Surveys

Survey operations in progress until further notice by M/V ramform tethys and M/V thor freyja and M/V olga…

Eastern South Atlantic · Angola · HYDROLANT 1664/21

issued: 2021-06-22 20:02Z
status: cancelled 2021-07-01 21:09Z (archive)
authority: NAVAREA VII 198/21 221948Z JUN 21.
position: -7.813, 12.769
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

EASTERN SOUTH ATLANTIC.
ANGOLA.
DNC 01.
SURVEY OPERATIONS IN PROGRESS UNTIL FURTHER
NOTICE BY M/V RAMFORM TETHYS AND M/V THOR FREYJA
AND M/V OLGA TOWING 12 8025 METER LONG CABLES
IN AREA BOUND BY
07-02.85S 012-36.00E, 08-31.28S 013-06.58E,
08-34.68S 012-56.31E, 07-06.33S 012-25.73E.
SEVEN MILE BERTH REQUESTED.

This area · survey operations

68 within 180 nm since 2004 · 1 in the last 12 months · 1 in force now

Season · when survey operations happen here

month of issue, all years in the archive

Timeline

Survey operations in progress until further notice by M/V ramform tethys towing 8025 meter long cables in…cancelled by · 2021-07-01

Nearby now · within 120 nm

Nothing else in force within 120 nm.

Worldwide now

75 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.