Survey operations 18 thru 26 oct by M/V discovery 01 in vicinity 09-45.38N 107-58.71E
South China Sea · HYDROPAC 3520/17
What this record establishes
Archived notice · 2017-10-27 00:01Z
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) · HAIPHONG RADIO 141254Z OCT 17.. Issued 2017-10-14 13:05Z. 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 China Sea. The parsed report position is 9.756, 107.978. It is a position in the source message, not a live location. Check the original wording for limits and qualifications.
Current notices and reporting history in the South China Sea →
- issued
- 2017-10-14 13:05Z
- status
- Archived notice
- authority
- HAIPHONG RADIO 141254Z OCT 17.
- issued by
- HAIPHONG RADIO
- sea
- South China Sea
- position
- 9.756, 107.978
- vessel
- M/V DISCOVERY 01 · 6 messages
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
SOUTH CHINA SEA. VIETNAM. DNC 11. 1. SURVEY OPERATIONS 18 THRU 26 OCT BY M/V DISCOVERY 01 IN VICINITY 09-45.38N 107-58.71E. WIDE BERTH REQUESTED. 2. CANCEL THIS MSG 27 OCT 17.
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.
- 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
21 within 180 nm since 2013 · 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 10 oct by M/V polarcus alima towing six four mile long cables in area…2020-09-09
- Survey operations in progress in area bound by 10-29.64N 107-49.46E, 10-29.64N 107-49.74E, 10-29.37N…2019-09-03
- Survey operations 20 thru 27 jun by M/V ptsc surveyor in 08-21.1N 108-42.5E2019-06-19
- Survey operations in progress until 25 jun in area bound by 11-50.00N 109-16.00E, 11-50.00N 109-25.53E,…2019-04-11
- Survey operations 02 thru 09 sep by M/V ptsc researcher in 08-33.98N 108-43.33E2018-08-31
- Salvage operations in progress until further notice in 11-07.40N 108-53.78E2018-05-15
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
- Dangerous wreck in 10-22.31N 107-46.96EWrecks · 38.7 nm
- Sunken wreck exists in 10-22.31N 107-46.96EWrecks · 38.7 nm
- Oil rig reported to exists in 07-47.5N 108-12.0EWrecks · 118.7 nm
Worldwide in the collected sources
56 survey operations listed in force · see all
Record snapshot 2026-10-01 20:26Z; 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.