Finnish steamboat Oikonna sunk due hitting a Russian mine according to the Dutch newspaper Soldaten Courant dated 3 January 1917

An item referred to a tiding received from Copenhagen by the German newspaper Frankfurter Zeitung struck the Finnish steamboat Oikonna of 1,076 tons a Russian mine and sunk. She was transporting a regiment coastal artillery stationed on the Aalands islands to Helsingfors. Nearly fifty men were saved. Further more were 1,000 horses killed. A few days later was the regular mail ferry between Abö and Mariahamn lost. Both incidents were a result of badly anchored mines in the new Russian minefield in the Finnish Gulf.