Surveys

Underwater operations in progress until further notice in area between 45-55S 46-10S and 059-40W 059-30W

Western South Atlantic · HYDROLANT 988/18

issued: 2018-03-23 10:36Z
status: cancelled 2018-03-23 16:58Z (archive)
authority: NAVAREA VI 149/18 221640Z MAR 18.
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

WESTERN SOUTH ATLANTIC.
DNC 07.
UNDERWATER OPERATIONS IN PROGRESS
UNTIL FURTHER NOTICE IN AREA BETWEEN
45-55S 46-10S AND 059-40W 059-30W.
FOUR MILE BERTH REQUESTED.

Timeline

Underwater operations in progress until further notice in area bound by 45-50.8S 059-53.7W, 45-53.2S…cancelled by · 2018-03-23

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.