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% |
| Containers | 6 | 1% |
| Other | 6 | 1% |
| Wrecks | 4 | 1% |
| Volcanic | 3 | 1% |
| Debris | 3 | 1% |
| Spills | 2 | 0% |
Archive · 544 cancelled
- HYDROPAC 270/15 · Cable ops2015-01-24 → 2015-01-25Cable repair operations in progress until 01 mar by cableship lodbrog in area bound by 25-47-21.0N…
- HYDROPAC 227/15 · Cable ops2015-01-21 → 2015-01-24Cable repair operations 23 thru 29 jan by cableship lodbrog in vicinity 25-49.0N 121-41.4E
- HYDROPAC 141/15 · Incidents2015-01-14 → 2015-03-12Distress signal received on 406 mhz in 30-14-16N 122-11-45E at 141210Z jan
- HYDROPAC 3755/14 · Nav aids2014-12-15 → 2014-12-16NAVTEX station naha 26-05N 127-40E off air
- USGS-USC000T5BU · Quakes2014-12-10 → 2014-12-1377 km ne of jiufen, taiwan
- HYDROPAC 3599/14 · Cable ops2014-12-01 → 2015-01-21Cable laying operations in progress until 27 dec, alternate 28 dec thru 20 jan 15 by cableship segero…
- HYDROPAC 3580/14 · Incidents2014-11-30 → 2014-12-06Distress signal received on 406 mhz in 30-57-48N 123-32-20E at 300559Z nov
- HYDROPAC 3547/14 · Incidents2014-11-28 → 2014-12-06Distress signal received on 406 mhz in 26-36-13N 122-39-03E at 280620Z nov
- HYDROPAC 3486/14 · Cable ops2014-11-22 → 2014-12-08Cable repair operations 27 nov thru 05 dec, alternate 06 thru 10 dec by M/V ocean link in area bound by…
- HYDROPAC 3313/14 · Cable ops2014-11-07 → 2014-12-01Cable laying operations in progress until 01 mar 15 by cableship segero vicinity of trackline joining…
- USGS-USB000SPN6 · Quakes2014-10-22 → 2014-10-25Earthquake magnitude 5.8 (mww) in 27.416N 128.553E, depth 43 km at 220015Z oct 14
- HYDROPAC 2681/14 · Cable ops2014-09-12 → 2014-10-26Cable repair operations 14 sep thru 25 oct in area bound by 25-40-52N 121-38-25E, 25-41-46N 121-41-43E,…
- HYDROPAC 2657/14 · Cable ops2014-09-10 → 2014-09-27Cable repair operations 15 thru 22 sep, alternate 23 thru 29 sep by M/V kddi ocean link in area bound by…
- HYDROPAC 2618/14 · Cable ops2014-09-06 → 2014-09-16Cable repair operations 08 thru 15 sep by cableship lodbrog vicinity 25-49.3N 121-48.3E
- USGS-USB000RZLC · Quakes2014-08-03 → 2014-08-06143 km wsw of naze, japan
- HYDROPAC 2206/14 · Exercises2014-07-28 → 2014-08-01Hazardous operations
- HYDROPAC 2176/14 · Containers2014-07-25 → 2014-07-28Container adrift in 32-29.9N 123-13.7E on 25 jul
- HYDROPAC 2051/14 · Containers2014-07-12 → 2014-07-15Container adrift vicinity 27-56.8N 122-24.1E at 120112Z jul
- HYDROPAC 1487/14 · Cable ops2014-05-25 → 2014-06-01Cable operations 280400Z may to 102359Z jun by cableship lodbrog vicinity 25-26.4N 121-22.9E
- HYDROPAC 1216/14 · Cable ops2014-04-28 → 2014-07-01Seismic survey in progress until 30 jun by vessel towing six 6000 meter long cables 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.