21.   Previously, seabed maps were generally made with the aid of surface ships that bounced sound waves off the bottom to get a glimpse of the wilderness below.

22.   Russian surface ships soon afterward detected noises from the bottom.

23.   Some believe it was the most critical engagement between surface ships in World War II.

24.   The Americans collected telltale recordings from submarines, a surface ship and even from shore.

25.   The nuclear-powered Roosevelt entered the Adriatic Sea Monday, along with three other surface ships and a submarine armed with Tomahawk cruise missiles.

26.   The Navy is also pursuing several other programs to help it provide fire support from surface ships.

27.   The second attack came from surface ships and a submarine in the Persian Gulf.

28.   The review does recommend removal of nuclear arms from all U.S. surface ships and a modest cut in bombers.

29.   The Russians have relied on less-advanced gear, including diving bells that dangle from a surface ship and are hard to guide.

30.   The ships and aircraft are also equipped to defend the force from enemy aircraft, submarine and surface ship attack.