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 1521/08 · Cable ops2008-08-08 → 2008-10-01Cable repair operations in progress until 30 sep by cableship cable retriever vicinity of trackline joining…
- USGS-USP000GBMX · Quakes2008-07-08 → 2008-07-11107 km nne of nago, japan
- HYDROPAC 1189/08 · Incidents2008-06-24 → 2008-08-13Distress signals received on 406 mhz at 242300Z jun in: 1. 27-22.33N 133-11.45E
- HYDROPAC 997/08 · Cable ops2008-05-23 → 2008-06-13Submarine cable operations 27 may thru 20 jun by M/V kdd ocean link in areas bound by: a. 30-52.1N…
- HYDROPAC 923/08 · Cable ops2008-05-13 → 2008-06-06Submarine cable operations in progress until 31 may, alternate 01 thru 05 jun by cableship lodbrog vicinity…
- HYDROPAC 867/08 · Incidents2008-05-06 → 2008-05-06Distress signal received on 243 mhz in 27-05.5N 121-49.4E at 061134Z may
- HYDROPAC 829/08 · Cable ops2008-05-01 → 2008-05-13Cable operations in progress until 15 may, alternate 16 thru 20 may by M/V peter faber vicinity of trackline…
- HYDROPAC 808/08 · Cable ops2008-04-28 → 2008-05-13Submarine cable operations in progress until 12 may vicinity of trackline joining 34-46-25N 128-38-26E,…
- HYDROPAC 419/08 · Incidents2008-03-04 → 2008-04-15Distress signal received on 406 mhz in 31-20-24N 121-35-32E at 032136Z mar
- HYDROPAC 317/08 · Incidents2008-02-20 → 2008-04-0598 meter M/V captain uskov, blue hull, unreported russia to hong kong
- HYDROPAC 257/08 · Cable ops2008-02-11 → 2008-02-27Cable operations in progress until 26 feb by cableship ile de bats vicinity of trackline joining 31-48.1N…
- HYDROPAC 169/08 · Incidents2008-01-28 → 2008-02-23M/V captain uskov, 17 persons on board unreported
- HYDROPAC 2276/07 · Cable ops2007-12-28 → 2008-02-11Submarine cable operations in progress until 10 feb 08 vicinity of trackline joining 31-48.1N 122-13.1E,…
- HYDROPAC 2212/07 · Cable ops2007-12-15 → 2007-12-28Submarine cable operations in progress until 30 jan 08, vicinity of trackline joining 31-48.1N 122-13.1E,…
- HYDROPAC 2130/07 · Cable ops2007-12-01 → 2007-12-08Cable operations in progress until 07 dec by cableship ile de bats vicinity of trackline joining 25-13.1N…
- HYDROPAC 1914/07 · Cable ops2007-11-02 → 2007-11-01Cable operations in progress until 30 nov by cableship ile de bats along trackline joining 25-13.1N…
- HYDROPAC 1879/07 · Incidents2007-10-30 → 2007-12-21Vessel on fire vicinity 30-00N 125-00E at 300718Z oct
- HYDROPAC 1868/07 · Cable ops2007-10-28 → 2007-11-02Cable operations in progress until 23 nov by cableship ile de bats along trackline joining 25-31.1N…
- HYDROPAC 1833/07 · Cable ops2007-10-24 → 2007-10-28Cable operations 29 oct thru 19 nov along trackline joining 25-31.1N 121-24.1E, 25-20.6N 121-26.2E, 25-28.9N…
- HYDROPAC 1727/07 · Incidents2007-10-06 → 2007-10-06Distress signal received on 406 mhz in 32-09-14N 123-13-29E at 060832Z oct
Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts.