Finnish: '''Hämeenmaa''' (in Finnish pronounced as /ˈhæmeːmˌmɑː/) was a gunboat that served in the Finnish Navy during World War II. She was built in 1917. As the ship had changed hands many times during the turbulent last years of World War I she had been renamed many times: In Russian service, she was called ; later, in German service, her name was German: Wulf. Finally, in 1920, the Germans handed her over to the Finns, who renamed her Finnish: Hämeenmaa. After World War II, she served as a trawler in the Baltic Sea. She was scrapped in 1953.
Finnish: Hämeenmaa took part in the tragic autumn training cruise of the Finnish Navy in 1925 when the foundered in heavy seas. Finnish: Hämeenmaa started leaking during the storm and when it finally reached the dock at Veitsiluoto its rear deck was already at sea level.
In September 1939 Finnish: Hämeenmaa joined with the Finnish Coastal Fleet in vicinity of Åland to relieve and later patrolled the northern Baltic Sea and the Sea of Åland together with her sister ship .
See main article: Naval warfare in the Winter War.
Finnish: Hämeenmaa and Finnish: Uusimaa were detached from the Coastal Fleet on 6 January 1940 to provide escorts for shipping in the Gulf of Bothnia after several submarine sightings had been made north of Åland. When returning to Turku on 25 January 1940 Finnish: Hämeenmaa damaged its propeller in the ice and had to be docked for repairs.
See main article: Baltic Sea campaigns (1939–1945).