Last, largest Seawolf sub in service

GROTON, Conn. -- The USS Jimmy Carter entered the Navy's fleet Saturday as the most heavily armed submarine ever built, and as the last of the Seawolf class of attack subs that the Pentagon ordered during the Cold War's final years.

The $3.2 billion Jimmy Carter was commissioned Saturday, the first submarine named after a living ex-president. Carter, himself a submariner during his time in the Navy, was on hand for the ceremony signaling the end of an era in submarining.

"The most deeply appreciated and emotional honor I've ever had is to have this great ship bear my name," Carter said in remarks prepared for the ceremony at the Naval Submarine Base New London.

Carter was joined by his wife, Rosalynn, former Vice President Walter Mondale and his wife, Joan, and Stansfield Turner, CIA director in the Carter administration.

The 2,500 people on hand Saturday cheered as Carter, a graduate of the U.S. Naval Academy and the only president to serve on a submarine, handed the boat's long glass to the navigator, Lt. Stephen Karpi.

The gesture symbolized the passing of the nation's maritime tradition to a new vessel. The long glass was used years ago to keep watch on a ship's deck.

Carter said he expects the crew to use the submarine's "extraordinary capabilities -- many top secret -- to preserve peace, to protect our country and to keep high the banner of human rights around the world."

The 453-foot, 12,000-ton submarine has a 50-torpedo payload and eight torpedo tubes. And, according to intelligence experts, it can tap undersea cables and eavesdrop on the communications passing through them.

It can reach speeds of more than 25 knots and carry Tomahawk cruise missiles and anti-submarine torpedoes, and it is engineered to be quieter than the other two Seawolves.