View source for Graudenz-class cruiser

{{Short description|Class of light cruisers of the German Imperial Navy}}
{{Use shortened footnotes|date=October 2022}}
{{good article}}
{|{{Infobox ship begin
}}
{{Infobox ship image
| Ship image = File:REGENSBURG LCCN2014709611.jpg
| Ship image size = 300px
| Ship caption = Postcard depicting a sketch of {{SMS|Regensburg}}
}}
{{Infobox ship class overview
| Builders = [[Kaiserliche Werft Kiel|Kiel Navy Yard]], [[AG Weser]]
| Operators = *{{Navy|German Empire}}
*{{Navy|France}}
*{{Navy|Kingdom of Italy|name=''Regia Marina''}}
| Class before = {{sclass|Karlsruhe|cruiser|4}}
| Class after = {{sclass|Pillau|cruiser|4}}
| Built range = 1912–1915
| In commission range = 1914–1944
| Total ships building = 
| Total ships planned = 2
| Total ships completed = 2
| Total ships lost = 1
| Total ships retired = 1
}}
{{Infobox ship characteristics
| Hide header = 
| Header caption = 
|Ship type=[[Light cruiser]]
| Ship displacement = *[[Normal displacement|Normal]]: {{cvt|4912|MT|LT|lk=on}}
*[[Full-load displacement|Full load]]: {{cvt|6382|MT|LT}}
| Ship length = {{convert|142.70|m|ftin|abbr=on}}
| Ship beam = {{convert|13.80|m|ftin|abbr=on}}
| Ship draft = {{convert|5.75|m|ftin|abbr=on}}
| Ship propulsion = *2 × [[steam turbine]]s
*2 × screw [[propeller]]s
| Ship power = *12 × [[water-tube boiler]]s
*{{convert|26000|shp|abbr=on|lk=on}}
| Ship speed = {{convert|27.5|kn|1|abbr=on}}
| Ship range = {{convert|5500|nmi|abbr=on}} at {{convert|12|kn}}
| Ship crew = *21 officer
*364 enlisted men
| Ship armament = *'''As built''':
*12 × [[10.5 cm SK L/45 naval gun|{{convert|10.5|cm|in|sp=us|abbr=on}} SK L/45]] guns
*2 × 50 cm [[torpedo tube]]s
*'''After refit''':
*7 × [[15 cm SK L/45]] guns
*2 × [[8.8 cm SK L/45 naval gun|{{convert|8.8|cm|in|sp=us|abbr=on}} SK L/45]] anti-aircraft guns
*4 × 50 cm torpedo tubes
*120 [[Naval mine|mine]]s
| Ship armor = *[[Belt armor|Belt]]: {{convert|60|mm|abbr=on}}
*[[Deck (ship)|Deck]]: 60&nbsp;mm
*[[Conning tower]]: {{cvt|100|mm}}
| Ship notes = 
}}
|}

The '''{{lang|de|Graudenz}} class''' of [[light cruiser]]s was a class of two ships built for the [[Imperial German Navy]]. The class comprised {{SMS|Graudenz}} and {{SMS|Regensburg}}. The ships were both 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 {{convert|10.5|cm|in|abbr=on}} guns, though over the course of their careers, they were rearmed with seven more powerful {{convert|15|cm|in|abbr=on}} guns. They displaced {{convert|6382|t|LT|abbr=on}} at full load and were rated at a top speed of {{convert|27.5|kn}}

Both ships saw extensive service during [[World War I]], primarily in the reconnaissance forces of the [[High Seas Fleet]]. They participated in several raids on the British coast, screening for the [[battlecruiser]]s of [[I Scouting Group]]. {{lang|de|Regensburg}} saw heavy combat at the [[Battle of Jutland]], the largest naval battle of the war; {{lang|de|Graudenz}} had been damaged by a [[naval mine|mine]] and was in dock for repairs at the time of the battle. Both were involved in the [[Wilhelmshaven mutiny]] at the end of the war. Following Germany's defeat, {{lang|de|Graudenz}} was ceded to Italy and served as {{lang|it|Ancona}} until 1937, when she was sold for scrap. {{lang|de|Regensburg}} was transferred to France, where she served as {{lang|fr|Strasbourg}} until 1936, when she was converted into a [[barracks ship]]. She was ultimately scuttled in [[Lorient]] to protect the German [[U-boat pen]]s there.

==Design==

===General characteristics and machinery===
[[File:SMS Regensburg as in 1918.svg|thumb|left|SMS {{lang|de|Regensburg}} in her configuration of 1918{{efn|The bow shape in this drawing is incorrect, however; the ''Graudenz''-class cruisers had a straight [[stem (ship)|stem]], not a [[naval ram|ram bow]].{{sfn|Dodson & Nottelmann|p=150}}}}]]

The ships of the {{lang|de|Graudenz}} class were {{convert|139|m|ft|0|sp=us}} [[length at the waterline|long at the waterline]] and {{convert|142.70|m|ftin|abbr=on}} [[length overall|long overall]]. They had a [[beam (nautical)|beam]] of {{convert|13.80|m|ftin|abbr=on}} and a [[draft (hull)|draft]] of {{convert|5.75|m|ftin|abbr=on}} forward and {{convert|6.08|m|ftin|abbr=on}} aft. They [[displacement (ship)|displaced]] {{convert|4912|t|LT|sp=us|lk=on}} as designed and {{convert|6382|t|LT|abbr=on}} at [[full load]]. The ships' [[hull (watercraft)|hulls]] were constructed with [[:wikt:longitudinal|longitudinal]] steel frames and contained seventeen [[watertight compartment]]s and a [[double bottom]] that extended for forty-seven percent of the length of the keel.{{sfn|Gröner|pp=109–110}}

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 [[yawl]]s, and two [[dinghy|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 {{convert|.79|m|ftin|abbr=on}}.{{sfn|Gröner|p=109}}

The ships' propulsion system consisted of two sets of Marine-type [[steam turbine]]s, each of which drove a three-bladed screw {{convert|3.50|m|ftin|abbr=on}} in diameter. Each turbine was divided into its own engine room. They were designed to give {{convert|26000|shp|lk=in}}. These were powered by ten coal-fired Marine-type [[water-tube boiler]]s and two oil-fired double-ended boilers, divided into four boiler rooms on the centerline. These gave the ship a top speed of {{convert|27.5|kn}}. The ships carried {{convert|1280|MT|LT|abbr=on}} of coal, and an additional {{convert|375|MT|LT|abbr=on}} of [[fuel oil]] that gave them a range of approximately {{convert|5500|nmi|lk=in}} at {{convert|12|kn}}. At {{convert|25|kn}}, the range fell considerably, to {{convert|1000|nmi|abbr=on}}. Each ship had two [[turbo generator]]s and one diesel generator with a combined output of {{convert|260|kW|lk=in}} at 220&nbsp;[[Volt]]s.{{sfn|Gröner|pp=109–110}}

===Armament and armor===
The ships were armed with twelve [[10.5 cm SK L/45 naval gun|{{cvt|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 [[superfire|superfiring pair]] aft. The guns had a maximum elevation of 30&nbsp;degrees, which allowed them to engage targets out to {{convert|12700|m|yd|abbr=on}}.{{sfn|Campbell & Sieche|pp=140, 160}} These were replaced with seven [[15 cm SK L/45|{{cvt|15|cm}} SK L/45 guns]] and two [[8.8 cm SK L/45 naval gun|{{cvt|8.8|cm}} SK L/45]] anti-aircraft guns in 1916 for {{lang|de|Graudenz}} and 1917 for {{lang|de|Regensburg}}. They were also equipped with a pair of {{convert|50|cm|abbr=on|1}} [[torpedo tube]]s with five [[torpedo]]es; the tubes were submerged in the hull on the [[Broadside (naval)|broadside]]. Two deck-mounted launchers were added for {{lang|de|Graudenz}} when the gun armament was upgraded; {{lang|de|Regensburg}} had her submerged tubes removed and four deck mounted launchers installed. Both ships could also carry 120 [[naval mine|mines]].{{sfn|Gröner|pp=109–110}}

