 "Iwami" was assigned to the 1st Fleet on 26 November 1907 although she participated in the 1908 naval maneuvers as part of the 2nd Fleet before rejoining the 1st Fleet the following year.On 1 September 1912, the ship was reclassified as a second-class coastal defense ship.Shortly after the start of World War I in 1914, "Iwami" was assigned to the 2nd Division of the 2nd Fleet, formed from captured Russian ships.