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
- USGS-US20004WK0 · Quakes2016-02-02 → 2016-02-05130 km nne of yonakuni, japan
- HYDROPAC 254/16 · Cable ops2016-01-29 → 2016-03-08Cable laying operations 01 feb until further notice by cableship rene descartes in vicinity of trackline…
- HYDROPAC 4147/15 · Incidents2015-12-21 → 2015-12-23Distress signal received on 406 mhz in 31-36-02N 121-34-14E at 210416Z dec
- HYDROPAC 3976/15 · Cable ops2015-12-04 → 2015-12-10Cable repair operations 05 dec until further notice by cableship lodbrog vicinity 25-29.7N 121-23.4E
- HYDROPAC 3967/15 · Cable ops2015-12-03 → 2015-12-15Cable repair operations 08 thru 15 dec, alternate 16 thru 20 dec by M/V kddi ocean link in area bound by…
- USGS-US10003YDZ · Quakes2015-11-14 → 2015-11-17138 km wsw of kushikino, japan
- USGS-US10003Y71 · Quakes2015-11-13 → 2015-11-16140 km wsw of makurazaki, japan
- HYDROPAC 3448/15 · Incidents2015-10-20 → 2015-11-01Distress signal received on 406 mhz in 31-10-22N 122-22-51E at 200756Z oct
- HYDROPAC 3358/15 · Nav aids2015-10-12 → 2015-10-15NAVTEX station naha 26-05.5N 127-40.1E at reduced power 2300Z to 0700Z commencing daily 12 thru 15 oct,…
- HYDROPAC 2285/15 · Incidents2015-07-11 → 2015-07-1825000 ton M/V kamala, 23 persons on board, on fire in 30-39.8N 124-35.8E at 110230Z jul
- HYDROPAC 2167/15 · Nav aids2015-06-29 → 2015-07-01NAVTEX station naha 26-05.5N 127-40.1E unreliable 2300Z to 0700Z commencing daily 29 and 30 jun
- HYDROPAC 1755/15 · Volcanic2015-05-29 → 2016-06-14Volcanic activity within two miles of 30-26.7N 130-12.9E
- HYDROPAC 1753/15 · Volcanic2015-05-29 → 2015-05-29Volcanic activity reported in 30-27N 130-13E at 290059Z may
- HYDROPAC 1575/15 · Cable ops2015-05-13 → 2015-07-01Cable repair operations in progress until 30 jun in area bound by 25-47-21.0N 121-39-04.0E, 25-48-16.5N…
- HYDROPAC 1465/15 · Incidents2015-05-01 → 2015-05-09Distress signal received on 406 mhz in 32-32-09N 128-51-54E at 010434Z may
- HYDROPAC 1147/15 · Cable ops2015-04-02 → 2015-05-22Cable operations 07 thru 30 apr, alternate 01 thru 21 may by M/V miraero vicinity of trackline joining…
- HYDROPAC 1112/15 · Cable ops2015-04-01 → 2015-09-01Cable laying operations by cableship segero daily 05 apr thru 07 aug, alternate 08 thru 31 aug, along…
- HYDROPAC 891/15 · Incidents2015-03-13 → 2015-04-02Distress signal received on 406 mhz in 30-46-56N 124-44-33E at 132049Z mar
- HYDROPAC 365/15 · Cable ops2015-02-01 → 2015-02-08Underwater operations in progress until 07 feb by cableship lodbrog vicinity 25-53.0N 121-49.2E
- HYDROPAC 279/15 · Cable ops2015-01-25 → 2015-01-28Cable repair operations in progress until 28 feb by cableship lodbrog in area bound by 25-47-21.0N…
Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts.