Cheonan Attack Incident
The Cheonan(PCC772) sank due to a surprise torpedo attack from a North Korean submarine while performing a patrol mission 2.5 km southwest of Baengnyeongdo Island on Mar. 26, 2010, at 21:22, Out of the 104 crew members aboard, 46 were died, and 58 were rescued.
| Date & Time | Situation & Actions | Remarks |
| Mar. 26, 21:22 | The Cheonan(PCC772) sank due to a torpedo attack from a North Korean submarine 2.5 km southwest of Baengnyeongdo Island while performing a security patrol. | 46 crew members were lost. |
| Mar. 27, 13:37 | The bow of the Cheonan(PCC772) completely sank. | |
| Mar. 31 | A joint military-civilian investigation team was formed (82 members). | The investigation lasted from March 31 to June 30. |
| Apr. 2, 15:00 | Fishing boats, including Geumyang 98, searched for missing persons. Search was interrupted and halted due to protests from Baengnyeongdo Island fishermen. At 21:13, the Geumyang 98 was reported to have encountered distress. | |
| Apr. 3, 21:45 | Press conference by the families of missing persons (request to suspend search operations) | |
| Apr. 4, 00:00 | The search operation for the missing persons transitioned to raising the hull of the ship | Request of the families' committee accepted |
| Apr. 4, 10:00 | Private companies arrive on-site for hull raising operation (Bow: Korea Ocean Development Corporation, Stern: 88 Submarine Development) | |
| Apr. 7, 10:30 | First joint investigation team results announced and joint press conference with surviving crew members | |
| Apr. 12 | Restructuring of the joint investigation team(49 local members, 24 foreign members) | |
| Apr. 15, 08:44 | Stern section of the ship raised, completed at 13:12 | |
| Apr. 16, 22:45 | Barge carrying the raised stern departs the site (arrives in Pyeongtaek at 19:20 on the 17th) | |
| Apr. 19, 07:45 | President issues a special message to commemorate the Cheonan(PCC772) heroes | Broadcast via radio and the internet |
| Apr. 22, 21:21 | Raising of the funnel section completed | |
| Apr. 24, 12:15 | Bow section raised | |
| Apr. 25 | The naval memorial service begins, with a national mourning period declared 340 memorial services set up nationwide | |
| Apr. 29, 10:00 | Joint funeral ceremony for the 46 heroes of the Cheonan(PCC772)(presided over by the President) | At the 2nd Fleet Headquarters |
| May 10, 17:35 | Towing vessel deployed for debris search and recovery operation | Daepyeong 11, 12 ships |
| May 15, 09:25 | Recovery of crucial evidence : torpedo propulsion device | Daepyeong 11, 12 ships |
| May 20, 10:00 | Joint investigation team announces findings | Operations concluded at 12:00 |
| Mar. 26, 2011 | Publication of the "Cheonan(PCC772) Attack Incident Joint Investigation Report" |
Mar. 26,
21:22
The Cheonan(PCC772) sank due to a torpedo attack from a North Korean submarine 2.5 km southwest of Baengnyeongdo Island while performing a security patrol.
46 crew members were lost.Mar. 27,
13:37
The bow of the Cheonan(PCC772) completely sank.
Mar. 31
A joint military-civilian investigation team was formed (82 members).
The investigation lasted from March 31 to June 30.Apr. 2,
15:00
Fishing boats, including Geumyang 98, searched for missing persons. Search was interrupted and halted due to protests from Baengnyeongdo Island fishermen. At 21:13, the Geumyang 98 was reported to have encountered distress.
Apr. 3,
21:45
Press conference by the families of missing persons (request to suspend search operations)
Apr. 4,
00:00
The search operation for the missing persons transitioned to raising the hull of the ship
Request of the families' committee acceptedApr. 4,
10:00
Private companies arrive on-site for hull raising operation (Bow: Korea Ocean Development Corporation, Stern: 88 Submarine Development)
Apr. 7,
10:30
First joint investigation team results announced and joint press conference with surviving crew members
Apr. 12
Restructuring of the joint investigation team(49 local members, 24 foreign members)
Apr. 15,
08:44
Stern section of the ship raised, completed at 13:12
Apr. 16,
22:45
Barge carrying the raised stern departs the site (arrives in Pyeongtaek at 19:20 on the 17th)
Apr. 19,
07:45
President issues a special message to commemorate the Cheonan(PCC772) heroes
Broadcast via radio and the internetApr. 22,
21:21
Raising of the funnel section completed
Apr. 24,
12:15
Bow section raised
Apr. 25
The naval memorial service begins, with a national mourning period declared 340 memorial services set up nationwide
Apr. 29,
10:00
Joint funeral ceremony for the 46 heroes of the Cheonan(PCC772)(presided over by the President)
At the 2nd Fleet HeadquartersMay 10,
17:35
Towing vessel deployed for debris search and recovery operation
Daepyeong 11, 12 shipsMay 15,
09:25
Recovery of crucial evidence : torpedo propulsion device
Daepyeong 11, 12 shipsMay 20,
10:00
Joint investigation team announces findings
Operations concluded at 12:00Mar. 26.
2011
Publication of the "Cheonan(PCC772) Attack Incident Joint Investigation Report"
