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 1079/05 · Cable ops2005-07-07 → 2005-08-01Seismic survey in progress until 31 jul by M/V polar duke towing 4000 meter long cable in area bound by…
- HYDROPAC 278/05 · Cable ops2005-02-16 → 2005-02-23Cable repair operations 17 thru 25 feb by cableship kdd pacific link in area bound by 25-14.4N 122-47.2E,…
- HYDROPAC 88/05 · Incidents2005-01-14 → 2005-01-14Distress signal received on 406 mhz in 28-14-13N 125-37-15E at 140445Z jan
- HYDROPAC 1758/04 · Cable ops2004-11-08 → 2004-11-16Cable repair operations 08 thru 15 nov by cableship cable retriever vicinity of trackline between 24-50.0N…
- HYDROPAC 1230/04 · Derelicts2004-07-28 → 2004-08-04Derelict 21 meter vessel adrift in 25-50N 121-16E at 271030Z jul
- HYDROPAC 712/04 · Cable ops2004-04-22 → 2004-05-26Cable laying operations in progress until 25 may by cableship heimdal along trackline between: A.25-43.3N…
- HYDROPAC 701/04 · Surveys2004-04-20 → 2004-07-21Underwater operations 21 apr thru 20 jul by M/V nan hai 5 within one mile of 29-07.5N 124-55.6E
- HYDROPAC 213/04 · Cable ops2004-02-02 → 2004-02-20Cable repair operations in progress until 28 feb by M/V kdd pacific link along trackline between 25-28N…
- HYDROPAC 155/04 · Cable ops2004-01-26 → 2004-01-31Cable repair operations in progress until 30 jan by M/V kdd pacific link in area bound by 25-38N 121-24E,…
- HYDROPAC 108/04 · Cable ops2004-01-20 → 2004-01-26Cable repair operations in progress until 26 jan by M/V kdd pacific link in area bound by 25-38N 121-24E,…
- HYDROPAC 60/04 · Cable ops2004-01-13 → 2004-02-16Cable repair operations in progress until 15 feb by cableship cable retriever vicinity of trackline between…
- HYDROPAC 34/04 · Cable ops2004-01-09 → 2004-01-21Cable repair operations in progress until 20 jan by M/V kdd pacific link in area bound by 25-38N 121-24E,…
- HYDROPAC 2243/03 · Cable ops2003-12-28 → 2004-01-09Cable repair operations 012300Z to 130800Z jan by M/V kdd pacific link in area bound by 25-38N 121-24E,…
- HYDROPAC 2223/03 · Incidents2003-12-24 → 2004-02-07Man overboard from M/V kh rerikh vicinity 27-00N 122-00E at 232130Z dec
- USGS-USP000CFWP · Quakes2003-12-23 → 2003-12-26174 km nne of hirara, japan
- HYDROPAC 1924/03 · Cable ops2003-11-05 → 2003-11-11Cable repair operations in progress until 07 nov, alternate 08 thru 10 nov by M/V kouki maru in area bound…
- HYDROPAC 1921/03 · Derelicts2003-11-05 → 2003-11-12Derelict F/V, white hull with blue trim, adrift in 26-11.8N 125-31.3E at 040745Z nov
- HYDROPAC 1876/03 · Cable ops2003-10-28 → 2003-11-05Cable repair operations 29 oct thru 03 nov, alternate 04 thru 06 nov by M/V kouki maru in area bound by…
- HYDROPAC 1735/03 · Cable ops2003-10-07 → 2003-12-01Submarine cable operations 080001Z oct to 010001Z dec vicinity of trackline between 29-49.0N 124-33.5E and…
- USGS-USP000C8VE · Quakes2003-09-27 → 2003-09-30118 km wnw of naze, japan
Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts.