Surveys

Hydrographic survey 20 thru 30 nov by M/V sirius in area bound by 27-14.5S 048-45.0W, 27-14.5S 047-00.0W,…

HYDROLANT 3867/00

issued: 2000-11-17 07:25Z
status: cancelled 2000-12-01 00:00Z (archive)
cancels: HYDROLANT 3357/00
authority: NAVAREA V 2422/00 170400Z NOV 00; NAVAREA V 2428/00 170400Z NOV 00
sea: South Atlantic Ocean
position: -27.608, -47.629
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

1. HYDROGRAPHIC SURVEY 20 THRU 30 NOV BY M/V SIRIUS
   IN AREA BOUND BY 27-14.5S 048-45.0W,
   27-14.5S 047-00.0W, 28-20.0S 047-00.0W,
   27-20.0S 048-45.0W. WIDE BERTH REQUESTED.
2. CANCEL HYDROLANT 3357/00.
3. CANCEL THIS MSG 01 DEC.

This area · survey operations

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

Season · when survey operations happen here

month of issue, all years in the archive

Timeline

Dgps station at canal dos abrolhos light 17-58S 038-42W inoperativecancels · 2000-09-30
Dgps station at canal dos abrolhos light 17-58S 038-42W inoperativereplaced · 2000-09-30
Seismic survey in progress until 17 nov by M/V cgg harmattan towing six 6482 meter long cables in area bound…replaced · 2000-11-16

Nearby now · within 120 nm

Scientific bouy, yellow, fl y 20 sec established in 27-24.38S 047-15.92WSurveys · 22.8 nm
Ponta da galheta light 27-34.55S 048-24.99W unlit until 31 augNav aids · 42 nm
Survey operations 10 thru 17 aug by M/V ramform titan towing 12 9000 meter long cables in area bound by…Surveys · 99.3 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.