カスピ小艦隊
On 22 June 1941, the day that the Germans invaded the Soviet Union, 254 G-5s were in service. The Baltic Fleet had 60, the Black Sea Fleet had 92, the Pacific Fleet had 135 and the Caspian Flotilla had six. During the war 73 were lost in action and 31 were scrapped after becoming unserviceable. By the end of the war in 1945 24 were in service with the Baltic Fleet, 134 were with the Pacific Fleet and six were still with the Caspian Flotilla.