The honour of being the first to do this was gained by the Great Western Steamship Company. The _Great Western_, which has been mentioned in Chapter V, had been so successful that her owners felt justified not only in ordering another vessel but in determining that their new steamer should be the largest afloat and illustrate the latest theories of construction. There were already rumours of competition in the North Atlantic trade, and the Great Western directors did not intend to be forestalled. They decided to build an iron ship and it was accordingly announced that the _Great Western_ was to be followed by the _Great Britain_, of iron. This project was roundly condemned by the public. The fact that iron steamers were already in existence on Irish waters did not count for much. These might be good enough for Irish lakes and rivers but would be unfit for the Atlantic Ocean. The _Garry Owen_ was already forgotten. The Great Western Company, however, persisted. The _Great Britain_ was designed by the younger Brunel and launched in 1843. Her length of keel was 289 feet, and length from figure-head to taffrail 320 feet. Her beam was 51 feet. The total depth from the under side of the upper deck to the keel was 31 feet 4 inches. Her tonnage was 3500 tons and her displacement at 16 feet was 2000 tons. Her cargo capacity was 1200 tons measurement, and her coal bunkers held 1000 tons. Since no shipbuilder had the necessary data for the construction of such a vessel, and shipbuilders as a whole were by no means favourably disposed towards iron ships, possibly because they had not the plant necessary for their construction, and as there was also a very widespread belief that a vessel of the size and dimensions of the _Great Britain_ could not be built of iron, the directors were unable to find a contractor who would undertake her construction. They were therefore obliged to instal the plant for building the ship and the engines also. She was built under the supervision of Paterson of Bristol, who was responsible for the _Great Western_. It was at first intended that the _Great Britain_ should be a paddle-steamer and her lines followed in several respects those of the best paddle-steamers of the day; though the _Great Britain_ herself contained so many novel features and was of so experimental a character that it could hardly be said that she followed anything.