The 100 56 TK is a Finnish stationary coastal artillery gun system that repurposes the turret from the Soviet T-55 tank, mounting its 100 mm D-10 tank gun. This innovative coastal defense weapon was developed to provide mobile firepower in a fixed installation, serving as the main light weapon of the Finnish coastal artillery. The system was designed to complement the medium gun 130 53 TK in coastal defense roles, offering a cost-effective solution by utilizing existing tank technology.
These coastal artillery positions were strategically placed along Finland's extensive coastline to defend against potential naval threats.