Surveys

Survey operations in progress until 230259Z mar by M/V polar bjorn towing 50 meter long cable in area bound…

HYDROLANT 445/04

issued: 2004-03-19 02:52Z
status: cancelled 2004-03-23 03:59Z (archive)
self-cancels: 2004-03-23 03:59Z
cancels: HYDROLANT 427/04
authority: NAVAREA V 229/04 190216Z MAR 04; NAVAREA V 228/04 190216Z MAR 04
sea: South Atlantic Ocean
position: -24.550, -43.636
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

1. SURVEY OPERATIONS IN PROGRESS UNTIL 230259Z MAR BY
   M/V POLAR BJORN TOWING 50 METER LONG CABLE IN AREA
   BOUND BY 24-08.3S 044-15.9W, 24-07.6S 043-01.0W,
   24-57.7S 043-00.2W, 24-58.3S 044-15.6W. TWO MILE
   BERTH REQUESTED.
2. CANCEL HYDROLANT 427/04.
3. CANCEL THIS MSG 230359Z MAR.

This area · survey operations

583 within 180 nm since 2000 · 4 in the last 12 months · 1 in force now

Season · when survey operations happen here

month of issue, all years in the archive

Timeline

M/V excellent pescadores reports crewman requiring medical assistance in 00-56S 040-33W at 151250Z marcancels · 2004-03-16
M/V excellent pescadores reports crewman requiring medical assistance in 00-56S 040-33W at 151250Z marreplaced · 2004-03-16

Nearby now · within 120 nm

Hazardous operations in progress until 060400Z jun 27 in area bound by 24-39.87S 042-29.30W, 24-39.78S…Exercises · 62 nm
Ponta dos meros light 23-13.57S 044-20.83W unlit until 26 sepNav aids · 88.6 nm
Odas buoy established in 24-06.36S 045-38.78WNav aids · 113.2 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.