Eastern China Sea
IHO sea area 50 · 118° to 131° E, 24° to 33° N
- in force
- 1
- last 12 months
- 7
- archive messages
- 545
- categories
- 15
What the archive shows
545 messages are recorded since 1977-02-05 for the Eastern China Sea. The selection uses the IHO sea area; a message may describe an exercise, equipment outage or continuing operation as well as a hazard report.
Cable ops accounts for 220 of 545 recorded messages (40%), the largest category group in this selection.
The NGA historical archive froze in 2024-05; live collection began 2026-08-17. Counts around that gap are incomplete, and changes in reporting volume do not establish changes in incident frequency.
- An older warning still listed in force · issued 2023-07-28 08:00ZA large buoy exists in the East China Sea at 31 degrees north, 124 degrees east.
In force now · 1
Longest in force
By year
By month (all years)
By category · available archive
| Cable ops | 220 | 40% |
| Incidents | 129 | 24% |
| Quakes | 100 | 18% |
| Ordnance | 24 | 4% |
| Nav aids | 14 | 3% |
| Surveys | 11 | 2% |
| Derelicts | 8 | 1% |
| Exercises | 8 | 1% |
| Missiles | 7 | 1% |
| Containers | 6 | 1% |
| Other | 6 | 1% |
| Wrecks | 4 | 1% |
| Volcanic | 3 | 1% |
| Debris | 3 | 1% |
| Spills | 2 | 0% |
Ports on this sea · 36
Busiest first by annual vessel calls (IMF PortWatch); each port page shows the warnings within 60 nm, its World Port Index profile and monthly port calls.
- Shanghai · China13 archived
- Ningbo · China2 archived
- Suzhou (Taicang) · China3 archived
- Nantong · China3 archived
- Zhoushan · China3 archived
- Shanghai (Yangshan) · China24 archived
- Jiangyin · China1 archived
- Keelung · Taiwan Province of China136 archived
- Fuzhou · China13 archived
- Zhenjiang New Area · China1 archived
- Kagoshima · Japan19 archived
- Zhapu · China3 archived
- Naha · Japan31 archived
- Changzhou · China1 archived
- Nanjing · China0 archived
Archive · 544 cancelled
- USGS-US6000TGBM · Quakes2026-07-28 → 2026-07-3115 km ssw of honmachi, japan
- USGS-US6000TGB9 · Quakes2026-07-28 → 2026-07-31The 2026 kumamoto region, japan earthquake
- USGS-US6000T9SJ · Quakes2026-07-03 → 2026-07-06147 km nne of hirara, japan
- USGS-US6000SYW4 · Quakes2026-05-20 → 2026-05-2311 km nne of wadomari, japan
- USGS-US7000S1EN · Quakes2026-03-02 → 2026-03-0555 km nw of hirara, japan
- USGS-US7000S17Q · Quakes2026-03-01 → 2026-03-0417 km sw of ibusuki, japan
- USGS-US7000RLHA · Quakes2025-12-30 → 2026-01-0219 km nne of wadomari, japan
- USGS-US6000QYT7 · Quakes2025-08-07 → 2025-08-1016 km nnw of yonakuni, japan
- USGS-US7000QAYF · Quakes2025-07-06 → 2025-07-09103 km n of tatsugō, japan
- USGS-US7000QADP · Quakes2025-07-03 → 2025-07-06104 km n of tatsugō, japan
- USGS-US7000QA5E · Quakes2025-07-02 → 2025-07-0598 km nnw of tatsugō, japan
- USGS-US7000NV3A · Quakes2024-11-30 → 2024-12-0391 km ne of hirara, japan
- HYDROPAC 1445/24 · Cable ops2024-05-02 → 2024-05-11Cable operations in progress until 10 may by cableship resolute in area bound by 25-27.30N 122-27.59E,…
- HYDROPAC 1091/24 · Cable ops2024-04-05 → 2024-05-06Cable operations 06 apr until further notice by cableship peter faber in area bound by 25-45.62N 121-34.67E,…
- HYDROPAC 3887/23 · Incidents2023-12-11 → 2023-12-11Distress signal received on 406 mhz from 16 meter F/V meng xia yu in vicinity 27-08.00N 122-57.00E at…
- HYDROPAC 3769/23 · Cable ops2023-11-28 → 2023-12-14Cable operations by cableship kddi ocean link: a. 03 thru 08 dec, alternate 09 thru 11 dec in area bound by…
- USGS-US6000LFVJ · Quakes2023-10-16 → 2023-10-1946 km nne of hirara, japan
- USGS-US7000KWG2 · Quakes2023-09-18 → 2023-09-21191 km n of hirara, japan
- HYDROPAC 2457/23 · Debris2023-07-28 → 2023-07-31Buoy reported adrift in vicinity 31-00.00N 124-00.00E
- HYDROPAC 1723/23 · Cable ops2023-05-23 → 2023-05-29Cable operations 24 thru 30 may, alternate 31 may thru 02 jun by cableship kddi ocean link in area bound by…
Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts.