Design
Mainz was ordered under the contract name Ersatz Jagd and was laid down in 1907 at the AG Vulcan shipyard in Stettin. She was launched on 23 January 1909 and christened by the mayor of Mainz, Karl Emil Göttelmann, after which fitting-out work commenced. She was commissioned into the High Seas Fleet on 1 October 1909. The ship was 130.5 meters (428 ft) long overall and had a beam of 14 m (46 ft) and a draft of 5.58 m (18.3 ft) forward. She displaced 4,915 t (4,837 long tons; 5,418 short tons) at full combat load. Her propulsion system consisted of two sets of AEG-Curtiss steam turbines driving two 3.45-meter (11.3 ft) propellers. They were designed to give 19,000 shaft horsepower (14,000 kW). These were powered by fifteen coal-fired Marine water-tube boilers. These gave the ship a top speed of 26 knots (48 km/h; 30 mph). Mainz carried 1,010 t (990 long tons; 1,110 short tons) of coal that gave her a range of approximately 3,630 nautical miles (6,720 km; 4,180 mi) at 14 knots (26 km/h; 16 mph). Mainz had a crew of eighteen officers and 349 enlisted men.
The ship was armed with twelve 10.5 cm SK L/45 guns guns in single pedestal mounts. Two were placed side by side forward on the forecastle, eight were located amidships, four on either side, and two were side by side aft. She also carried four 5.2 cm SK L/55 anti-aircraft guns. She was also equipped with a pair of 45 cm (17.7 in) torpedo tubes submerged in the hull. She could also carry 100 mines. The conning tower had 100 mm (3.9 in) thick sides, and the deck was covered with up to 40 mm (1.6 in) thick armor plate.
Read more about this topic: SMS Mainz
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