41.   It was interrupted first by a broken cable, then by the need to replace the saw and add protection against rocks on the sea bottom.

42.   Many experts predict the cause will remain a mystery because the answers can be found only in the shattered front section that is being left on the sea bottom.

43.   Officials agree that the first explosion, which sent the Kursk plummeting to the sea bottom, was caused by a practice torpedo.

44.   Other divers went in search of her and found her body lying at the sea bottom, police said.

45.   Salvage officials were also trying to repair a mooring cable from a tug holding the ship steady which snapped Thursday after catching on the sea bottom.

46.   Submarine detection in shallow waters is difficult because sound waves from a craft become distorted afer hitting the shallow sea bottom, military analysts say.

47.   The front compartment, which may contain unexploded torpedoes, is to be left at the sea bottom when the Kursk is raised in mid-September.

48.   The Navy had planned to send an unmanned submersible Thursday to the sea bottom where the ship went down, but high seas forced a postponement.

49.   Then it is entrapped in nooks and crannies of the sea bottom and it is gradually absorbed by debris feeders and by algae.

50.   It is thought to have remained on the sea bottom since the lighthouse, known as Pharos, collapsed six centuries ago, an AFP correspondent said.