Survey operations in progress until further notice by M/V hai yang shi you 760 towing seven mile long cable…
South Atlantic Ocean · HYDROLANT 1409/18
What this record establishes
Archived notice · 2018-05-07 19:02Z
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 VI 214/18 042301Z MAY 18.. Issued 2018-05-04 23:02Z. 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
- Survey operations in progress until further notice by M/V hai yang shi you 760 towing seven mile long cable…cancelled by this notice
- Cancel HYDROLANT 1409/18 and this msglater cancellation notice
Current notices and reporting history in the South Atlantic Ocean →
- issued
- 2018-05-04 23:02Z
- status
- Archived notice
- authority
- NAVAREA VI 214/18 042301Z MAY 18.
- NAVAREA
- NAVAREA VI · named as the source of this relay
- sea
- South Atlantic Ocean
- position
- -38.893, -54.209
- vessel
- M/V HAI YANG SHI YOU 760 · 4 messages
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
WESTERN SOUTH ATLANTIC. ARGENTINA. DNC 07. 1. SURVEY OPERATIONS IN PROGRESS UNTIL FURTHER NOTICE BY M/V HAI YANG SHI YOU 760 TOWING SEVEN MILE LONG CABLE IN AREA BOUND BY 36-50S 055-00W, 38-10S 052-00W, 41-00S 053-20W, 39-30S 056-30W. EIGHT MILE BERTH REQUESTED. 2. CANCEL HYDROLANT 505/18.
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
63 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 further notice by M/V pxgeo 2 towing ten 8100 meter long cables in area…2024-04-09
- Survey operations in progress until further notice by M/V pxgeo 2 towing ten 8100 meter long cabes in area…2024-03-13
- Survey operations in progress until further notice by M/V bgp prospector towing ten 8000 meter long cables…2023-10-12
- Survey operations in progress until further notice by M/V bgp pioneer towing seven mile long cable in area…2017-10-18
- Survey operations in progress until further notice by M/V bgp pioneer towing seven mile long cable in area…2017-10-17
- Survey operations in progress until further notice by M/V bgp pioneer towing seven mile long cable in area…2017-10-17
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 2026-09-24 23:16Z; 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.