Surveys

Survey operations by M/V polarcus alima towing 12 8100 meter long cables along tracklines between: a. 18 feb…

Western South Atlantic · HYDROLANT 562/17

issued: 2017-02-18 14:13Z
status: cancelled 2017-02-19 21:11Z (archive)
cancels: HYDROLANT 549/17
authority: NAVAREA VI 106/17 181347Z FEB 17.
position: -35.327, -51.189
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 ALONG TRACKLINES BETWEEN:
   A. 18 FEB
      35-25.58S 051-10.17W AND 35-24.45S 051-11.92W.
   B. 18 FEB
      35-17.17S 051-22.63W AND 35-23.05S 050-58.12W.
   C. 19 FEB
      35-27.90S 051-02.78W AND 35-15.62S 051-21.75W.
   D. 19 FEB
      35-07.43S 051-22.87W AND 35-23.30S 050-58.37W.
   E. 20 FEB
      35-28.17S 051-03.02W AND 35-15.87S 051-22.00W.
   SIX MILE BERTH REQUESTED.
2. CANCEL HYDROLANT 549/17.
3. CANCEL THIS MSG 21 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 by M/V polarcus alima towing 12 8100 meter long cables: a. 17 feb along trackline between…cancels · 2017-02-17
Survey operations by M/V polarcus alima towing 12 8100 meter long cables: a. 17 feb along trackline between…replaced · 2017-02-17
Survey operations in progress until 21 feb by M/V polarcus alima towing 12 8100 meter long cables along…cancelled by · 2017-02-19

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.