Leipzig-class cruiser

File:Leipzig 07a.jpg

The two ships of the {{lang|de|Leipzig}} class were not identical, prompting some naval historians to classify them as separate designs, rather than as a ship class.{{sfn|Sieche|p=231}} Of the two, {{lang|de|Nürnberg}} was larger. {{lang|de|Leipzig}} was {{cvt|165.8|m|0}} long at the waterline and {{cvt|177|m|ftin}} long overall. She had a beam of {{cvt|16.3|m|ftin}} and a maximum draft of {{cvt|5.69|m|ftin}} forward. She displaced {{convert|6820|t|sp=us|lk=on}} as designed and {{convert|8100|t|sp=us}} at full load. {{lang|de|Nürnberg}} was slightly longer, at {{cvt|170|m|ftin}} at the waterline and {{cvt|181.3|m|ftin}} overall. Her beam was identical to {{lang|de|Leipzig}}, but her draft was slightly greater, at {{cvt|5.74|m|ftin}} forward. She displaced {{convert|8060|t|sp=us}} as designed and {{convert|9040|t|sp=us}} fully loaded.{{sfn|Gröner|p=122}}

The ships' hulls were divided into fourteen watertight compartments and had double bottoms that ran for 83 percent of the length of their keels. Both vessels had side bulges and bulbous bows. They were constructed with longitudinal steel frames, and were more than 90 percent welded in order to save weight. {{lang|de|Nürnberg}} had a large, blocky forward superstructure, while {{lang|de|Leipzig}}{{'}}s superstructure resembled that of the preceding {{sclass|Königsberg|cruiser|4||1927}}. {{lang|de|Nürnberg}} also had a large searchlight platform fitted on the funnel, while {{lang|de|Leipzig}} did not.{{sfn|Sieche|p=231}}{{sfn|Gröner|p=122}}

{{lang|de|Leipzig}} initially had a crew of 26 officers and 508 enlisted men. Later in her career, the crew grew to 30 officers and 628 sailors and then again to 24 officers and 826 sailors. She could also accommodate an admiral's staff of 6 officers and 20 enlisted men when she was serving as a flagship. {{lang|de|Nürnberg}}{{'}}s crew started as 25 officers and 648 ratings, and over the course of her career swelled to 26 officers and 870 enlisted men. The ships carried two picket boats, two barges, two launches, and two cutters.{{sfn|Gröner|p=122}}

Both ships carried one aircraft catapult for a pair of Heinkel He 60 biplane reconnaissance float planes. They were equipped with a crane to retrieve the aircraft after landing. The He 60s were later replaced by the monoplane Arado Ar 196 by 1939.{{sfn|Whitley No. 1|p=235}} {{lang|de|Leipzig}}{{'}}s catapult was located between the funnel and the forward superstructure, while {{lang|de|Nürnberg}}{{'}}s was placed aft of the funnel.{{sfn|Gröner|pp=122–123}}

File:Nurnberg 14m.jpg

The ships' propulsion system consisted of two steam turbines manufactured by the {{lang|de|Deutsche Werke}} and {{lang|de|Germaniawerft}} shipyards, along with four 7-cylinder double-acting two-stroke diesel engines built by MAN.{{sfn|Sieche|p=231}} Steam for the turbines was provided by six Marine-type double-ended, oil-fired, water-tube boilers, which were vented through a single large funnel located amidships. The engines were rated at {{convert|60000|shp|lk=in}} for the turbines plus {{convert|12400|shp|abbr=on}} for the central diesel engines. The ship's propulsion system provided a top speed of {{convert|32|kn|abbr=on}} and a range of approximately {{convert|3900|nmi|lk=in}} at {{convert|10|kn|abbr=on}} using only the diesel engines. With only the turbines in operation, the ships could steam for {{convert|2800|nmi|abbr=on}} at a speed of {{convert|16.5|kn|abbr=on}}.{{sfn|Gröner|p=122}}

