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
77
97
98
99
00
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
By month (all years)
J
F
M
A
M
J
J
A
S
O
N
D
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% |
| Other | 6 | 1% |
| Containers | 6 | 1% |
| Wrecks | 4 | 1% |
| Debris | 3 | 1% |
| Volcanic | 3 | 1% |
| Spills | 2 | 0% |
Archive · 544 cancelled
- HYDROPAC 835/12 · Incidents2012-03-23 → 2012-03-27Distress signal received from F/V kasuga maru in 28-49.9N 128-23.0E
- HYDROPAC 429/12 · Cable ops2012-02-15 → 2012-02-21Cable repair operations by M/V kddi ocean link: a. in progress until 17 feb, alternate 18 thru 20 feb in…
- HYDROPAC 408/12 · Nav aids2012-02-14 → 2015-12-20Taiwan
- HYDROPAC 296/12 · Cable ops2012-02-03 → 2012-02-15Cable repair operations in progress until 17 feb, alternate 18 thru 20 feb by M/V kddi ocean link in areas…
- HYDROPAC 292/12 · Incidents2012-02-03 → 2012-02-11Distress signal received on 406 mhz in 30-51-10N 125-32-11E at 030433Z feb
- HYDROPAC 189/12 · Cable ops2012-01-22 → 2012-02-03Cable repair operations 27 jan thru 12 feb, alternate 13 thru 17 feb by M/V kddi ocean link in area bound by…
- HYDROPAC 3485/11 · Cable ops2011-12-14 → 2011-12-27Cable repair operations in progress until 25 dec, alternate 26 thru 28 dec by M/V kddi ocean link in area…
- HYDROPAC 3170/11 · Cable ops2011-11-10 → 2011-11-26Cable repair operations 14 thru 22 nov, alternate 23 thru 25 nov by M/V kddi ocean link in area bound by…
- USGS-USP000JAJD · Quakes2011-11-08 → 2011-11-11238 km wnw of naha, japan
- USGS-USP000JA40 · Quakes2011-10-30 → 2011-11-02101 km n of yonakuni, japan
- HYDROPAC 2008/11 · Exercises2011-07-13 → 2011-07-18Gunnery exercises 1600Z to 1000Z commencing daily 13 thru 17 jul in area bound by 30-03N 122-24E, 30-03N…
- HYDROPAC 1637/11 · Cable ops2011-06-03 → 2011-07-01Cable operations in progress until 30 jun by cableship cable retriever in area bound by 25-30.9N 121-27.8E,…
- HYDROPAC 1202/11 · Incidents2011-04-19 → 2011-05-07Distress signal received on 406 mhz in 26-13N 127-41E at 191309Z apr
- USGS-USP000J01W · Quakes2011-04-16 → 2011-04-19123 km nnw of ishigaki, japan
- HYDROPAC 1043/11 · Incidents2011-04-03 → 2011-04-232.8 ton F/V sakura, white hull, one person on board, unreported 26-14.7N 127-27.0E at 011630Z apr to fishing…
- HYDROPAC 1470/10 · Incidents2010-07-16 → 2010-08-28M/V dlc roro-i, 11 persons on board, unreported jinhae (35-09N 128-40E) to manila (14-35N 120-58E)
- HYDROPAC 1185/10 · Derelicts2010-06-07 → 2010-06-10Derelict 90 meter barge midlandia, black hull, adrift vicinity 25-49N 120-46E
- HYDROPAC 1128/10 · Cable ops2010-05-31 → 2010-06-11Cable repair operations 05 thru 10 jun by cableship wave venture vicinity 25-35N 121-37E
- HYDROPAC 857/10 · Cable ops2010-04-24 → 2010-05-01Cable operations in progress until 30 apr by cableship lodbrog vicinity 30-46.3N 123-20.4E
- HYDROPAC 603/10 · Cable ops2010-03-26 → 2010-04-07Cable repair operations in progress until 12 apr by M/V kdd ocean link in areas bound by: a. 30-35.5N…
Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts.