unrecorded age is the wreck of the Excelsior, an 80-foot-long barge. The harbour also contains a wrecked landing craft that rests with its bows almost permanently above the surface. Close to the entrance of the harbour, there is a wrecked Phoenix breakwater type C. It was originally constructed to form part of a World War 2 Mulberry Harbour. Various artefacts have been found from the prison hulks that were kept in the harbour during the Napoleonic wars. References External links RSPB reserve website Geography of Hampshire Transport in Portsmouth Ports and harbours of the English Channel Special Protection Areas in England Royal Society for the Protection of Birds reserves in England Sites of Special Scientific Interest in Hampshire Nature Conservation Review sites Ramsar sites in England Special Areas of Conservation in England