The ships had extensive electrical generator systems. {{lang|de|Leipzig}} had three power plants that each had a 180 kilowatt turbo-generator and a 180 kW diesel generator; this gave the ship a combined output of 1,080 kW at 220 volts. {{lang|de|Nürnberg}} had four generators which comprised two 300 kW turbo-generators and two 350 kW diesel generators, for a total output of 1,300 kW, also at 220 volts.{{sfn|Gröner|p=122}}

Steering was controlled by a single balanced rudder, which gave the ships excellent maneuverability. The rudder was augmented with special steering system on the engine transmissions; they had gears that could drive half of the engines astern and half forward allowed the screws to assist in turning the ship at sharper angles. The ships tended toward lee helm in general conditions, but in heavy wind, they suffered from weather helm. Both vessels also suffered from severe leeway at low speeds, and the effect was especially pronounced for {{lang|de|Nürnberg}}, owing to her larger superstructure.{{sfn|Gröner|p=122}}

File:Leipzig 01min.png

{{lang|de|Leipzig}} and {{lang|de|Nürnberg}} were armed with a main battery of nine 15 cm SK C/25 guns mounted in three triple gun turrets. One was located forward, and two were placed in a superfiring pair aft, all on the centerline. They were supplied with between 1,080 and 1,500 rounds of ammunition, for between 120 and 166 shells per gun.{{sfn|Gröner|p=122}} It was intended to equip the ships with a heavy anti-aircraft battery consisting of 8.8 cm SK C/25 guns, but when tested on the light cruiser {{ship|German cruiser|Köln||2}} this gun proved unsatisfactory. Its replacement, the 8.8 cm SK C/32 gun was not yet available when {{lang|de|Leipzig}} was built, so she received two obsolete 8.8 cm SK L/45 naval gun anti-aircraft guns in single mounts; they had 800 rounds of ammunition. {{lang|de|Nürnberg}} meanwhile was built later and received four twin 8.8 cm SK C/32 guns with 3,200 rounds in total. In 1934 {{lang|de|Leipzig}} received an additional two of the obsolete 8.8 cm SK L/45.{{Sfn|Breyer||p=9}} For directing the fire of the 8.8 cm SK C/32 guns, the ships were equipped with a SL-1 director post.{{Sfn|Stehr & Breyer||p=19}}{{Sfn|Schmalenbach||p=116}} {{lang|de|Nürnberg}} also carried eight 3.7 cm SK C/30 anti-aircraft guns, and several 2 cm Flak 30/38/Flakvierling, though the number of the latter changed over her career. The two ships also carried four triple torpedo tube mounts located amidships; {{lang|de|Leipzig}} had {{cvt|50|cm}} weapons while {{lang|de|Nürnberg}} was equipped with {{cvt|53.3|cm|0}} torpedoes. They were supplied with twenty-four torpedoes.{{sfn|Gröner|p=122}} In 1934 {{lang|de|Leipzig}} had her 50 cm torpedo tubes changed for the standard 53.3 cm.{{Sfn|Breyer||p=9}} They were also capable of carrying 120 naval mines.{{sfn|Gröner|p=122}}

{{lang|de|Leipzig}} used Krupp cemented armor, while {{lang|de|Nürnberg}} received the newly developed {{lang|de|Wotan, Hart}} ("Wotan", Hard) steel. The ships were protected by an armor deck that was {{convert|30|mm|abbr=on}} thick amidships and an armor belt that was {{cvt|50|mm|0}} thick. The belt was inclined to a greater degree than in the preceding {{lang|de|Königsberg}}s, to increase the effectiveness of the same thickness of armor plate. The sloping armor that connected the deck with the belt was {{convert|25|mm|abbr=on}} thick. The conning tower had {{convert|100|mm|abbr=on}} thick sides with a 50 mm thick roof. The gun turrets had {{convert|80|mm|abbr=on}} thick faces, {{convert|35|mm|abbr=on}} thick sides, and {{convert|32|mm|abbr=on}} thick roofs. They were mounted on barbettes that were protected with {{convert|60|mm|abbr=on}} of steel plating.{{sfn|Gröner|p=122}}

