De Neumann began developing thoughts on the potential for a port-control system while he was captain of HMRC "Vigilant". <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk>
1953 North Sea flood resulted in the flooding of Canvey Island, Foulness and the East Coast<unk>1953 North Sea flood resulted in the flooding of Canvey Island, Foulness and the East Coast<unk>1953 <unk> <unk> <unk> <unk> <unk> <unk>