HMS Scout was a Cruizer-class brig-sloop built by Peter Atkinson & Co. at Hull and launched in 1804. She participated in a number of actions and captured several privateers in the Mediterranean during the Napoleonic Wars. The Navy sold her in 1827. In 1829 she reappeared as the British Southern Whale Fisheries whaler Diana. Diana made three voyages for Daniel Bennett & Son until condemned after an on-board explosion in April 1843 towards the end of her fourth voyage.