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 4034/18 · Incidents2018-11-08 → 2018-11-23Japan DNC 23
- HYDROPAC 4024/18 · Incidents2018-11-07 → 2018-11-23Distress signal received in 26-07N 123-36E at 071812Z nov
- HYDROPAC 3787/18 · Incidents2018-10-18 → 2018-11-02Distress signal received in 26-06N 123-17E at 180721Z oct
- HYDROPAC 3297/18 · Incidents2018-09-09 → 2018-09-09Distress signal received on 406 mhz at 090726Z sep in: a. 28-38-56N 134-57-50E
- HYDROPAC 3271/18 · Nav aids2018-09-07 → 2018-09-14Socotra rock light 32-07.4N 125-10.9E and RACON inoperative
- HYDROPAC 3248/18 · Incidents2018-09-05 → 2018-09-05Distress signal received from vessel ocean topaz in 31-40N 126-59E at 042347Z sep
- HYDROPAC 3157/18 · Incidents2018-08-28 → 2018-09-14Distress signal received on 406 mhz in 30-11-47N 127-41-46E at 282019Z aug
- HYDROPAC 2987/18 · Volcanic2018-08-15 → 2018-08-29Volcanic activity reported in area within two mile of 30-26.7N 130-12.9E at 150130Z aug
- HYDROPAC 2772/18 · Incidents2018-07-31 → 2018-08-17Distress signal received in vicinity 25-51N 123-11E at 310048Z jul
- HYDROPAC 2763/18 · Incidents2018-07-30 → 2018-08-17Distress signal received in vicinity 25-44.30N 123-12.42E at 300629Z jul
- HYDROPAC 2759/18 · Incidents2018-07-29 → 2018-08-17Distress signal received in 26-08N 123-40E at 291209Z jul
- HYDROPAC 2613/18 · Incidents2018-07-17 → 2018-08-03Distress signal received in 26-02.30N 123-29.89E at 170803Z jul
- HYDROPAC 2595/18 · Incidents2018-07-15 → 2018-08-03Distress signal received in 26-36N 122-51E at 151309Z jul
- HYDROPAC 2547/18 · Incidents2018-07-12 → 2018-07-27Distress signals received on 406 mhz at 120104Z jul in: a. 28-09-25N 135-05-13E
- HYDROPAC 2361/18 · Incidents2018-06-26 → 2018-07-13Distress signal received 25-44N 123-27E at 261157Z jun
- HYDROPAC 2047/18 · Cable ops2018-05-30 → 2018-06-07Cable operations by M/V kddi ocean link 31 may thru 03 jun, alternate 04 thru 09 jun in area bound by…
- HYDROPAC 1996/18 · Cable ops2018-05-26 → 2018-05-31Cable operations by M/V kddi ocean link 27 thru 30 may in area bound by 26-01.1N 122-06.7E, 25-51.7N…
- HYDROPAC 1995/18 · Incidents2018-05-26 → 2018-05-26Distress signal received from vessel feng kuo 667 in 26-34N 122-58E at 261027Z may
- HYDROPAC 1961/18 · Incidents2018-05-23 → 2018-06-08Distress signal received in 26-00.53N 123-15.67E at 231908Z may
- HYDROPAC 1879/18 · Incidents2018-05-16 → 2018-06-01Distress signal received in 26-08.19N 123-25.24E at 161506Z 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.