 Complete the following sentence: The Bellona class as well as four rebuilt Dido ships were mainly intended as picket ships for amphibious warfare operations, in support of aircraft carriers of the Royal Navy and United States Navy in the Pacific. was the only ship of the sub-class to be sunk, struck by a German Fritz X while supporting the : Àwọn ibi tí wọn ń gúnlẹ sí ní Anzio. 