"HMS Stork in July 1943"@en . . . . "Bittern-class sloop"@en . . . "300"^^ . . . "The Bittern class sloop was a three ship class of long-range escort vessels used in the Second World War by the Royal Navy."@en . "The Bittern class sloop was a three ship class of long-range escort vessels used in the Second World War by the Royal Navy."@en . . . . . . . .