Hydrographic survey 132300Z to 160700Z oct in area bound by 42-23-22N 131-31-20E, 42-37-37N 131-25-35E,…
Japan Sea · HYDROPAC 1766/03
What this record establishes
Archived notice · 2003-10-16 08:00Z
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) · VLADIVOSTOK 210/03 09 OCT 03. Issued 2003-10-10 21:30Z. 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
- Japan Sea. The map shows an area described by the warning; the listed coordinate is its representative center. Check the original wording for limits and qualifications.
Activity windows · 1 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2003-10-13 23:00Z | 2003-10-16 07:00Z | — | 56 h |
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
- issued
- 2003-10-10 21:30Z
- status
- Archived notice
- self-cancels
- 2003-10-16 08:00Z
- authority
- VLADIVOSTOK 210/03 09 OCT 03
- issued by
- VLADIVOSTOK
- sea
- Japan Sea
- position
- 42.778, 131.723
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
1. HYDROGRAPHIC SURVEY 132300Z TO 160700Z OCT IN AREA BOUND BY 42-23-22N 131-31-20E, 42-37-37N 131-25-35E, 42-56-44N 131-55-56E, 43-01-51N 131-55-56E, 43-01-51N 132-01-56E, 42-55-45N 132-01-56E, 42-37-37N 131-31-35E, 42-24-36N 131-37-03E. 2. CANCEL THIS MSG 160800Z OCT.
Reading this warning
- Survey operations
- A research or survey vessel is mapping the seabed or water column, often while towing equipment.
- Date-time group (DTG)
- A compact UTC timestamp — day, hour and minute followed by Z — such as 201500Z for the 20th at 15:00 UTC.
- 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.
- 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
17 within 180 nm since 2003 · 3 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 210001Z to 211200Z and 251400Z to 261000Z sep in area within five miles of 42-31.00N…2026-09-17
- Survey operations in progress until 291400Z sep in area bound by 42-14.00N 131-42.00E, 42-14.00N 132-10.00E,…2026-09-10
- Survey operations 100400Z to 291400Z sep by vessel in area bound by 42-14.00N 131-42.00E, 42-14.00N…2026-09-09
- Survey operations 27 jul thru 20 aug in area bound by 45-26.30N 139-13.20E, 47-26.10N 141-53.40E, 42-32.00N…2022-07-25
- Underwater operations 251400Z to 301400Z jun in area bound by 43-04.0N 134-27.6E, 43-04.0N 134-42.2E,…2021-06-25
- Underwater operations 162100Z to 232100Z apr in area bound by 43-04.0N 134-27.6E, 43-04.0N 134-42.2E,…2021-04-14
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
56 survey operations listed in force · see all
Record snapshot 2026-10-01 15:42Z; 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.