Surveys

Survey operations in progress until 190259Z feb by M/V polar bjorn towing 50 meter long cable in area bound…

HYDROLANT 278/04

issued: 2004-02-16 12:50Z
status: cancelled 2004-02-19 03:59Z (archive)
self-cancels: 2004-02-19 03:59Z
cancels: HYDROLANT 257/04
authority: NAVAREA V 136/04 161230Z FEB 04; WZ 266/04 160822Z FEB 04
sea: South Atlantic Ocean
position: -21.169, -39.730
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

1. SURVEY OPERATIONS IN PROGRESS UNTIL 190259Z FEB BY
   M/V POLAR BJORN TOWING 50 METER LONG CABLE
   IN AREA BOUND BY
   20-53.5S 039-57.9W, 20-53.5S 039-23.8W,
   21-26.9S 039-29.6W, 21-26.4S 040-04.1W.
   TWO MILE BERTH REQUESTED.
2. CANCEL HYDROLANT 257/04(37,51), OPERATIONS COMPLETED.
3. CANCEL THIS MSG 190359Z FEB.

This area · survey operations

605 within 180 nm since 2000 · 23 in the last 12 months · 15 in force now

Season · when survey operations happen here

month of issue, all years in the archive

Timeline

Underwater operations in progress until further notice by cableship ile de brehat vicinity of trackline…cancels · 2004-02-12
Underwater operations in progress until further notice by cableship ile de brehat vicinity of trackline…replaced · 2004-02-12

Nearby now · within 120 nm

Underwater operations 0800Z to 1800Z daily 08 thru 22 aug by M/V marsanne and M/V comando b in 20-23.57S…Surveys · 52.1 nm
Underwater operations 1100Z to 2100Z daily 13 thru 22 aug by M/V comando b and M/V am kirti in 20-23.90S…Surveys · 52.2 nm
Underwater operations 1100Z to 2100Z daily 12 thru 21 aug by M/V comando b and M/V faneromeni in 20-23.67S…Surveys · 52.3 nm
Underwater operations 0800Z to 1800Z daily 11 thru 25 aug by M/V comando b and M/V faneromeni in 20-23.00S…Surveys · 52.7 nm
Underwater operations 1100Z to 2100Z daily 15 thru 29 aug by M/V comando b and M/V rosco banyan in 20-23.37S…Surveys · 53.1 nm
Underwater operations in progress until 27 aug by M/V navios felix and M/V comando b in 20-22.12S 040-08.38WSurveys · 53.2 nm
Underwater operations 0800Z to 1800Z daily 02 thru 16 aug by M/V comando b and M/V royal topaz in 20-21.62S…Surveys · 53.5 nm
Odas buoy temporarily established until 13 apr 27 in 21-34.20S 040-43.62WNav aids · 60.7 nm
Survey operations in progress until 09 jul 27 by M/V bgp dragon towing 250 meter long cable in area bound by…Surveys · 68.4 nm
Barra de itabapoana light 21-18.80S 040-57.90W unlit until 08 sep 26Nav aids · 69.6 nm
Survey operations in progress until 312200Z aug in area bound by 21-36.17S 041-00.00W, 21-36.05S 040-37.59W,…Surveys · 72.6 nm
Underwater operations 281000Z jul to 192100Z aug by M/V umi polaris in area bound by 21-53.65S 040-49.70W,…Surveys · 72.7 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.