35.07S 037-41.03W, 26-34.27S 037-35.21W.
   WIDE BERTH REQUESTED.
2. CANCEL HYDROLANT 886/21.
3. CANCEL THIS MSG 18 APR 21.

This area · survey operations

617 within 180 nm since 2000 · 5 in the last 12 months · 5 in force now

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Season · when survey operations happen here

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month of issue, all years in the archive

Timeline

Nearby now · within 120 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.