Saukko (Pu110) was a small submarine that served in the Finnish Navy during the Second World War. It was designed not to exceed , as it was planned for use in Lake Ladoga, and according to the 1920 Treaty of Tartu, no nation was allowed to use naval ships of more than 100 tonnes on the lake (When completed, Saukko weighed somewhat more than this).
Saukko (Pu110) was a small submarine used by the Finnish Navy during World War II. It was designed to be under 100 tons, as it was intended for use in Lake Ladoga, and according to the 1920 Treaty of Tartu, no nation was allowed to use naval ships over 100 tonnes on the lake (When completed, Saukko weighed more than this).