File:Bundesarchiv Bild 101II-MN-1556A-11A, Norwegen, Leichter Kreuzer "Nürnberg", Flak.jpg

After the outbreak of war, both ships were fitted with a degaussing coil to protect them against magnetic mines.{{sfn|Whitley No. 1|p=235}}{{sfn|Williamson|p=35}} {{lang|de|Leipzig}} had her aircraft equipment removed in 1941, along with her aft torpedo tubes. In 1942, {{lang|de|Nürnberg}}{{'}}s aircraft handling equipment and aft torpedo tubes were also removed. Throughout the war, the ships' radar suites were upgraded; in March 1941, {{lang|de|Nürnberg}} was equipped with FuMO 21 radar and in early 1942, a FuMO 25 radar set was installed.{{sfn|Williamson|pp=35, 40}} The latter was a search radar for surface targets and low-flying aircraft at low range. The FuMO 21 set was replaced by the short-range FuMO 63 {{lang|de|Hohentwiel}} 50-centimeter radar. {{lang|de|Nürnberg}} was also fitted with four Metox radar warning receivers.{{sfn|Whitley No. 1|p=236}} {{lang|de|Leipzig}} did not receive her FuMO 24/25 radar set until 1943; this was to be the last modification for {{lang|de|Leipzig}}.{{sfn|Williamson|pp=35–36}}

{{lang|de|Leipzig}} had her anti-aircraft armament modernized to bring her closer to the standard of weaponry fitted to her sister. After 1934, two additional 8.8 cm guns were added, with another pair later. Starting in 1941, eight 3.7 cm guns were installed, along with fourteen 2 cm guns. After 1944, she only carried eight of the 2 cm guns.{{sfn|Gröner|p=122}} {{lang|de|Nürnberg}}{{'}}s anti-aircraft battery was improved over the course of World War II. In late 1942, a pair of Army-variant 2 cm {{lang|de|Flakvierling}} quadruple mounts were installed, one on the navigating bridge and the other on top of the aft superfiring turret. In May 1944, the navy proposed installing several Bofors 40 mm Automatic Gun L/60, but most of these weapons were diverted to other uses, and only two guns were installed. One was mounted on the bridge and the other where the catapult had been located. Two Navy-pattern {{lang|de|Flakvierling}}s were added; one replaced the Army model atop the aft superfiring turret, and the other was placed in front of the anti-aircraft fire director. The Army-pattern {{lang|de|Flakvierling}}s were moved to the main deck. In December 1944, another revised anti-aircraft plan was proposed, this time incorporating the new 3.7 cm FlaK 43 gun, of which there were to be eight, along with two {{lang|de|Flakvierling}}s and ten 2 cm twin mounts. Germany's wartime situation by the end of 1944 prevented these changes from being made, however.{{sfn|Whitley No. 1|pp=236–238}}

{{main|German cruiser Leipzig}}

File:Leipzig Cruiser.jpg

In the 1930s, {{lang|de|Leipzig}} was used as a training cruiser, as well as to make goodwill visits to foreign ports. She participated in non-intervention patrols during the Spanish Civil War. In late 1939, after the start of World War II, she performed escort duties for warships in the Baltic and North seas.{{sfn|Williamson|p=36}}{{sfn|Rohwer|p=9}} {{lang|de|Leipzig}} was torpedoed by the British submarine {{HMS|Salmon|N65|6}} on 13 December while on one of these operations. The cruiser was badly damaged, and the necessary repairs took almost a year to complete. She thereafter resumed her duties as a training ship. She provided gunfire support to the advancing {{lang|de|Wehrmacht}} troops as they invaded the Soviet Union in 1941.{{sfn|Williamson|pp=37–38}}

