The most famous of the Dumbarton-built ships was the Cutty Sark, completed in 1869, and was one of the fastest clippers of all time. In the twentieth century, Denny's invented a type of hovercraft that was tested on Gareloch in 1961.
Clydebank was founded in 1871 when the Thomson brothers moved their shipyard down to opposite the mouth of the River Cart and the name, Clydebank, came with them. In 1882, Singer started to build their sewing machine factory and this produced machines for the whole of Europe. By 1900, there were 18,000 inhabitants of the new town.
In 1899, Thomsons was taken over by John Brown & Co, who went on to produce ships such as the Lusitania (1906), HMS Hood (1918), the Queen Mary (1934), the Queen Elizabeth and the QE2. From 1905, William Beardmore had a shipyard in Dalmuir and launched ships such as the Agamemnon. He also experimented with aeroplanes and airships.