N'afọ 1941, o sonyere na Operation Grog, na shelling nke Genoa, na arụmọrụ megide Vichy convoys na-akwado ikuku reinforcements ka Malta. Na May, Sheffield wee akụkụ na sinking nke German battleship Bismarck, na-agbapụ a enyi ọkụ torpedo agha site ụgbọelu ụgbọelu Ark Royal si Fairey Swordfish; Egburu torpedo iri na otu na naanị ntụpọ Duplex explosives na ezi ụgbọ mmiri njikwa zọpụta ya site na ọdachi. (Na akụkọ nke agha ahụ, Admiral Sir John Tovey, na-achịkwa Home Fleet, a gwara ya na ọ dịghị ihe ọ bụla e meriri na Bismarck.
Genoa