Here's an article about the history of Finnish Coastal Defense Ships. Coast Defence Ships of the Finnish Navy It makes reference to a Battle of Bengstkar, in which Soviet Troops attacked a Finnish Lighthouse which was manned by Finnish troops. Here's a link to a site about the Bengstkar Lighthouse which contains details about the battle: History
Interesting shot of a T-34 turret emplacement on an Island in Henko Harbour. Difficult to make out what it is, looks a bit like an 85mm gun but I cant be sure.