lauttasaari was fortified during the crimean war, but had been disarmed in 1895. during the first world war the only battery was a land front battery number 116 at vaskiniemi, armed with four model 1867 guns in march 1915. this battery supported base xxxvii located in southern espoo at tapiola—otaniemi area. the only naval front connection lauttasaari had was an unfinished searchlight station in länsiulapanniemi and bakery constructed between 1916 and 1917 near the land front battery that was also used to supply the coastal forts on the nearby islands. lauttasaari was officially delegated to land front already in spring 1915.