Coastal fortresses in Gulf of Finland and
Northern Baltic in 1917
Russian coastal fortresses in Gulf of Finland and northern Baltic 1917. Note! At this time Finland and Estonia still belong to Russia. Dots are batteries and arches are approximate firing sectors. (Some batteries firing sectors and ranges are unknown, then sectors are drawn roughly estimate). Small caliber cannons and anti-aircraft guns are excluding the map. You can zoom the map to bigger scales.
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