The ships were protected by a waterline [[armored belt]] that was {{convert|60|mm|abbr=on}} thick amidships and {{convert|18|mm|abbr=on}} thick on the bow. The stern was unarmored. The deck was covered with up to 60&nbsp;mm thick armor plate forward, {{convert|40|mm|abbr=on}} thick [[amidships]], and {{convert|20|mm|abbr=on}} thick aft. Sloped armor 40&nbsp;mm thick connected the deck and belt armor.  The [[conning tower]] had {{convert|100|mm|abbr=on}} thick sides and a 20&nbsp;mm thick roof. A [[Rangefinding telemeter|rangefinder]] was added with {{convert|30|mm|abbr=on}} thick steel plating. The main battery guns had {{cvt|50|mm|0}} thick gun shields.{{sfn|Gröner|p=109}}

==Service history==

===''Graudenz''===
{{main|SMS Graudenz}}

{{lang|de|Graudenz}} saw extensive service during World War I, including serving as part of the reconnaissance screen for the [[battlecruiser]]s of [[I Scouting Group]] during the [[raid on Scarborough, Hartlepool and Whitby]] in December 1914. The ship also took part in the [[Battle of Dogger Bank (1915)|Battle of Dogger Bank]] in January 1915,{{sfn|Tarrant|pp=31, 36}} and the [[Battle of the Gulf of Riga]] in August 1915.{{sfn|Halpern|p=197}} She had been damaged by a mine and was unable to participate in the [[Battle of Jutland]] in May 1916.{{sfn|Campbell|p=23}} She was assigned to the planned final operation of the High Seas Fleet in October 1918,{{sfn|Woodward|pp=115–116}} weeks before the end of the war, but [[Wilhelmshaven mutiny|a major mutiny]] forced the cancellation of the plan.{{sfn|Tarrant|p=282}} After the end of the war, the ship was ceded to Italy as a [[war prize]] and commissioned into the [[Italian Navy]] as {{lang|it|Ancona}}; she remained in service until 1937 when she was stricken and broken up for scrap.{{sfn|Fraccaroli|p=264}}

===''Regensburg''===
{{main|SMS Regensburg}}

{{lang|de|Regensburg}} served in the reconnaissance forces of the High Seas Fleet during World War I.{{sfn|Gröner|p=110}} She saw significant action at the Battle of Jutland on 31 May – 1 June 1916, where she served as the leader of the [[torpedo boat]] flotillas that screened for the I Scouting Group battlecruisers.{{sfn|Tarrant|p=62}} Like {{lang|de|Graudenz}}, {{lang|de|Regensburg}} was to have participated in the final sortie of the German fleet at the end of the war, and was involved in the mutiny that forced the cancellation of the plan.{{sfn|Woodward|pp=118–119, 165–166}} After the end of the war, she was ceded to France in 1920 and renamed {{lang|fr|Strasbourg}}.{{sfn|Smigielski|p=201}} In 1928 she took part in the Arctic rescue operations searching for the [[Airship Italia]].<ref>''The Daily News Almanac and Political Register'', p. 443</ref> Removed from service in 1936, she was used as a [[barracks ship]] in [[Lorient]] until 1944, when she was seized by the Germans and scuttled in the harbor to protect the [[U-boat pen]]s there.{{sfn|Smigielski|p=201}}

