The 10.5 cm SK L/45 gun weighed , had an overall length of . It used a horizontal sliding-block
breech design. Cradle is usually mounted on a conical pedestal mount, bolted to the submarine deck. The guns were carefully designed according to the requirements of submarine operations and was therefore streamlined in design. Many items manufactured from brass to resist corrosion. It was used on many German and foreign ships like
SMS Mowe and
Ottoman cruiser Midilli. ==Naval use==