Surveys
Hydrographic survey in progress until further notice by M/V ridley thomas along trackline between 01-24.3S…
Eastern Atlantic · Gulf of Guinea · Sao Tome and Principe · HYDROLANT 1990/16
- issued
- 2016-08-06 16:45Z
- status
- cancelled 2016-08-10 20:50Z (archive)
- authority
- NAVAREA II 234/16 061655Z AUG 16.
- sea
- South Atlantic Ocean
- position
- -0.550, 6.207
- source
- nga_json · first seen 2026-08-17 13:38Z
Original warning text
EASTERN ATLANTIC. GULF OF GUINEA. SAO TOME AND PRINCIPE. DNC 01. HYDROGRAPHIC SURVEY IN PROGRESS UNTIL FURTHER NOTICE BY M/V RIDLEY THOMAS ALONG TRACKLINE BETWEEN 01-24.3S 005-39.0E AND 00-18.3N 006-45.9E. WIDE BERTH REQUESTED.
This area · survey operations
9 within 180 nm since 2005 · 0 in the last 12 months · 0 in force now
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10
15
20
23
- Survey operations in progress until 010001Z jul by M/V bgp prospector towing ten six mile long cables in…2023-06-25
- Survey operations 06 jun thru 30 sep by M/V bgp prospector towing ten 8000 meter long cables in area bound…2021-06-05
- Survey operations in progress until 01 jul by M/V polarcus adira towing 12 six mile long cables in area…2020-03-15
- Survey operations in progress until 16 may 20 by M/V polarcus naila towing ten 8100 meter long cables in…2020-03-15
- Survey operations in progress until further notice by M/V osprey explorer towing 12000 meter long cable in…2017-05-14
- Underwater operations 260600Z may to 151800Z jun by M/V bourbon atlas within two miles of 01-09.3S 008-28.5E2015-05-23
Season · when survey operations happen here
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month of issue, all years in the archive
Timeline
- Cancel HYDROLANT 1990/16 and this msg, survey completedcancelled by · 2016-08-10
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.