|The Great Eastern's 10 huge coal bunkers can be seen on this plan. © NMM|
Brunel's steamship was designed for the passenger and mail service linking Britain with India, China, and Australia. Brunel wanted to build a ship that was so big that it would be able to carry enough coal for a voyage to India or Australia without having to stop at coaling stations on the way.
|Longitudinal profile of the Great Eastern. © NMM|
|The Great Eastern, designed by I.K. Brunel. © NMM|
These would give her a speed of 14 knots. The ship had a gross tonnage of 22,000 tons and a depth of hull of 18 m (58 ft).
|Embroidered representation of the Great Eastern, c. 1858. © NMM|
The Great Eastern was nowhere near as big as the next generation of liners. The Titanic, for example, weighed more than 46,000 tons. But at the time of the Great Eastern's launch in 1858 the largest ships were less than 5000 tons.
It was 1899 before a longer ship (the White Star's Oceanic H at 211 metres (705 feet)) and 1907 before a heavier vessel (Cunard's Lusitania at 31,550 tons) than the Great Eastern was launched.
|John Scott Russell. © NMM|
They accepted the suspiciously low figure of £377,000 (over £19 million in today's money), from the Millwall shipbuilder John Scott Russell. They thought they had struck a bargain, but eventually it was to ruin the company.
|Brunel and Scott Russell at the first Launch of the Great Eastern on 3 November 1857. © NMM|
Although Brunel had the idea of building such an enormous ship, it was Scott Russell who decided what shape the ship should be. He used his knowledge of waves to help him do this.
Brunel and Scott Russell had already worked well together on the design of two other vessels.
The Great Eastern was to be built at Scott Russell's yard at Millwall on the Thames.
|The family saloon on board the Great Eastern. © NMM|
|The Grand Saloon. © NMM|
The octagonal, or eight-sided, cases in the centre of the grand saloon, with their mirrored panels, had a practical purpose.
They covered the pipes that went from the boiler rooms below to the funnels.
|The sternpost screw, 1857. © NMM|
Brunel and Scott Russell's new steamship would have a screw propeller as the main propulsion.
The position of the sternpost screw is shown in this photograph, taken during the construction of the Great Eastern at Millwall.
|One of the Great Eastern's enormous paddle wheels under construction in 1857. © NMM|
The screw propeller was supported by 17 m (56 ft) diameter side paddle wheels for use in shallow coastal waters.
This photograph shows one of the paddle wheels being constructed.
|The Great Eastern under sail. © NMM|
Brunel, however, made the Great Eastern so large that it could carry enough coal for a passage to Australia. Nevertheless, the Great Eastern still had six masts (named Monday to Saturday) with sails covering an area of 5435 square metres (6500 square yards). The addition of sails meant that the ship could carry on even if the enormous coal reserves ran out.
|The screw engines. © NMM|
The screw engines were built by James Watt & Co. at Birmingham. The complete unit weighed 500 tons and drove a 36-ton cast iron propeller via a shaft 46 m (150 ft) long and weighing 60 tons.
|The paddle engines. © NMM|
The engines used to drive the 17 m (56 ft) diameter paddle wheels were also on a huge scale.
They were so big that new furnaces and machinery had to be installed in the Millwall yards just to build the ship!