Survey operations in progress until 27 may by M/V northern endeavour along trackline joining 34-54N 128-59E,…
Japan Sea · HYDROPAC 1544/16
What this record establishes
Archived notice · 2016-05-28 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) · NORTHERN ENDEAVOUR 250150Z MAY 16.. Issued 2016-05-25 07:17Z. 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 the reported line or operation extent; it is not a vessel track. Check the original wording for limits and qualifications.
- issued
- 2016-05-25 07:17Z
- status
- Archived notice
- authority
- NORTHERN ENDEAVOUR 250150Z MAY 16.
- issued by
- NORTHERN ENDEAVOUR
- sea
- Japan Sea
- position
- 33.125, 127.967
- vessel
- M/V NORTHERN ENDEAVOUR · 20 messages
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
EAST CHINA SEA. KOREA STRAIT. DNC 23. 1. SURVEY OPERATIONS IN PROGRESS UNTIL 27 MAY BY M/V NORTHERN ENDEAVOUR ALONG TRACKLINE JOINING 34-54N 128-59E, 32-24N 127-00E, 32-04N 128-51E. 2. CANCEL THIS MSG 28 MAY 16.
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.
- Track line joining
- Introduces a route through a series of positions — a cable route, a tow's track or a survey line.
- 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
4 within 180 nm since 1998 · 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 21 thru 23 may by M/V northern endeavour in area bound by 35-09N 129-12E, 35-10N 129-13E,…2016-05-20
- Survey operations 20 aug thru 30 sep by M/V geco emerald towing 4500 meter long cable in area bound by…2002-08-17
- Underwater operations in progress until 31 jan within ten miles of 33-40N 128-15E1998-12-28
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 2026-10-03 01:49Z; 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.