Overview:Neil Oliver visits the birth place of his seafaring hero Lord Nelson. On the eerie shingle bank of Orford Ness, Alice Roberts leads a team trying to recreate the original war-winning experiment which proved that Radar would work. Off the Norfolk coast, Nick Crane explored the remarkable lost world of "Doggerland". Miranda Krestovnikoff wades out into the mud of the Wash", a vast tidal feeding ground for migrating birds. To investigate the appeal of the glorious Essex Fishing Smacks, Mark Horton joins a crew on competition around the Thames Estuary.