Ireland, County Mayo, Murrisk, The National Famine Memorial.

Ireland, County Mayo, Murrisk, The National Famine Memorial.

Angola, Luanda, Small moored fishing boat, with dredging and cargo ships in background.

USA, New York, Manhattan, South Street Seaport, general view.

Spain, Catalonia, Barcelona, View across Port de la Pau in the harbour.

Spain, Catalonia, Barcelona, View across Port de la Pau in the harbour.

Spain, Catalonia, Barcelona, View over the commercial port from the hilltop Parc du Montjuic.

Spain, Catalonia, Barcelona, View over the commercial port from the hilltop Parc du Montjuic.

Spain, Catalonia, Barcelona, View across Port de la Pau in the harbour.

Spain, Catalonia, Barcelona, View across Port de la Pau in the harbour.

Mexico, Jalisco, Puerto Vallarta, Cruise ships in port at Nuevo Vallarta.

Ireland, County Cork, Cobh, Memorial to the victims of the Lusitania sinking.