The Sinking of SMS Wien
On the 10th of December 1917, the Austro-Hungarian Monarch class battleship SMS Wien (Vienna) was attacked in port at Trieste. All three ships of the Monarch class had been relegated to harbour duties in 1914, since they were obsolete and due to be replaced by the new dreadnought battleships of the Improved Tegetthoff class. Although the first Improved Tegetthoff was scheduled to be laid down in 1914, the outbreak of war meant that no work was done on their construction, and so the operational life of the Monarch class was extended.