Battle of Lake Khasan
Khasan "(Хасан)" was a seagoing monitor and lead ship of her class of the Soviet Union. She was named after the Battle of Lake Khasan, a battle that took place near the town of Khasan near the Korean border in 1938 between the Soviet Union and the Empire of Japan. "Khasan" was active throughout World War II but did not participate in combat. "Khasan" was notable for being the largest river-going monitor ever built. All three ships survived the war and would continue to serve in the Soviet Navy until 1960. "Khasan" was laid down 15 June 1936, the same date as both her sister ships, and .