SS Great Eastern
She also had six masts (said to be named after the days of a week – Monday being the fore mast and Saturday the spanker mast), providing space for of sails (7 gaff and max. 9 (usually 4) square sails), rigged similar to a topsail schooner with a main gaff sail (fore-and-aft sail) on each mast, one "jib" on the fore mast and three square sails on masts no. 2 and no. 3 (Tuesday & Wednesday); for a time mast no. 4 was also fitted with three yards. In later years, some of the yards were removed. According to some sources she would have carried . This amount of canvas is obviously too much for seven fore-and-aft sails and max. 9 square sails. This (larger) figure of sail area lies only a few square metres below that the famous Flying P-Liner "Preußen" carried – with her five full-rigged masts of 30 square sails and a lot of stay sails. Setting sails turned out to be unusable at the same time as the paddles and screw were under steam, because the hot exhaust from the five (later four) funnels would set them on fire. Her maximum speed was 24 km/h (13 knots).
Ernst August (ship)
She had a 580 tonne displacement and was 49.21 m long along the waterline and 55.47 m long in total. At her widest point she was 9.72 m and across her wheel arches she was 17.1 m wide. Her maximum draught was 3.96 m and her propulsion were two paddle wheels driven by two horizontal single-cylinder reciprocating steam engines manufactured by Miller Ravenhill, a London firm. The engine produced about 950 PSi and gave her a speed of 9 knots. Each wheel had twelve blades and a diameter of 5.79 m. The engines supplied three boilers generating around 1 atm steam pressure, housed with the engines themselves in a 16.15 m long engine room. She carried 200 tonnes of coal to power the engines, but was also rigged as a two-masted schooner. Her armament was six 68-pounder guns and her crew was five officers and 145 NCOs and men. "Großherzog von Oldenburg" and "Frankfurt" were built to the same design.