Hydrographic operations 062100Z to 081000Z jan in areas: a. bound by 17-15N 118-15E, 17-15N 117-15E,…
South China Sea · HYDROPAC 31/00
What this record establishes
Archived notice · 2000-01-07 05:50Z
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) · CTG 72.2 052100Z JAN 00; RCC AUSTRALIA 060145Z JAN 00. Issued 2000-01-06 07:20Z. 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 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 China Sea →
Activity windows · 1 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2000-01-06 21:00Z | 2000-01-08 10:00Z | — | 37 h |
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
- issued
- 2000-01-06 07:20Z
- status
- Archived notice
- self-cancels
- 2000-01-08 11:00Z
- authority
- CTG 72.2 052100Z JAN 00; RCC AUSTRALIA 060145Z JAN 00
- issued by
- CTG
- sea
- South China Sea
- position
- 19.240, 118.826
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
1. HYDROGRAPHIC OPERATIONS 062100Z TO 081000Z JAN
IN AREAS:
A. BOUND BY 17-15N 118-15E, 17-15N 117-15E,
20-35N-117-15E, 20-35N 121-10E, 19-45N 121-10E.
B. BETWEEN 18-45N 22-15N AND 122-20E 126-00E.
2. CANCEL HYDROPAC 1437/99(75), TUNA CAGE REMOVED.
3. CANCEL THIS MSG 081100Z JAN.
Reading this warning
- 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.
- 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.
- Cancellation reference
- A line that cancels an earlier warning by its number, such as CANCEL HYDROLANT 1085/12.
- HYDROPAC
- The U.S. long-range warning series for the Pacific outside NAVAREA XII and for the Indian Ocean, Persian Gulf and adjoining seas.
- CANCEL THIS MSG
- The warning's own expiry: a line telling the reader when the message cancels itself.
Collected reports in this area · other warnings
11 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.
- Five persons overboard vicinity 18-11N 116-55E2015-10-11
- Five persons overboard vicinity 18-21N 116-15E2015-10-09
- 100 meter long orange oil boom adrift in 18-48N 118-29E at 010808Z sep2015-09-01
- 200 meter long orange and black hose adrift vicinity 17-12.7N 117-39.0E at 140215Z aug2015-08-14
- Two persons abandoned 24 foot M/V sunny, orange hull, in 16-43.5N 118-32.7E2008-05-12
- M/V front tobago capsizing and in need of assistance vicinity 19-26N 119-26E at 110310Z mar2003-03-11
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
21 other warnings listed in force · see all
Record snapshot 2026-10-03 21:45Z; source collection times vary.
Other
Everything the classifier did not place elsewhere. All current other warnings →
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.