Surveys

Survey operations by M/V polarcus alima towing 12 8100 meter long cables: a. 17 feb along trackline between…

Western South Atlantic · HYDROLANT 549/17

issued: 2017-02-17 15:02Z
status: cancelled 2017-02-20 00:01Z (archive)
cancels: HYDROLANT 542/17
authority: NAVAREA VI 104/17 171500Z FEB 17.
position: -35.316, -51.168
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

WESTERN SOUTH ATLANTIC.
DNC 01, DNC 07.
1. SURVEY OPERATIONS BY M/V POLARCUS ALIMA TOWING
   12 8100 METER LONG CABLES:
   A. 17 FEB ALONG TRACKLINE BETWEEN
      35-27.65S 051-02.53W AND 35-15.37S 051-21.52W.
   B. 17 FEB ALONG TRACKLINE BETWEEN
      35-16.08S 051-05.75W AND 35-21.78S 050-56.90W.
   C. 18 FEB ALONG TRACKLINE BETWEEN
      35-27.90S 051-02.78W AND 35-15.62S 051-21.75W.
   D. 18 FEB ALONG TRACKLINE BETWEEN
      35-06.92S 051-22.38W AND 35-22.80S 050-57.87W.
   E. 19 FEB IN VICINITY 35-28.17S 051-03.03W.
   SIX MILE BERTH REQUESTED.
2. CANCEL HYDROLANT 542/17.
3. CANCEL THIS MSG 20 FEB 17.

This area · survey operations

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

Season · when survey operations happen here

month of issue, all years in the archive

Timeline

Survey operations in progress until 18 feb by M/V polarcus alima towing 12 8100 meter long cables along…cancels · 2017-02-17
Survey operations in progress until 18 feb by M/V polarcus alima towing 12 8100 meter long cables along…replaced · 2017-02-17
Survey operations by M/V polarcus alima towing 12 8100 meter long cables along tracklines between: a. 18 feb…cancelled by · 2017-02-18

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.