11.   It was not clear whether the Russian submarine was equipped with such devices.

12.   Its submarines are noisy and vulnerable and are equipped with poorly functioning torpedoes.

13.   Li was interrogated over night and reportedly said that the submarine had been gathering information off the coast when it developed engine trouble and ran aground.

14.   New submarines are a good example.

15.   North Korea repeated its previous assertion that the submarine was on an innocent training mission when engine trouble sent it drifting into the South Korean coast.

16.   Russian submarines are equipped with suits designed to protect sailors during such underwater escapes.

17.   Someone mentions there were submarines during the Civil War.

18.   Strengthening the lever was the submarine being supplied, the third of three Kilo-class subs that Russia sold to Iran.

19.   The brightly painted submarines are small, holding only one or two people who must wear scuba gear since the subs were not water-tight.

20.   The diesel submarine was about as inhospitable a place to work as one could imagine.