Iowa was launched on August 27 , 1942 and commissioned on March 22 the following year . In order to avoid encountering the German battleship Tirpitz, the trial voyage was carried out in the Chesapeake Bay. In 1944, she moved to the Pacific Ocean and joined the Pacific Fleet, during which she participated in the Battle of Marshall, the Battle of the Mariana Islands, and the Battle of Wright Gulf; she participated in the Korean War in the 1950s, and was used as a training ship after the war, and soon entered the reserve service ; On April 17 , 1989 , a turret explosion occurred on the Iowa, killing 47 sailors ; in 1990 , the Iowa received a decommissioning notice; on March 17 , 2006 , it was removed from the list of active warships and transferred to Among the old warships of the Defense Reserve Fleet in Saas Bay, it will become a floating museum in the future.