In a heavy fog in October 1944, {{lang|de|Leipzig}} collided with the heavy cruiser {{ship|German cruiser|Prinz Eugen||2}}; the damage was so severe that the navy decided complete repairs were unfeasible. Instead, they repaired {{lang|de|Leipzig}} enough to keep her afloat, and in that state, provided gunfire support to the defenders of Gotenhafen against the advancing Red Army in March 1945. As the Germans continued to retreat in the east, {{lang|de|Leipzig}} was then used to transport a group of fleeing German civilians. She reached Denmark by late April. After the end of the war, {{lang|de|Leipzig}} was used as a barracks ship for minesweeping forces and was scuttled in July 1946.{{sfn|Williamson|pp=38–39}}

File:Cruiser Nuernberg underway May 1945.jpg Liberator maritime patrol bombers]]

{{main|German cruiser Nürnberg}}

Following her commissioning, {{lang|de|Nürnberg}} participated in the non-intervention patrols during the Spanish Civil War; she completed her patrols without major incident and returned to Germany in mid-1937. After the outbreak of World War II in September 1939, she was used to lay defensive minefields off the German coast in the North Sea.{{sfn|Whitley No. 2|p=250}} She was thereafter used to escort offensive mine-layers in the North Sea until she was torpedoed by the British submarine Salmon on 13 December 1939 in the same attack that hit her sister.{{sfn|Rohwer|pp=10–11}} After repairs were completed in early 1940, {{lang|de|Nürnberg}} returned to active duty as a training ship in the Baltic Sea. She performed this role for most of the rest of the war, apart from a short deployment to Norway from November 1942 to April 1943. In January 1945, she was assigned to mine-laying duties in the Skaggerak, but severe shortages of fuel permitted only one such operation.{{sfn|Whitley No. 2|pp=252–254}}

After the end of the war, {{lang|de|Nürnberg}} was seized by the Royal Navy and ultimately awarded to the Soviet Union as war reparations. In December 1945, a Soviet crew took over the ship, and the following month took her to Tallinn, where she was renamed {{lang|ru|Admiral Makarov}}. She served in the Soviet Navy, first in the 8th Fleet, then as a training cruiser based in Kronstadt. Her ultimate fate is unclear, but by 1960, she had been broken up for scrap. {{lang|de|Nürnberg}} was the second-largest warship of the {{lang|de|Kriegsmarine}} to survive the war intact, after the heavy cruiser {{lang|de|Prinz Eugen}}, and she was the only vessel to see service after the war, albeit in a foreign navy.{{sfn|Whitley No. 2|pp=254–255}}

{{Reflist|colwidth=20em}}

• {{Cite book |last=Breyer |first=Siegfried |title=Kreuzer "Nürnberg" und "Leipzig" |publisher=Podzun-Pallas-Verlag |year=1994 |isbn=978-3-7909-0507-6 |location= |language=de |trans-title=Cruisers "Nürnberg" and "Leipzig" |ref={{sfnRef|Breyer}}}}
• {{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=Rohwer

|first=Jürgen

|author-link = Jürgen Rohwer

|title=Chronology of the War at Sea 1939–1945: The Naval History of World War Two

|publisher=Naval Institute Press

|location=Annapolis

|year=2005

|edition=Third Revised

|isbn=978-1-59114-119-8

|ref={{sfnref|Rohwer}}

}}

• {{Cite book |last=Schmalenbach |first=Paul |title=Die Geschichte der deutschen Schiffsartillerie |publisher=Koehler |year=1993 |isbn=978-3-7822-0577-1 |edition=3rd |location=Herford |language=de |trans-title=The history of German naval artillery |ref={{sfnRef|Schmalenbach}}}}
• {{cite book

