Survey operations in progress until 15 apr by M/V ocean dream and M/V bgp pioneer eco warrior each towing…
South Atlantic Ocean · HYDROLANT 990/20
What this record establishes
Archived notice · 2020-04-10 08:44Z
This notice comes from the historical archive. Its archived status does not establish when or how the reported situation ended.
- Source and dates
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · NAVAREA V 118/20 151712Z MAR 20.. Issued 2020-03-16 12:34Z. First collected 2026-08-17 13:38Z; last seen in collection 2026-08-17 15:46Z. Collection dates record ingestion, not a new incident or a fresh field observation.
- Location covered
- South Atlantic Ocean. The map shows an area described by the warning; the listed coordinate is its representative center. Check the original wording for limits and qualifications.
Related notices and cancellation links
- Cancel HYDROLANT 990/20 and this msglater cancellation notice
Current notices and reporting history in the South Atlantic Ocean →
- issued
- 2020-03-16 12:34Z
- status
- Archived notice
- authority
- NAVAREA V 118/20 151712Z MAR 20.
- NAVAREA
- NAVAREA V · named as the source of this relay
- sea
- South Atlantic Ocean
- position
- -5.391, -34.383
- vessels
- M/V BGP PIONEER ECO WARRIOR EACHM/V OCEAN DREAM
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
WESTERN SOUTH ATLANTIC. BRAZIL-NORTHEAST COAST. DNC 01. 1. SURVEY OPERATIONS IN PROGRESS UNTIL 15 APR BY M/V OCEAN DREAM AND M/V BGP PIONEER ECO WARRIOR EACH TOWING SEVEN MILE LONG CABLES IN AREA BOUND BY 04-26.72S 034-09.18W, 04-42.64S 034-03.91W, 04-37.70S 033-46.03W, 04-50.32S 033-42.56W, 04-57.42S 034-01.66W, 05-08.80S 033-57.21W, 05-15.98S 033-35.05W, 05-28.45S 034-01.89W, 05-39.50S 033-27.76W, 05-46.37S 033-57.52W, 05-51.16S 033-27.37W, 05-52.79S 033-36.36W, 06-06.30S 033-55.53W, 06-13.06S 033-53.49W, 06-28.05S 034-42.02W, 05-40.57S 034-55.92W, 05-35.17S 034-55.90W, 05-35.13S 034-55.91W, 05-29.48S 034-56.60W, 05-26.75S 034-56.16W, 05-26.72S 034-56.15W, 05-26.71S 034-56.16W, 05-17.04S 034-56.67W, 05-17.03S 034-56.67W, 05-17.02S 034-56.67W, 05-17.01S 034-56.67W, 04-57.05S 035-01.87W, 04-57.03S 035-01.87W, 04-57.02S 035-01.88W, 04-40.99S 035-08.67W, 04-36.52S 035-01.19W, 04-25.95S 034-27.40W, 04-22.24S 034-16.74W. WIDE BERTH REQUESTED. 2. CANCEL THIS MSG 16 APR 20.
Reading this warning
- DNC (Digital Nautical Chart)
- A reference to one of the regions of NGA's Digital Nautical Chart, used to tell the reader which charts a warning affects.
- Survey operations
- A research or survey vessel is mapping the seabed or water column, often while towing equipment.
- Towed array / streamer
- Equipment towed a long way behind a vessel — sonar, a hydrophone cable, a sampling sled — invisible at the surface.
- Tow / towing
- A vessel towing another vessel, a barge or a structure — slow, hard to manoeuvre, and with a long line between.
- Area bound by
- Introduces a list of positions that are the corners of an area — the polygon the warning applies to.
- Position (degrees and minutes)
- How warnings write positions: degrees, a hyphen, then minutes, with N/S and E/W — 49-40.8N 003-43.8W.
- Wide berth requested
- Keep well clear — or, when a distance is given ("TWO MILE BERTH REQUESTED"), at least that far away.
- CANCEL THIS MSG
- The warning's own expiry: a line telling the reader when the message cancels itself.
Collected reports in this area · survey operations
59 within 180 nm since 2000 · 0 in the last 12 months · 0 listed in force now
Counts include repeat notices about the same situation. NGA archive coverage ends 2024-05; live collection began 2026-08-17. The period between them is incomplete. An empty year is not evidence that no hazards occurred.
- Survey operations in progress until 241000Z apr by M/V taurus in area bound by 06-56.53S 034-49.48W,…2024-03-16
- Survey operations in progress until 092100Z mar by M/V taurus in area bound by 06-50.45S 034-45.38W,…2024-03-05
- Underwater operations 0800Z to 2100Z daily 05 sep thru 05 mar 23 by M/V paracuru in 04-52.42S 036-22.45W2022-09-05
- Underwater operations 1100Z to 1900Z daily 15 thru 22 jun by M/V texas and M/V seamaster I in 05-42.08S…2021-06-14
- Underwater operations 1100Z to 1900Z daily 01 thru 06 jun by M/V texas and M/V seamaster I in 05-42.08S…2021-05-31
- Survey operations 03 thru 13 mar by M/V bgp pioneer towing 12500 meter long cable in area bound by 04-34.47S…2020-03-03
Month of issue in the collected archive
All available years combined. Uneven collection and repeat bulletins affect these counts; this chart does not measure the seasonality or probability of incidents.
Nearby notices listed in force · within 120 nm
- Odas buoy established in 05-09.46S 035-09.81WNav aids · 48.7 nm
- Odas buoy bravo rn-l temporarily established until 20 oct in 04-53.00S 035-46.01WNav aids · 88.2 nm
Worldwide in the collected sources
56 survey operations listed in force · see all
Record snapshot 2026-10-03 01:21Z; source collection times vary.
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.