Surveys

Survey operations in progress until 03 aug by M/V hai yang shi you 720 in area bound by 26-55S 044-22W,…

Western South Atlantic · HYDROLANT 1955/21

issued
2021-07-27 01:21Z
status
cancelled 2021-08-03 00:30Z (archive)
authority
NAVAREA V 338/21 270036Z JUL 21.
sea
South Atlantic Ocean
position
-26.856, -44.689
source
nga_json · first seen 2026-08-17 13:38Z

Original warning text

WESTERN SOUTH ATLANTIC.
DNC 01.
1. SURVEY OPERATIONS IN PROGRESS UNTIL 03 AUG
   BY M/V HAI YANG SHI YOU 720 IN AREA BOUND BY
   26-55S 044-22W, 27-10S 045-15W,
   26-59S 045-22W, 26-27S 043-56W.
   WIDE BERTH REQUESTED.
2. CANCEL THIS MSG 04 AUG 21.

This area · survey operations

448 within 180 nm since 1999 · 3 in the last 12 months · 2 in force now

99
00
05
10
15
20
25
26

Season · when survey operations happen here

J
F
M
A
M
J
J
A
S
O
N
D

month of issue, all years in the archive

Timeline

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.