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 556/10 · Cable ops2010-03-20 → 2010-03-26Cable repair operations in progress until 04 apr by kdd ocean link in areas bound by: a. 30-35.5N 125-23.5E,…
- HYDROPAC 441/10 · Cable ops2010-03-06 → 2010-03-18Cable repair operations 08 thru 17 mar by kdd ocean link in area bound by 30-27.3N 124-31.0E, 30-20.0N…
- HYDROPAC 352/10 · Nav aids2010-02-24 → 2010-03-05Nga chart 94160 (9TH ed)
- USGS-USP000H6KK · Quakes2010-01-25 → 2010-01-2827 km nnw of nishinoomote, japan
- USGS-USP000H659 · Quakes2010-01-15 → 2010-01-18151 km wnw of naha, japan
- HYDROPAC 2424/09 · Incidents2009-12-26 → 2009-12-26Distress signal received from vessel racer express in 31-03N 123-53E
- HYDROPAC 2369/09 · Cable ops2009-12-16 → 2009-12-20Submarine cable operations in progress until 19 dec by cableship lodbrog vicinity 30-53.5N 123-01.7E
- USGS-USP000H3JP · Quakes2009-10-30 → 2009-11-0298 km nne of naze, japan
- USGS-USP000H1XT · Quakes2009-09-28 → 2009-10-01146 km n of nago, japan
- HYDROPAC 1590/09 · Cable ops2009-09-04 → 2009-09-11Cable repair operations in progress until 30 nov by cableship cable retriever vicinity of trackline between…
- USGS-USP000H16F · Quakes2009-09-03 → 2009-09-0632 km wsw of makurazaki, japan
- HYDROPAC 831/09 · Incidents2009-04-27 → 2009-05-04Derelict 25 ton vessel princess taiping capsized and adrift in 25-27-37N 122-21-52E at 270056Z apr
- HYDROPAC 628/09 · Cable ops2009-03-27 → 2009-04-13Cable operations 31 mar thru 12 apr by kddi ocean link in area bound by 31-44.5N 124-35.5E, 31-19.0N…
- USGS-USP000GVEX · Quakes2009-03-26 → 2009-03-29155 km nw of nago, japan
- HYDROPAC 461/09 · Cable ops2009-03-01 → 2009-03-12Cable repair operations 05 thru 20 mar by M/V kddi ocean link in area bound by 31-08.3N 122-58.5E, 31-06.1N…
- HYDROPAC 317/09 · Cable ops2009-02-10 → 2009-03-01Cable repair operations 11 thru 28 feb by M/V kddi ocean link in area bound by 31-21.6N 122-35.0E, 31-21.2N…
- HYDROPAC 67/09 · Cable ops2009-01-08 → 2009-01-21Submarine cable operations 12 thru 20 jan by M/V kddi ocean link in area bound by 31-21.6N 122-35.0E,…
- HYDROPAC 2536/08 · Cable ops2008-12-22 → 2009-01-02Submarine cable operations 24 dec thru 01 jan 09 by cableship kddi ocean link in area bound by 32-57.8N…
- HYDROPAC 1887/08 · Cable ops2008-09-26 → 2008-10-10Submarine cable operations 30 sep thru 10 oct by cableship kddi ocean link in area bound by 25-27.0N…
- HYDROPAC 1601/08 · Wrecks2008-08-21 → 2008-09-20Nga chart 94016 (2ND ed)
Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts.