Graudenz-class cruiser

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Postcard depicting a sketch of SMS Regensburg
Class overview
BuildersKiel Navy Yard, AG Weser
Operators
Preceded byKarlsruhe class
Succeeded byPillau class
Built1912–1915
In commission1914–1944
Planned2
Completed2
Lost1
Retired1
General characteristics
TypeLight cruiser
Displacement
Length142.70 m (468 ft 2 in)
Beam13.80 m (45 ft 3 in)
Draft5.75 m (18 ft 10 in)
Installed power
Propulsion
Speed27.5 kn (50.9 km/h; 31.6 mph)
Range5,500 nmi (10,200 km; 6,300 mi) at 12 knots (22 km/h; 14 mph)
Crew
  • 21 officer
  • 364 enlisted men
Armament
Armor

The Graudenz class of light cruisers was a class of two ships built for the Imperial German Navy. The class comprised SMS Graudenz and SMS Regensburg. The ships both were laid down in 1912, launched in October 1913 and April 1914 and commissioned in August 1914 and January 1915, respectively. They were armed with a main battery of twelve 10.5 cm (4.1 in) guns, though over the course of their careers, they were rearmed with seven more powerful 15 cm (5.9 in) guns. They displaced 6,382 t (6,281 long tons) at full load and were rated at a top speed of 27.5 knots (50.9 km/h; 31.6 mph)

Both ships saw extensive service during

U-boat pens
there.

Design

General characteristics and machinery

SMS Regensburg in her configuration of 1918

The ships of the Graudenz class were 139 meters (456 ft)

double bottom that extended for forty-seven percent of the length of the keel.[1]

The two vessels each had a standard crew of twenty-one officers and 364 enlisted men. While serving as a second command flagship or a flotilla leader, they had an additional three officers and fourteen enlisted men for the commander's staff. They carried a number of smaller boats, including one picket boat, one barge, one cutter, two yawls, and two dinghies. The German Navy regarded the ships as good sea boats, with slight weather helm and gentle motion in a swell. The cruisers were maneuverable, but were slow going into a turn. Steering was controlled by a single large rudder. They lost speed only slightly in a head sea, but lost up to sixty percent in hard turns. They had a transverse metacentric height of .79 m (2 ft 7 in).[2]

The ships' propulsion system consisted of two sets of Marine-type

kilowatts (350 hp) at 220 Volts.[1]

Armament and armor

The ships were armed with twelve

superfiring pair aft. The guns had a maximum elevation of 30 degrees, which allowed them to engage targets out to 12,700 m (13,900 yd).[3] These were replaced with seven 15 cm (5.9 in) SK L/45 guns and two 8.8 cm (3.5 in) SK L/45 anti-aircraft guns in 1916 for Graudenz and 1917 for Regensburg. They were also equipped with a pair of 50 cm (19.7 in) torpedo tubes with five torpedoes; the tubes were submerged in the hull on the broadside. Two deck-mounted launchers were added for Graudenz when the gun armament was upgraded; Regensburg had her submerged tubes removed and four deck mounted launchers installed. Both ships could also carry 120 mines.[1]

The ships were protected by a waterline

rangefinder was added with 30 mm (1.2 in) thick steel plating. The main battery guns had 50 mm (2 in) thick gun shields.[2]

Service history

Graudenz

Graudenz saw extensive service during World War I, including serving as part of the reconnaissance screen for the

war prize and commissioned into the Italian Navy as Ancona; she remained in service until 1937 when she was stricken and broken up for scrap.[9]

Regensburg

Regensburg served in the reconnaissance forces of the High Seas Fleet during World War I.

U-boat pens there.[13]

Footnotes

  1. ^ a b c Gröner, pp. 109–110.
  2. ^ a b Gröner, p. 109.
  3. ^ Campbell & Sieche, pp. 140, 160.
  4. ^ Tarrant, pp. 31, 36.
  5. ^ Halpern, p. 197.
  6. ^ Campbell, p. 23.
  7. ^ Woodward, pp. 115–116.
  8. ^ Tarrant, p. 282.
  9. ^ Fraccaroli, p. 264.
  10. ^ Gröner, p. 110.
  11. ^ Tarrant, p. 62.
  12. ^ Woodward, pp. 118–119, 165–166.
  13. ^ a b Smigielski, p. 201.
  14. ^ The Daily News Almanac and Political Register, p. 443

References

Further reading