Surveys

Survey operations in progress until 04 oct by M/V geowave voyager towing six 250 meter long cables in area…

Western South Atlantic · Brazil-southeast Coast · HYDROLANT 3071/18

issued: 2018-09-29 02:59Z
status: cancelled 2018-10-04 01:18Z (archive)
cancels: HYDROLANT 2980/18
authority: NAVAREA V COASTAL E 726/18 290252Z SEP 18.
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

WESTERN SOUTH ATLANTIC.
BRAZIL-SOUTHEAST COAST.
DNC 01.
1. SURVEY OPERATIONS IN PROGRESS UNTIL 04 OCT
   BY M/V GEOWAVE VOYAGER TOWING SIX
   250 METER LONG CABLES IN AREA BETWEEN
   21-06S 21-22S AND 039-40W 040-13W.
   WIDE BERTH REQUESTED.
2. CANCEL HYDROLANT 2980/18.
3. CANCEL THIS MSG 05 OCT 18.

Timeline

Survey operations in progress until 29 sep by M/V geowave voyager towing six 250 meter long cables in area…cancels · 2018-09-21
Survey operations in progress until 29 sep by M/V geowave voyager towing six 250 meter long cables in area…replaced · 2018-09-21
Survey operations in progress until 12 oct by M/V geowave voyager towing six 250 meter long cables in area…cancelled by · 2018-10-04

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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.