Design
The total barrel length of the 100 TK is 5608 mm. The maximum range is about 18 km. The sustained fire rate is 6 rounds per minute and the muzzle velocity is 880 m/s with HE-FRAG shells. The breech block weighs 63.4 kg. The breech mechanism is semi automatic and the gun is loaded manually. Guns were modified for a higher maximum elevation and necessary equipment for indirect fire was added. Since the turrets were intended for coastal fortifications the turret insides were coated with asbestos-cork mixture to prevent moisture from condensing into gun position. Messaging, electric and ventilation systems were left mostly intact. A fully automatic loading system would have taken too much space, and simple counterweight operated shell hoisting mechanism was developed to transfer ammunition up to the turret.
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