The article recalled that the military authorities took the stern of the warship towards a shore before telling the members of a civilian salvage team to leave the place.

They had banned anyone's access to it for two days, it added.

Divers of the U.S. forces were engaged in a diving operation in the nearby waters and several helicopters were seen transporting something nonstop for these two days, the article noted, and continued:

South Korean army's divers had conducted a diving operation in those waters before the stern was taken to the shore. They testified to the fact that they saw a big structure on the seabed.

The structure was believed to be a submarine capable of staffing about 38 crewmen as its inside had a mass of pipes.

All these facts provide two reasons for the warship's sinking.

First, the submarine and the warship "Cheonan" accidentally collided with each other that resulted in breaking the warship into two pieces and sending the submarine into the bottom of the sea.

Second, two U.S. submarines sank because of mistaken cross-firing or an accident inside them. In that case a U.S. nuclear submarine might ram into "Cheonan" to break it into two pieces when it was rushing on a rescue mission.

Pretending to salvage the warship, the U.S. divers might clear the dead bodies, dangerous missiles, etc. out of the U.S. sub.

The authorities claimed it was a trading vessel which sank 60 years ago, but the results of an analysis concluded that its shape was fully identical to a submarine, not a trading vessel.

The warship appears more likely to be sunk by a U.S. submarine with the passage of time.