The Black Swan class and Modified Black Swan class were two classes of sloop of the Royal HMS Black Swan IWM FL jpg. HMS Black Swan in. This Pin was discovered by Pål Kristensen. Discover (and save!) your own Pins on Pinterest. | See more about High angle, The black swan and The black. HMS Black Prince was a Duke of Edinburgh-class armoured cruiser built for the Royal Navy in the mids. She was stationed in the Mediterranean when the. HMS Black Swan (Pennant Numbers L57, U57, later F57), named after the Black Swan, was the name. Black Swan-class sloop. From Wikipedia, the free encyclopedia HMS Black Swan IWM FL jpg · HMS Black Swan in April. HMS Black Swan, named after the black swan, was the name ship of the Black Swan-class sloops of the Royal Navy. This class was admired for its sea-going.