The SS South Steyne is a former Manly ferry on Sydney Harbour. She was the world's largest steam-powered passenger ferry and operated on the service from 1938 to 1974. Restored in the 1980s, she served as a restaurant ship in Newcastle in the 1990s, and in 2000 was moved back to Sydney and open to the public at Darling Harbour. Since April 2016 she has been stored at Berrys Bay. She was added to the New South Wales State Heritage Register on 2 April 1999. The South Steyne was designed by Walter Leslie Dendy and John Ashcroft and built from 1937 to 1938 by Henry Robb Ltd. of Scotland. Description South Steyne is a double-ended, double-screw steamship powered by a four cylinder Triple expansion steam engine. The ship's boilers were fitted to burn either coal or oil however she has only used oil. She could achieve a speed in excess of 17 knots, almost as fast as the twin Manly ferries, Dee Why and Curl Curl, in service since 1928. With a length of , beam of , and gross tonnage of , she was the largest ferry to operate on Sydney Harbour and was designed and built to ocean-going ship standards. As a passenger ferry, she had a capacity of 1,781 passengers. She has a riveted steel hull, steel superstructure to sun deck level, steel bulwarks, teak decks and wheelhouses, eight watertight bulk-heads, bar keel, double bottom under engine only. The steel superstructure rises to sun deck level, with teak decks and wheelhouses. She has two funnels including a dummy containing a water tank. Construction and delivery The Port Jackson and Manly Steamship Co. Ltd. was the best known of the Sydney ferry operators and was renowned for the large and comfortable steamers that it ran to the seaside suburb and resort of Manly. Patronage was growing steadily in the 1930s and to increase fleet capacity and vessel speed the Port Jackson Co. ordered a new ferry boat. In December 1936 the General Manager of the Port Jackson Co., Walter Leslie Dendy went to Britain to study sea transportation, propulsion techniques and to order a new ferry. By March 1937, seven shipbuilders had submitted tenders. The contract was awarded to the Scottish shipbuilder Henry Robb Ltd in Leith, Scotland for a steam reciprocating ship. The engine was built by Harland & Wolff, Belfast. The keel of the vessel was