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).
SS Great Eastern
In the spring of 1854 work could at last begin. The first problem to arise was where the ship was to be built. Scott Russell's contract stipulated that it was to be built in a dock, but Russell quoted a price of £8–10,000 to build the necessary dock and so this part of the scheme was abandoned, partly due to the cost and also to the difficulty of finding a suitable site for the dock. The idea of a normal stern first launch was also rejected because of the great length of the vessel, also because to provide the right launch angle the bow of the ship would have to be raised in the air. Eventually it was decided to build the ship sideways to the river and use a mechanical slip designed by Brunel for the launch. Later the mechanical design was dropped on the grounds of cost, although the sideways plan remained.