Isle of Man Steam Packet Company England, Wales, Scotland and Ireland. Ports served included Liverpool, Silloth, Whitehaven, Holyhead, Ardrossan, Blackpool, Belfast and Dublin. Vessels and crews of the company were actively involved in both the First and Second World Wars. One vessel, , was attached to the British Grand Fleet and led the German High Seas Fleet into Scapa Flow in the Orkney Islands at the end of the First World War. Another vessel, "Viking", was converted to become a seaplane carrier, serving as . During the First World War, eleven out of a total fleet of fifteen Steam Packet ships were requisitioned by the Admiralty.
Naval warfare in the Mediterranean during World War I Naval warfare in the Mediterranean during World War I There was sporadic naval warfare in the Mediterranean during World War I between the Central Powers' navies of Austria-Hungary, Germany and the Ottoman Empire and the Allied navies of Italy, France, Greece, Japan, America and the British Empire. Austria-Hungary was a medium-sized naval power in 1914. It had a coastline from Trieste (in present-day Italy) to below Cattaro in Montenegro. The Austro-Hungarian Navy had nine pre-dreadnought and four dreadnought s and a number of submarines. In addition, the Germans managed to send some U-boats to the Mediterranean which operated from Austrian