 Complete the following phrase:  The lack of coastal defenses was keenly felt with Russian landings in Helsingfors in the spring of 1713 and the Swedish failure to blockade the Hanko Peninsula in 1714. A Russian naval campaign against the Swedish coast towards the end of the Great Northern War further outlined the need to develop Finnish coastal defenses. Immediately after the war ended the first plans were set in motion in Sweden to construct an archipelago fleet and a base of operations for it in Finland. However, nothing with regard to Sveaborg took place until the end of 