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 3857/17 · Cable ops2017-11-08 → 2017-11-10Cable operations 09 thru 16 nov, alternate 17 thru 24 nov by cableship fu an in area bound by 33-18.1N…
- HYDROPAC 3665/17 · Incidents2017-10-27 → 2017-10-27Distress signal received in vicinity 25-00N 123-00E at 270304Z oct
- HYDROPAC 3459/17 · Cable ops2017-10-10 → 2017-10-17Cable operations 11 thru 17 oct, alternate 18 thru 24 oct by cableship segero in area bound by 25-46-22.9N…
- HYDROPAC 3411/17 · Incidents2017-10-06 → 2017-10-20Distress signal received in 26-00N 123-02E at 060143Z oct
- HYDROPAC 3271/17 · Cable ops2017-09-23 → 2017-09-28Cable operations 24 thru 30 sep, alternate 01 thru 07 oct by cableship segero in area bound by 25-38-35.5N…
- HYDROPAC 3105/17 · Incidents2017-09-11 → 2017-09-29Distress signal received in 26-14.3N 123-28.8E at 111132Z sep
- HYDROPAC 2989/17 · Cable ops2017-09-02 → 2017-09-04Cable operations in progress until 31 dec in vicinity of trackline joining 24-51N 121-50E, 24-54N 121-59E,…
- HYDROPAC 2792/17 · Incidents2017-08-17 → 2017-09-01Distress signal received in 25-44N 123-14E at 170801Z aug
- USGS-US2000A8QF · Quakes2017-08-16 → 2017-08-19158 km wnw of naze, japan
- HYDROPAC 2602/17 · Incidents2017-07-31 → 2017-07-31Distress signal received on 406 mhz from M/V xinenhui 008 in: a. 31-36-39N 121-17-20E
- HYDROPAC 2404/17 · Incidents2017-07-12 → 2017-07-27Distress signal received in vicinity 27-00N 123-00E at 120706Z jul
- HYDROPAC 2307/17 · Incidents2017-07-02 → 2017-07-21Distress signal received in 26-51N 122-48E at 021606Z jul
- HYDROPAC 2247/17 · Incidents2017-06-27 → 2017-07-14Distress signal received on 406 mhz in 28-20-07N 123-56-12E at 270802Z jun
- HYDROPAC 1849/17 · Incidents2017-05-26 → 2017-06-09Distress signal received in 26-10.2N 123-42.3E at 261453Z may
- HYDROPAC 1846/17 · Incidents2017-05-26 → 2017-06-09Distress signals received in: a. 26-07.43N 123-11.87E at 261111Z may
- HYDROPAC 1842/17 · Incidents2017-05-26 → 2017-06-09Distress signal received in 26-09.4N 123-40.5E at 260723Z may
- HYDROPAC 1816/17 · Cable ops2017-05-24 → 2017-06-07Cable operations 29 may thru 04 jun, alternate 05 thru 09 jun by M/V kddi ocean link in area bound by…
- HYDROPAC 1698/17 · Incidents2017-05-14 → 2017-06-02Distress signal received in 26-12.38N 123-30.64E at 141058Z may
- HYDROPAC 1683/17 · Cable ops2017-05-12 → 2017-05-16Cable operations 17 thru 24 may by cableship segero in area bound by 26-10-04.0N 122-18-54.2E, 26-16-30.9N…
- HYDROPAC 1620/17 · Incidents2017-05-07 → 2017-05-26Distress signal received in 26-14.3N 123-36.4E at 071200Z may
Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts.