Surveys

Survey operations 150900Z thru 280300Z mar by M/V almirante graca aranha H34 in area bound by 29-46.90S…

Western South Atlantic · Brazil-south Coast · HYDROLANT 730/21

issued
2021-03-15 01:28Z
status
cancelled 2021-03-28 04:00Z (archive)
self-cancels
2021-03-28 04:00Z
authority
NAVAREA V 188/21 150059Z MAR 21.
position
-29.955, -49.863
source
nga_json · first seen 2026-08-17 13:38Z

Original warning text

WESTERN SOUTH ATLANTIC.
BRAZIL-SOUTH COAST.
DNC 01.
1. SURVEY OPERATIONS 150900Z THRU 280300Z MAR BY
   M/V ALMIRANTE GRACA ARANHA H34
   IN AREA BOUND BY
   29-46.90S 050-00.60W, 29-46.90S 049-38.21W,
   30-06.60S 049-38.21W, 30-06.60S 050-09.60W.
   WIDE BERTH REQUESTED.
2. CANCEL THIS MSG 280400Z MAR 21.

This area · survey operations

22 within 180 nm since 1998 · 1 in the last 12 months · 1 in force now

98
00
05
10
15
20
25
26

Season · when survey operations happen here

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F
M
A
M
J
J
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month of issue, all years in the archive

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.