== Notes ==

===Footnotes===
{{notes
| notes =
}}

===Citations===
{{reflist|20em}}

==References==
* {{cite book
  |last=Campbell
  |first=John
  |title=Jutland: An Analysis of the Fighting
  |year=1998
  |location=London
  |publisher=Conway Maritime Press
  |isbn=978-1-55821-759-1
  |ref={{SfnRef|Campbell}}
  }}
* {{cite book
  | last1 = Campbell
  | first1 = N. J. M.
  | last2 = Sieche
  | first2 = Erwin
  | chapter = Germany
  | pages = 134–189
  | editor1-last = Gardiner
  | editor1-first = Robert
  | editor2-last = Gray
  | editor2-first = Randal
  | year = 1986
  | title = Conway's All the World's Fighting Ships 1906–1921
  | publisher = Conway Maritime Press
  | location = London
  | isbn = 978-0-85177-245-5
  | name-list-style=amp
  | ref ={{sfnRef|Campbell & Sieche}}
  | url=https://archive.org/details/conwaysallworlds0000unse_z3o0
  }}
* {{cite book
  | last1 = Dodson
  | first1 = Aidan
  | author-link1 = Aidan Dodson
  | last2 = Nottelmann
  | first2 = Dirk
  | year = 2021
  | title = The Kaiser's Cruisers 1871–1918
  | publisher = Naval Institute Press
  | location = Annapolis
  | isbn = 978-1-68247-745-8
  | ref = {{sfnRef|Dodson & Nottelmann}}
  }}
* {{cite book
  |last=Fraccaroli
  |first=Aldo
  |chapter=Italy
  |pages=252–290
  |editor1-last=Gardiner
  |editor1-first=Robert
  |editor2-last=Gray
  |editor2-first=Randal
  | year = 1986
  | title = Conway's All the World's Fighting Ships 1906–1921
  | publisher = Conway Maritime Press
  | location = London
  | isbn = 978-0-85177-245-5
  |name-list-style=amp
  |ref={{SfnRef|Fraccaroli}}
  }}
* {{cite book
  | last = Gröner
  | first = Erich
  |author-link=Erich Gröner
  | year = 1990
  | title = German Warships: 1815–1945
  | volume = I: Major Surface Vessels
  | publisher = Naval Institute Press
  | location = Annapolis
  | isbn = 978-0-87021-790-6
  | ref ={{SfnRef|Gröner}}
  }}
* {{cite book
  |last=Halpern
  |first=Paul G.
  |title=A Naval History of World War I
  |year=1995
  |location=Annapolis
  |publisher=Naval Institute Press
  |isbn=978-1-55750-352-7
  |ref={{SfnRef|Halpern}}
  }}
* {{cite book
  |last=Smigielski
  |first=Adam
  |chapter=France
  |pages=190–220
  |editor1-last=Gardiner
  |editor1-first=Robert
  |editor2-last=Gray
  |editor2-first=Randal
  |title=Conway's All the World's Fighting Ships 1906–1921
  |year=1985
  |location=Annapolis
  |publisher=Naval Institute Press
  |isbn=978-0-87021-907-8
  |name-list-style=amp
  | ref = {{SfnRef|Smigielski}}
  }}
* {{cite book
  |last=Tarrant
  |first=V. E.
  |title=Jutland: The German Perspective
  |year=1995
  |location=London
  |publisher=Cassell Military Paperbacks
  |isbn=978-0-304-35848-9
  |ref={{SfnRef|Tarrant}}
  }}
* {{cite book
  |last=Woodward
  |first=David
  |title=The Collapse of Power: Mutiny in the High Seas Fleet
  |year=1973
  |publisher=Arthur Barker Ltd
  |isbn=978-0-213-16431-7
  |location=London
  |ref={{SfnRef|Woodward}}
  }}
*{{cite journal|year=1929|journal=The Daily News Almanac and Political Register |volume=45 |publisher=Chicago Daily News Co.|location=Chicago|oclc=7509776}}

==Further reading==
{{Commons category}}
* {{cite book
  | last1 = Dodson
  | first1 = Aidan
  | last2 = Cant
  | first2 = Serena
  | title = Spoils of War: The Fate of Enemy Fleets after the Two World Wars
  | year = 2020
  | publisher = Seaforth Publishing
  | location = Barnsley
  | isbn = 978-1-5267-4198-1
  | ref = {{sfnref|Dodson & Cant}}
  }}
* {{cite book|first1=Gerhard|last1=Koop|first2=Klaus-Peter|last2=Schmolke|title=Kleine Kreuzer 1903–1918: Bremen bis Cöln-Klasse|language=de|trans-title=Small Cruisers 1903–1918: The Bremen Through Cöln Classes|publisher=Bernard & Graefe Verlag|location=München|year=2004|isbn=978-3-7637-6252-1  |name-list-style=amp}}
*{{cite book |last1=Nottlemann |first1=Dirk |editor1-last=Jordan |editor1-first=John |title=Warship 2021 |date=2021 |publisher=Osprey Publishing |location=Oxford |isbn=978-1-4728-4779-9 |chapter=The Development of the Small Cruiser in the Imperial German Navy (Part II)|pages=44–60}}

{{Graudenz class light cruiser}}
{{WWI German ships}}

{{DEFAULTSORT:Graudenz}}
[[Category:Cruiser classes]]
[[Category:Graudenz-class cruisers| ]]
[[Category:World War I cruisers of Germany]]
[[Category:Ship classes of the French Navy]]