Prison ship ships at sea, claiming legal authority to do so. In 2009 the US Navy converted the main deck aboard the supply ship into a brig to hold pirates captured off the coast of Somalia until they could be transferred to Kenya for prosecution. The brig was capable of holding up to twenty-six prisoners and was operated by a detachment of Marines from the 26th Marine Expeditionary Unit. 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
Abel Magwitch Herbert (during one of Pip's stays at the country) discover that they are being watched and lodge Magwitch (who is to go by the name of Mr. Campbell) in the house of Herbert's fiancée. An escape for Magwitch from England is prepared. Magwitch is to be put aboard a steamer bound for Hamburg. As it is not possible to board at a port due to Magwitch's wanted status, they try to row to the steamer from the banks of the Thames in Essex after the steamer has left the port of London. Unusually, a well-manned boat comes out to intercept