I thought of Charles Dickens' Great Expectations when I heard about her idea for prison ships.
In literature. Charles Dickens' novel Great Expectations opens in 1812 with the escape of the convict Abel Magwitch from a hulk moored in the Thames Estuary. In fact, the prison ships were largely moored off Upnor in the neighbouring River Medway, but Dickens used artistic licence to place them on the Thames.