Surveys

Survey operations in progress until 12 apr by M/V siem dorado in area bound by 25-31.00S 044-27.00W,…

Western South Atlantic · HYDROLANT 729/23

issued
2023-04-04 22:59Z
status
cancelled 2023-04-13 00:01Z (archive)
self-cancels
2023-04-13 00:01Z
authority
NAVAREA V 101/23 042058Z APR 23.
sea
South Atlantic Ocean
position
-25.646, -44.705
source
nga_json · first seen 2026-08-17 13:38Z

Original warning text

WESTERN SOUTH ATLANTIC.
DNC 01.
1. SURVEY OPERATIONS IN PROGRESS UNTIL 12 APR
   BY M/V SIEM DORADO IN AREA BOUND BY
   25-31.00S 044-27.00W, 25-23.00S 044-42.00W,
   25-25.00S 044-50.00W, 25-39.00S 044-59.00W,
   25-47.00S 044-57.00W, 25-54.00S 044-44.00W,
   25-51.00S 044-33.00W, 25-43.00S 044-27.00W.
2. CANCEL THIS MSG 130001Z APR 23.

This area · survey operations

589 within 180 nm since 1999 · 1 in the last 12 months · 1 in force now

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26

Season · when survey operations happen here

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month of issue, all years in the archive

Nearby now · within 120 nm

Worldwide now

86 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.