Surveys

Underwater operations in progress until 09 may by M/V joides resolution in area within two miles of…

Western South Atlantic · HYDROLANT 1241/21

issued
2021-05-05 11:49Z
status
cancelled 2021-05-10 00:01Z (archive)
cancels
HYDROLANT 1195/21
authority
NAVAREA V 201/21 050948Z MAY 21.
position
-30.942, -26.699 · r 2.0 nm
source
nga_json · first seen 2026-08-17 13:38Z

Original warning text

WESTERN SOUTH ATLANTIC.
DNC 01.
1. UNDERWATER OPERATIONS IN PROGRESS UNTIL 09 MAY
   BY M/V JOIDES RESOLUTION IN AREA WITHIN TWO MILES
   OF 30-56.52S 026-41.94W.
   WIDE BERTH REQUESTED.
2. CANCEL HYDROLANT 1195/21.
3. CANCEL THIS MSG 10 MAY 21.

This area · survey operations

6 within 180 nm since 2021 · 0 in the last 12 months · 0 in force now

21
22

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

73 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.