The USS Denver (LPD-9), an Austin class amphibious transport dock is about to reach the end of its U.S. service. Commissioned on October 26, 1968, she is currently the oldest active commissioned ship and the third oldest commissioned ship, behind the USS Constitution and USS Pueblo (AGER-2). It will sail from Japan for Pearl Harbor this summer and will be formally decommissioned on September 30, 2014.
However, it may not be the end for this ship. The ship will not immediately be stricken from the Naval Vessel Register and instead will go into mothballs. However, the ship has been offered for sale to Malaysia, so it may very well live on for several more years in service.
The USS Green Bay (LPD-20) will eventually replace the USS Denver in Japan.