Battle of the Gulf of Riga

Battle of the Gulf of Riga
	Part of World War I
	; Russian battleship Slava, circa 1915
Date	8–20 August 1915
Location	Gulf of Riga, Baltic Sea
Result	Entente victory
Belligerents
Russian Empire Imperial Navy; ; United Kingdom Royal Navy; ;	Germany Imperial Navy; ;
Commanders and leaders
Vasily Kanin	Franz von Hipper
Strength
1 battleship ; 1 armoured cruiser ; 16 destroyers ; 4 gunboats ; 1 minelayer ; 6 submarines	4 battleships ; 3 battlecruisers ; 1 armoured cruiser ; 5 light cruisers ; 56 torpedo boats ; 14 minesweepers
Casualties and losses
150 killed, wounded and captured ; 2 gunboats sunk ; 1 battleship damaged ; 1 destroyer damaged	65 killed and wounded ; 1 torpedo boat sunk ; 2 minesweepers sunk ; 1 battlecruiser damaged

The Battle of the Gulf of Riga was a World War I naval operation of the German High Seas Fleet against the Russian Baltic Fleet in the Gulf of Riga in the Baltic Sea in August 1915. The operation's objective was to destroy the Russian naval forces in the Gulf in preparation for landing German troops to facilitate the fall of Riga in the later stages of the Central Powers' offensive on the Eastern Front in 1915. The German fleet, however, failed to achieve its objective and was forced to return to its bases; Riga remained in Russian hands until it fell to the German Army on 1 September 1917.