Statement of Significance
The American steamer Monumental City was one of the first screw steamers to cross the Pacific, attracted by the Victorian gold rush. It had previously been involved in the Californian gold rush carrying passengers from Nicaragua to San Francisco as they crossed the American continent from Europe and the east coast of America. The surviving engine parts and propellor are significant as they represent a transition phase from wooden hulled steamships to iron screw steamships, and a phase of rapid development in marine steam engine technology. It is also rare as at the time most American steamships were paddle steamers. It had a short career on the Australian coast, being wrecked on Tullaberga Island after only one month in service. Thirty seven lives were lost in the disaster, of whom 35 were passengers including its owner, and it led to the building of the Gabo Island lighthouse.