Surveys

Survey operations in progress until 14 feb, 27 feb thru 12 mar and 18 thru 27 mar by M/V sirius in area…

South Atlantic · Brazil · HYDROLANT 270/10

issued: 2010-02-11 23:26Z
status: cancelled 2010-03-25 00:36Z (archive)
authority: NAVAREA V 29/10 11 FEB 10.
sea: South Atlantic Ocean
position: -30.683, -35.041
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

SOUTH ATLANTIC.
BRAZIL.
1. SURVEY OPERATIONS IN PROGRESS UNTIL 14 FEB,
   27 FEB THRU 12 MAR AND 18 THRU 27 MAR
   BY M/V SIRIUS IN AREA BOUND BY
   29-35S 037-10W, 30-20S 037-10W,
   31-50S 036-05W, 31-50S 033-05W,
   30-37S 033-05W, 29-35S 033-50W.
2. CANCEL THIS MSG 28 MAR.

This area · survey operations

1 within 180 nm since 2010 · 0 in the last 12 months · 0 in force now

Season · when survey operations happen here

month of issue, all years in the archive

Timeline

Cancel HYDROLANT 270/10 and this msgcancelled by · 2010-03-25

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.