The two submarines of the U-1 class, U-1 and U-2, were built for the Austro-Hungarian Navy. Constructed according to an American design, they were launched in 1909. A diving chamber, wheels for traveling along the seabed, and other experimental features were tested extensively in sea trials. Their gasoline engines were replaced around the start of World War I over safety and efficiency concerns. The boats have been described by naval historians as obsolete by the time they were commissioned in 1911. Both submarines were mobilized briefly during the Balkan Wars, and otherwise served as training boats before 1915. From 1915 to 1918 they conducted reconnaissance cruises out of Trieste and Pola, though neither sank any enemy vessels during the war. Facing defeat in October 1918, the Austro-Hungarian government transferred the bulk of its fleet, including these submarines, to the newly formed State of Slovenes, Croats and Serbs to avoid having to hand its ships over to the Allied Powers.
The Australasian Antarctic Expedition (1911–1914), headed by Douglas Mawson, explored the largely uncharted coast of Antarctica due south of Australia. Mawson was inspired to lead his own venture by his experiences on Ernest Shackleton's Nimrod expedition in 1907–1909. During its time in Antarctica,
test The Australasian Antarctic Expedition (1911–1914), headed by Douglas Mawson, explored the largely uncharted coast of Antarctica due south of Australia. Mawson was inspired to lead his own venture by his experiences on Ernest Shackleton's Nimrod expedition in 1907–1909. During its time in Antarctica, the Australasian Antarctic Expedition's sledging parties covered around 2,600 miles (4,180 km) of unexplored territory. Its ship, SY Aurora (pictured), navigated 1,800 miles (2,900 km) of unmapped coastline. Scientific activities included meteorological measurements, magnetic observations, an expansive oceanographic program, and the collection of many biological and geological samples, including the discovery of the first meteorite found in Antarctica. The expedition was the first to establish and maintain wireless contact between Antarctica and Australia. Its broad exploration program laid the groundwork for Australia's later territorial claims in Antarctica