Survey operations by vessel BGP Prospector towing 12 cables of 7000 meters in western South Atlantic off Argentina, 7 mile berth requested.
South Atlantic Ocean · HYDROLANT 444/24
What this record establishes
Cancelled notice · 2026-08-14 18:10Z
This notice disappeared from the issuing source's in-force list. No explicit recovery or all-clear is established by that removal.
- Source and dates
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · NAVAREA VI 80/24 041335Z MAR 24.. Issued 2024-03-04 14:05Z. First collected 2026-08-17 13:41Z; last seen in collection 2026-08-17 15:50Z. 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
Current notices and reporting history in the South Atlantic Ocean →
- issued
- 2024-03-04 14:05Z
- status
- Cancelled notice
- authority
- NAVAREA VI 80/24 041335Z MAR 24.
- NAVAREA
- NAVAREA VI · named as the source of this relay
- sea
- South Atlantic Ocean
- position
- -53.535, -66.612
- vessel
- M/V BGP PROSPECTOR · 75 messages
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:41Z
Original warning text
WESTERN SOUTH ATLANTIC. ARGENTINA. DNC 07. 1. SURVEY OPERATIONS IN PROGRESS UNTIL FURTHER NOTICE BY M/V BGP PROSPECTOR TOWING 12 7000 METER LONG CABLES IN AREA BOUND BY 52-54.57S 067-56.75W, 52-53.65S 067-26.68W, 52-59.48S 067-20.51W, 52-53.89S 067-05.72W, 52-56.91S 066-50.36W, 53-14.47S 066-32.16W, 53-14.38S 065-39.25W, 54-11.52S 065-38.73W, 54-11.79S 066-22.63W, 54-03.79S 066-35.55W, 53-55.67S 066-59.25W, 53-01.83S 067-53.97W. SEVEN MILE BERTH REQUESTED. 2. CANCEL HYDROLANT 386/24.
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.
- Until further notice
- The operation or danger has no scheduled end; the warning stays in force until a later message cancels it.
- 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.
- Cancellation reference
- A line that cancels an earlier warning by its number, such as CANCEL HYDROLANT 1085/12.
- HYDROLANT
- The U.S. long-range warning series for Atlantic waters outside NAVAREA IV, including the eastern Atlantic, the Mediterranean and adjoining seas.
Collected reports in this area · survey operations
13 within 180 nm since 2011 · 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 further notice by m\v bgp prospector towing 12 8100 meter long cables in…2024-02-24
- Survey operations in progress until further notice by M/V bgp pioneer towing seven mile long cable in area…2017-11-22
- Survey operations in progress until further notice by M/V A.R.A2017-08-17
- Oceanographic operations in progress until further notice by M/V puerto deseado in 54-33.5S 062-49.7W2016-04-10
- Oceanographic operations in progress until further notice by M/V puerto deseado in 54-38.3S 062-49.0W2016-04-10
- Oceanographic operations in progress until further notice by M/V puerto deseado vicinity 54-55.6S 067-07.1W2014-04-04
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
No other collected notice is currently listed in force within this radius. This does not establish safe conditions.
Worldwide in the collected sources
50 survey operations listed in force · see all
Record snapshot 2026-09-25 01:54Z; 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.