 Complete the following sentence: In February 1943, Sheffield moved to operate in the Bay of Biscay and, in July and August, she supported the landings at Salerno ì ëì ì ì : Ìgbésẹ Avalanche. Lẹyìn tí ó tún padà sí Àríwá Òkun, ó kópa nínú sísọ ọkọ ogun Scharnhorst rì ní etíkun àríwá Norway, ní òpin oṣù Kejìlá. 