Surveys

Survey operations in progress until 04 mar by M/V polarcus alima towing 12 8100 meter long cables along…

Western South Atlantic · HYDROLANT 697/17

issued: 2017-03-03 05:33Z
status: cancelled 2017-03-05 00:01Z (archive)
cancels: HYDROLANT 675/17
authority: NAVAREA VI 136/17 030200Z MAR 17.
sea: South Atlantic Ocean
position: -35.541, -51.377
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

WESTERN SOUTH ATLANTIC.
DNC 07.
1. SURVEY OPERATIONS IN PROGRESS UNTIL 04 MAR BY
   M/V POLARCUS ALIMA TOWING 12 8100 METER
   LONG CABLES ALONG TRACKLINES BETWEEN:
   A. 35-41.15S 051-15.58W AND 35-28.83S 051-34.58W.
   B. 35-20.95S 051-26.92W AND 35-33.25S 051-07.93W.
   C. 35-41.40S 051-15.83W AND 35-29.08S 051-34.82W.
   SIX MILE BERTH REQUESTED.
2. CANCEL HYDROLANT 675/17.
3. CANCEL THIS MSG 05 MAR 17.

This area · survey operations

119 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 along tracklines between: a. 01 mar…cancels · 2017-03-01
Survey operations by M/V polarcus alima towing 12 8100 meter long cables along tracklines between: a. 01 mar…replaced · 2017-03-01
Survey operations in progress until by M/V polarcus alima towing 12 8100 meter long cables along tracklines…cancelled by · 2017-03-04

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.