SMS Regensburg - Design

Design

Regensburg was ordered under the contract name "Ersatz Irene" and was laid down at the AG Weser shipyard in Bremen in 1912 and was launched on 25 April 1914; the mayor of Regensburg, Hofrat Josef Bleyer, christened the ship. She was commissioned into the High Seas Fleet on 3 January 1915. The ship was 142.7 meters (468 ft) long overall and had a beam of 13.8 m (45 ft) and a draft of 5.75 m (18.9 ft) forward. She displaced 6,382 t (6,281 long tons; 7,035 short tons) at full combat load. Her propulsion system consisted of two sets of Marine steam turbines driving two 3.5-meter (11 ft) propellers. They were designed to give 26,000 shaft horsepower (19,000 kW). These were powered by ten coal-fired Marine-type water-tube boilers and two oil-fired double-ended boilers. These gave the ship a top speed of 27.5 knots (50.9 km/h; 31.6 mph). Regensburg carried 1,280 t (1,260 long tons) of coal, and an additional 375 t (369 long tons) of oil that gave her a range of approximately 5,500 nautical miles (10,200 km; 6,300 mi) at 12 knots (22 km/h; 14 mph). She had a crew of 21 officers and 364 enlisted men.

The ship was armed with twelve 10.5 cm SK L/45 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 in a superfiring pair aft. The guns had a maximum elevation of 30 degrees, which allowed them to engage targets out to 12,700 m (41,700 ft). These were later replaced with seven 15 cm SK L/45 guns and two 8.8 cm SK L/45 anti-aircraft guns. She was also equipped with a pair of 50 cm (19.7 in) torpedo tubes with five torpedoes submerged in the hull on the broadside. Four deck-mounted launchers were added when the gun armament was upgraded, and the submerged tubes were removed. She also could also carry 120 mines. The ship was protected by a waterline armored belt that was 60 mm (2.4 in) thick amidships. The conning tower had 100 mm (3.9 in) thick sides, and the deck was covered with up to 60 mm thick armor plate.

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