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 1318/06 · Cable ops2006-07-14 → 2006-11-09Seismic survey in progress until 08 nov by working vessel towing 4500 meter long cable in area bound by…
- HYDROPAC 1314/06 · Incidents2006-07-13 → 2006-08-30Floating dock number seven in distress and crew abandoning ship in 27-55N 121-54E
- HYDROPAC 1125/06 · Wrecks2006-06-19 → 2007-03-22Wreck in position 33-14.5N 125-45.8E
- USGS-USP000EK60 · Quakes2006-06-11 → 2006-06-1415 km s of tsukawaki, japan
- HYDROPAC 1010/06 · Incidents2006-06-01 → 2006-07-19Man overboard from M/V noble family vicinity 28-10N 123-41E at 010100Z jun
- HYDROPAC 953/06 · Surveys2006-05-25 → 2006-06-05Underwater operations daily 27 may thru 07 jun by M/V kdd ocean link in area bound by 25-47.9N 122-05.8E,…
- HYDROPAC 704/06 · Other2006-04-18 → 2006-10-01Pipelaying operations in progress until 30 sep vicinity of trackline between 29-07-29N 124-55-36E and…
- HYDROPAC 663/06 · Cable ops2006-04-13 → 2006-06-07Cable laying operations in progress until 30 sep vicinity of trackline joining 27-07-29N 124-55-36E and…
- HYDROPAC 524/06 · Other2006-03-27 → 2008-03-30Large structure established in 29-07.5N 124-56.6E
- HYDROPAC 300/06 · Incidents2006-02-24 → 2006-04-12Distress signal received on 406 mhz in 31-54-39N 120-15-07E at 240527Z feb
- USGS-USP000E5EH · Quakes2005-12-03 → 2005-12-06101 km s of yudomari, japan
- HYDROPAC 1967/05 · Exercises2005-11-23 → 2005-12-02Hazardous operations within 50 miles 0F 27-33N 126-42E: a. 2359Z to 0200Z commencing daily 28, 30 nov and 01…
- USGS-USP000E4NM · Quakes2005-11-21 → 2005-11-2441 km sw of makurazaki, japan
- USGS-USP000E1WR · Quakes2005-10-15 → 2005-10-1899 km nne of yonakuni, japan
- HYDROPAC 1531/05 · Surveys2005-09-20 → 2005-10-01Survey operations in progress until 30 sep in area bound by 29-27N 123-06E, 28-42N 123-37E, 27-48N 123-10E,…
- HYDROPAC 1477/05 · Containers2005-09-11 → 2005-09-18Numerous containers adrift in 31-04.8N 123-41.3E
- HYDROPAC 1475/05 · Containers2005-09-11 → 2005-09-18Numerous containers adrift vicinity 26-15.6N 122-43.6E
- HYDROPAC 1280/05 · Surveys2005-08-08 → 2005-10-31Survey operations in progress until 30 oct by working vessel in area bound by 29-19-35.6N 125-00-19.0E,…
- HYDROPAC 1266/05 · Cable ops2005-08-05 → 2005-08-16Seismic survey in progress until 15 aug by M/V polar duke towing 4000 meter long cable in area bound by…
- HYDROPAC 1101/05 · Cable ops2005-07-11 → 2005-08-28Underwater operations in progress until further notice by cableship cable retriever until 27 aug along…
Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts.