Surveys

Survey operations in progress until 21 feb by M/V polarcus alima towing 12 8100 meter long cables along…

Western South Atlantic · HYDROLANT 574/17

issued
2017-02-19 21:11Z
status
cancelled 2017-02-22 00:01Z (archive)
cancels
HYDROLANT 562/17
authority
NAVAREA VI 109/17 192111Z FEB 17.
position
-35.290, -51.184
source
nga_json · first seen 2026-08-17 13:38Z

Original warning text

WESTERN SOUTH ATLANTIC.
DNC 01, DNC 07.
1. SURVEY OPERATIONS IN PROGRESS UNTIL 21 FEB
   BY M/V POLARCUS ALIMA TOWING 12 8100 METER
   LONG CABLES ALONG TRACKLINES BETWEEN:
   A. 35-07.10S 051-22.38W AND 35-23.03S 050-58.07W.
   B. 35-27.54S 051-02.47W AND 35-15.37S 051-21.45W.
   C. 35-07.26S 051-22.52W AND 35-23.18S 050-58.22W.
   D. 35-28.10S 051-03.02W AND 35-15.52S 051-22.00W.
   E. 35-07.41S 051-23.07W AND 35-23.34S 050-58.37W.
   SIX MILE BERTH REQUESTED.
2. CANCEL HYDROLANT 562/17.
3. CANCEL THIS MSG 22 FEB 17.

This area · survey operations

118 within 180 nm since 2000 · 0 in the last 12 months · 0 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

Nothing else in force within 120 nm.

Worldwide now

75 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.