On January 21, 1945, during the Pacific War, a maritime mass burial was performed on the hangar deck of the aircraft carrier USS Hancock for more than a dozen victims of an unfortunate accident who died. The crew of the USS Hancock offered a moment of silence.

 　On January 21, 1945, during the Pacific War, a marine mass burial ceremony was conducted on the hangar deck of the aircraft carrier USS Hancock for more than a dozen victims of an unfortunate accident who died. The crew of the USS Hancock observed a moment of silence, and on the afternoon of January 23, a marine mass burial ceremony was held on the deck deck in the Pacific Ocean for seven officers and 43 enlisted men.

　In the Pacific War, on January 21, 1945, an aircraft landed on board the USS Hancock and just before arming a bomb in the hangar of an Avenger torpedo plane, it was mounted and the bomb fell and exploded. Signaling the pilot to open the bomb bay to reload, the unused bomb dropped into the bomb bay on the deck and exploded violently. Within seconds of the explosion, the flight deck was littered with casualties. Firefighters rushed to the scene and extinguished the burning wreckage with hose lines. The explosion sent fragments and debris from the aircraft flying in all directions. Personnel wearing protective gear provided first aid to the casualty, whose body was ripped open by flying debris. After the crash, the quick-reacting crews surrounded the burning and extremely hot plane, which sank after foaming over the wreckage.

  When the aircraft reached a point next to the carrier's bridge, a violent explosion occurred. The death toll of American soldiers reached 62 dead, 46 seriously injured, 25 seriously wounded, and 20 slightly wounded. A 3m x 4.8m hole was opened in the flight deck. The deck area near the explosion was demolished and the signal bridge on the inside side of the aircraft was badly damaged. Three aircraft were destroyed. Numerous shrapnel holes throughout the bridge structure. Fires broke out on the flight deck, gallery deck, and hangar deck.

　　The flight deck of the USS Hancock was littered with wreckage, and debris from the plane hung from the radio antenna immediately after a bomb weighing approximately 227 kg exploded. The accident was not, in effect, a Japanese attack, and there was no warning prior to the Japanese attack. The casualties were quickly repatriated and given first aid treatment. After the fire was extinguished, the flight deck was quickly repaired and normal operations resumed.