Surveys

Survey operations in progress until 29 sep by M/V geowave voyager towing six 250 meter long cables in area…

Western South Atlantic · Brazil-southeast Coast · HYDROLANT 2980/18

issued: 2018-09-21 03:37Z
status: cancelled 2018-09-30 00:01Z (archive)
cancels: HYDROLANT 2917/18
authority: NAVAREA V COASTAL E 702/18 210310Z 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 29 SEP
   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 2917/18.
3. CANCEL THIS MSG 30 SEP 18.

Timeline

Survey operations 15 thru 21 sep by M/V geowave voyager towing six 250 meter long cables in area between…cancels · 2018-09-15
Survey operations 15 thru 21 sep by M/V geowave voyager towing six 250 meter long cables in area between…replaced · 2018-09-15
Survey operations in progress until 04 oct by M/V geowave voyager towing six 250 meter long cables in area…cancelled by · 2018-09-29

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.