May 29—British steamer Dixiana is sunk by a German submarine, which is disguised with sails; crew saved.
May 31—Danish steamer Soborg is sunk by a German submarine in the English Channel; crew saved.
June 1—British steamer Saidieh, carrying passengers, is torpedoed without warning in the North Sea by a German submarine and sinks in fifteen minutes; seven of the crew, including a stewardess, are lost; Welsh trawler Victoria is sunk by a German submarine, several of the crew being killed by shell fire.
June 2—British submarine torpedoes a large German transport in the Sea of Marmora; German submarines sink the Norwegian steamer Cubano and the Welsh trawler Hiorld, the crews being saved; Danish schooner Salvador is sunk by a German submarine, crew saved.
June 3—Swedish steamer Lapland is sunk by a German submarine off Scotland, crew being saved; Danish steamer Cyrus is sunk by a German submarine off Scotland, crew being saved; British steamer Iona is sunk by a German submarine, crew being shelled while taking to the boats and four men being wounded; British fishing steamer Chrysophrasus is sunk by a German submarine, crew being shelled while taking to the boats; Portugal is aroused over recent sinking of two Portuguese ships by German submarines; French steamer Penfeld is sunk by a German submarine, crew saved.
June 4—British trawler Ebenezer is sunk by shell fire from a German submarine, crew escaping; British steamer Inkum is sunk by a German submarine, crew escaping; steam drifter Edna May, trawler Strathbran, sailing ship George and Mary, steam fishing vessels Cortes, Kathleen, and Evening Star, steamer Sunnet Head, trawlers Horace and Economy, all British, have been sunk by German submarines; Russian mine layer is sunk by a submarine near the Gulf of Riga.
June 5—German submarine U-51 arrives at Constantinople from Wilhelmshaven, after a voyage of forty-two days, during which she sunk the British battleships Triumph and Majestic.
June 6—Five more British trawlers have been sunk by German submarines, all the crews being saved.
June 7—The trawler Arctic, bark Sunlight, steamer Star of the West, and the trawler Dromio, all British, have been sunk by German submarines; four of the Arctic's crew were killed by shell fire from the submarine; Russian schooner Afold has been sunk by a German submarine.
June 8—German submarines sink Belgian steamer Menapier, Norwegian steamer Trudvang, Norwegian bark Superb, Norwegian steamer Glittertind, British trawlers Pentland and Saturn; sixteen die on the Menapier.