SS Great Britain

She was floated out at Bristol in 1843 and was the first large ocean-going ship to combine an iron hull with a screw propeller.

In 1845 she became the first iron steamer to cross the Atlantic, in 14 days, and from 1852 she carried emigrants to Australia for almost 30 years.

A glass plate across the dry dock at the waterline lets visitors walk beneath the hull, in the Bristol dock she returned to in 1970 after decades in the Falklands.