Design
The U-27-class boats were coastal submarines that displaced 264 metric tons (291 short tons) surfaced and 301 metric tons (332 short tons) submerged. The boats had a single hull with saddle tanks, and were 121 feet 1 inch (36.91 m) long with a beam of 14 feet 4 inches (4.37 m) and a draft of 12 feet 2 inches (3.71 m). For propulsion, they featured two shafts, twin diesel engines of 270 bhp (200 kW) for surface running, and twin electric motors of 280 shp (210 kW) for submerged travel. The boats were capable of 9 knots (16.7 km/h) while surfaced and 7.5 knots (13.9 km/h) while submerged. Although there is no specific notation of a range for the U-27 class, the German UB II boats, upon which the class was based, had a range of over 6,000 nautical miles (11,000 km) at 5 knots (9.3 km/h) surfaced, and 45 nautical miles (83 km) at 4 knots (7.4 km/h) submerged. The U-27 class boats were designed for a crew of 23–24.
The U-27 class boats were armed with two 45 cm (17.7 in) bow torpedo tubes and carried a complement of four torpedoes. They were also equipped with a 75 mm/26 (3.0 in) deck gun and an 8 mm (0.31 in) machine gun.
Read more about this topic: U-27 Class Submarine (Austria-Hungary)
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