Surveys

Survey operations by M/V polarcus alima towing 12 8100 meter long cables: a. 21 mar along trackline between…

Western South Atlantic · HYDROLANT 920/17

issued
2017-03-21 14:55Z
status
cancelled 2017-03-23 00:01Z (archive)
cancels
HYDROLANT 907/17
authority
NAVAREA VI 178/17 211437Z MAR 17.
sea
South Atlantic Ocean
position
-35.567, -51.427
source
nga_json · first seen 2026-08-17 13:38Z

Original warning text

WESTERN SOUTH ATLANTIC.
DNC 07.
1. SURVEY OPERATIONS BY M/V POLARCUS ALIMA
   TOWING 12 8100 METER LONG CABLES:
   A. 21 MAR ALONG TRACKLINE BETWEEN
      35-24.10S 051-41.48W AND 35-33.40S 051-39.03W.
   B. 21 MAR ALONG TRACKLINE BETWEEN
      35-25.52S 051-31.37W AND 35-37.30S 051-12.37W.
   C. 21 MAR ALONG TRACKLINE BETWEEN
      35-45.22S 051-19.53W AND 35-32.88S 051-38.53W.
   D. 22 MAR ALONG TRACKLINE BETWEEN
      35-25.27S 051-31.12W AND 35-37.92S 051-12.12W.
   E. 22 MAR ALONG TRACKLINE BETWEEN
      35-44.97S 051-17.53W AND 35-32.63S 051-38.28W.
   F. 22 MAR ALONG TRACKLINE BETWEEN
      35-25.02S 051-30.87W AND 35-37.33S 051-11.88W.
   SIX MILE BERTH REQUESTED.
2. CANCEL HYDROLANT 907/17.
3. CANCEL THIS MSG 23 MAR 17.

This area · survey operations

119 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

84 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.