| last = Sieche

| first = Erwin

| chapter = Germany

| pages = 218–254

| editor-last1 = Gardiner

| editor-first1 = Robert

| editor-last2 = Chesneau

| editor-first2 = Roger

| year = 1992

| title = Conway's All the World's Fighting Ships 1922–1946

| publisher = Conway Maritime Press

| location = London

| isbn = 978-0-85177-146-5

| url = https://books.google.com/books?id=bJBMBvyQ83EC

| ref = {{sfnRef|Sieche}}

}}

• {{Cite book |last=Stehr |first=Werner F.G. |title=Leichte und mitlere Artillerie auf deutschen Kriegsschiffen |last2=Breyer |first2=Siegfried |date=1999 |publisher=Podzun Pallas |isbn=978-3-7909-0664-6 |series=Marine-Arsenal |volume=Sonderheft band 18 |location=Wölfersheim-Berstadt |language=de |ref={{sfnRef|Stehr & Breyer}}}}
• {{cite journal

|last=Whitley

|first=M. J.

|year=1983

|title=Lesser Known Warships of the Kriegsmarine No. 1: The Light Cruiser Nürnberg

|journal=Warship

|volume=VI

|issue=23

|pages=234–238

|publisher=Conway Maritime Press

|location=London

|ref={{sfnref|Whitley No. 1}}

|isbn=978-0-87021-981-8

}}

• {{cite journal

|last=Whitley

|first=M. J.

|year=1983

|title=Lesser Known Warships of the Kriegsmarine No. 2: The Light Cruiser Nürnberg

|journal=Warship

|volume=VI

|issue=24

|pages=250–255

|publisher=Conway Maritime Press

|location=London

|ref={{sfnref|Whitley No. 2}}

|isbn=978-0-87021-981-8

}}

• {{Cite book

|last=Williamson

|first=Gordon

| author-link = Gordon Williamson (writer)

|title=German Light Cruisers 1939–1945

|year=2003

|publisher=Osprey Publishing

|isbn=978-1-84176-503-7

|location=Oxford

|ref={{sfnref|Williamson}}

}}

{{Commons category}}

• {{cite book

| last1 = Hildebrand

| first1 = Hans H.

| last2 = Röhr

| first2 = Albert

| last3 = Steinmetz

| first3 = Hans-Otto

| year = 1993

| title = Die Deutschen Kriegsschiffe: Biographien – ein Spiegel der Marinegeschichte von 1815 bis zur Gegenwart

| trans-title=The German Warships: Biographies − A Reflection of Naval History from 1815 to the Present

| volume = 5

| language=de

| publisher = Mundus Verlag

| location = Ratingen

| isbn=978-3-7822-0456-9

| ref = {{sfnRef|Hildebrand, Röhr, & Steinmetz Vol. 5}}

|name-list-style=amp

}}

• {{cite book

| last1 = Hildebrand

| first1 = Hans H.

| last2 = Röhr

| first2 = Albert

| last3 = Steinmetz

| first3 = Hans-Otto

| year = 1993

| title = Die Deutschen Kriegsschiffe: Biographien – ein Spiegel der Marinegeschichte von 1815 bis zur Gegenwart

| trans-title=The German Warships: Biographies − A Reflection of Naval History from 1815 to the Present

| volume = 6

| publisher = Mundus Verlag

| location = Ratingen

| isbn = 978-3-7822-0237-4

| language = de

| ref = {{sfnRef|Hildebrand, Röhr, & Steinmetz Vol. 6}}

|name-list-style=amp

}}

• {{cite book

|last1=Koop

|first1=Gerhard

|last2=Schmolke

|first2=Klaus-Peter

|title=German Light Cruisers of World War II: Emden, Königsberg, Karlsruhe, Köln, Leipzig, Nürnberg

|year=2002

|location=Annapolis

|publisher=Naval Institute Press

|isbn=978-1-55750-310-7

}}

• {{cite book

|last=Whitley

|first=M. J.

|title=German Cruisers of World War Two

|year=1987

|location=Annapolis

|publisher=Naval Institute Press

|isbn=978-0-87021-217-8

}}

{{Leipzig class cruiser}}

{{WWII German ships}}

{{Kriegsmarine}}

Category:Cruiser classes