( CNN ) -- South Korea 's final report on the March sinking of the warship Cheonan reaffirms that a North Korean torpedo sent the ship to the bottom of the Yellow Sea , killing 46 sailors . The full report , released Monday and based on an investigation conducted by South Korean , U.S. , Swedish , British and Australian officials , offers new details to back up May 's preliminary report on the incident . `` The ROK Navy ship Cheonan was sunk by a North Korean torpedo attack while conducting a normal mission in the vicinity of Baengnyeong Island at 09:22 p.m. on March 26 , 2010 , '' the English-version of the report says in its conclusion , according to a Korea Times report . The report says the torpedo did not strike the ship , but the shock wave generated when it exploded nearby split the Cheonan in two . Why are the two Koreas so hostile ? `` The detonation location was 3 meters to the port from the center of the gas turbine room and at a depth of 6 to 9 meters . The weapon system used was a CHT-02D torpedo with approximately 250 kilograms of explosives manufactured by North Korea . '' South Korea 's Yonhap news agency quotes the report as saying . The shock-wave effect is substantiated by survivors ' accounts , according to the Yonhap report . `` Forty-one survivors said that they smelled oil , but there were no witnesses of flames , fire or a water column , nor were there any injuries from these factors , '' Yonhap quotes the full report as saying . Critics say the final report still leaves questions . For instance , while investigators found traces of explosives on the hull of the Cheonan , no trace of explosives was found on torpedo parts recovered from the scene . Investigators said that could be because the torpedo parts were too small to hold trace explosives , according to a Korea Herald report . The final report also includes communication between the captain of the Cheonan , Cmdr . Choi Won-il , and his boss , squadron commander Capt . Lee Won-bo , according to Yonhap . `` I think we 've been hit by something , '' Choi told Lee . `` What do you think it is ? '' Lee asked . `` I think it 's a torpedo , '' Choi said . North Korea has denied any involvement in the sinking of the Cheonan , calling the results of the preliminary report `` sheer fabrication , '' according to its official Korea Central News Agency . KCNA had not yet posted any reaction to the full report . U.S. forces during the summer conducted anti-submarine exercises with South Korea . Further exercises are planned , U.S. officials say .
The full report retains the conclusion found in the preliminary report . The torpedo did not hit the ship , but its shock wave split the Cheonan in two , it said . Questions remain ; North Korea has denied any involvement .