INDIANAPOLIS (AP) _ The USS Vincennes, the Navy ship that accidentally shot down an Iranian jetliner over the Persian Gulf, was commissioned three years ago this week.

The 9,600-ton cruiser is the fourth vessel to bear the name of the southwestern Indiana city since 1826.

The Vincennes, the third in a new class of guided missile Aegis-type cruisers, was christened in Pascagoula, Miss., on April 14, 1984, by Marilyn Tucker Quayle, the wife of U.S. Sen. Dan Quayle, R-Ind.

It was commissioned at Pascagoula on July 6, 1985, and turned over to the Navy by the builder, Litton Industries, in a ceremony attended by members of Congress and Navy officials.

At the time, Quayle said the ship would ''carry on the tradition of service established by the three previous ships bearing the name.''

The first USS Vincennes was commissioned in 1826 and assigned to service in the Pacific. It was decommissioned in 1867. The second ship with that name was a heavy cruiser commissioned in 1937 and sunk by Japanese cruisers in 1942.

A light cruiser named for Vincennes was commissioned in 1944 and received six battle stars for service in World War II before being decommissioned in 1946.