HMS Penguin was an sloop. Launched in 1876, Penguin was operated by the Royal Navy from 1877 to 1881, then from 1886 to 1889. After being converted to a survey vessel, Penguin was recommissioned in 1890, and operated until 1908, when she was demasted and transferred to the Australian Commonwealth Naval Forces for use as a depot and training ship in Sydney Harbour. After this force became the Royal Australian Navy, the sloop was commissioned as HMAS Penguin in 1913. Penguin remained in naval service until 1924, when she was sold off and converted into a floating crane. The vessel survived until 1960, when she was broken up and burnt. Design and construction Penguin was an Osprey-class sloop-of-war, with a composite hull design. The ship had a displacement of 1,130 tons, was long, had a beam of , and a draught of . An R & W Hawthorn two-cylinder horizontal returning-rod steam engine fed by three cylindrical boilers provided to the single propeller screw. This gave Penguin a top speed of , which failed to meet the required contract speed. After the first commission the engine was replaced by a Devonport Dockyard two-cylinder horizontal compound-expansion steam engine, developing . She had a maximum range of at . In addition to the steam-driven propeller, the vessel was also barque rigged. The standard ship's company was between 140 and 150. Armament consisted of two 7-inch (90 cwt) muzzle-loading rifled guns, four 64-pounder guns, four machine guns, and one light gun. Penguin was built by Robert Napier and Sons, of Govan, Scotland. The vessel was laid down on 14 July 1876 as yard number 342. She was launched on 25 March 1876, and commissioned into the Royal Navy on 23 August 1877. Construction costs included £39,611 for the hull, and £12,500 for her steam machinery. Operational history British service After entering service, Penguin was assigned to the Pacific Station until 1881, when she was paid off. Recommissioned in 1886 for the East Indies Station, she formed part of Rear-Admiral Fremantle's Anti-Slave Trade Squadron and participated in the blockade of Zanzibar in 1888 before returning to England and being paid off in 1889. She underwent a refit as a survey vessel and commenced service on the Australia Station in 1890 and undertook survey work around the Western Pacific islands, New Zealand and the Great Barrier Reef. Lieutenant Boyle Somerville, one of the surveyors at