Sivuch (Russian - Сивуч; "sealion") was a of the Imperial Russian Navy. During World War I, she was sunk in the Gulf of Riga at the Battle of the Gulf of Riga on 19 August 1915Campbell, p. 201Budzbon, p. 301 by the German battleships Nassau and Posen.

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External links Мореходная канонерская лодка "Сивуч" (Russian)