SS Great Britain was the first ocean-going ship to have an iron hull and a screw propeller and, when launched in 1843, was the largest vessel afloat. She originally carried 120 first-class passengers (26 of whom were in single cabins), 132 second-class passengers and 130 officers and crew but, when an extra deck was added, it increased the number of passengers to 730.
See <a href="http://en.wikipedia.org/wiki/SS_Great_Britain">en.wikipedia.org/wiki/SS_Great_Britain</a>
This photo was published in the Schmap Bristol Travel Guide at <a href="http://www.schmap.com/guides/bristol">www.schmap.com/guides/bristol</a>. See <a href="http://www.schmap.com/photos/p=12915821N00/c=SC1013203">www.schmap.com/photos/p=12915821N00/c=SC1013203</a>. And also in the 3rd edition at <a href="http://www.schmap.com/bristol/activities_hotwells/p=97792/i=97792_6.jpg">www.schmap.com/bristol/activities_hotwells/p=97792/i=9779...</a> and the iPhone edition at <a href="http://www.schmap.com/?m=iphone#uid=bristol&sid=all_sights&p=97792&i=97792_6">www.schmap.com/?m=iphone#uid=bristol&sid=all_sights&a...</a>.