SMS Nassau

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NameNassau
Laid down22 July 1907
Nassau, very early in her career
History
Germany
NameNassau
NamesakeDuchy of Nassau part of the Prussian province of Hesse Nassau[1]
BuilderKaiserliche Werft, Wilhelmshaven
Laid down22 July 1907
Launched7 March 1908
Commissioned1 October 1909
FateCeded to Japan as war prize, sold for scrap in 1920
General characteristics
Class & typeNassau-class battleship
Displacement
Length146.1 m (479 ft 4 in)
Beam26.9 m (88 ft 3 in)
Draft8.9 m (29 ft 2 in)
Installed power
Propulsion
Speed20 knots (37 km/h; 23 mph)
RangeAt 12 knots (22 km/h; 14 mph): 8,300 nmi (15,400 km; 9,600 mi)
Complement
  • 40 officers
  • 968 men
Armament
Armor

SMS Nassau[a] was the first dreadnought battleship built for the Imperial German Navy. Nassau was laid down on 22 July 1907 at the Kaiserliche Werft in Wilhelmshaven, and launched less than a year later on 7 March 1908, approximately 25 months after Dreadnought. She was the lead ship of her class of four battleships, which included Posen, Rheinland, and Westfalen.

Nassau saw service in the North Sea at the beginning of World War I, in II Division of I Battle Squadron of the German High Seas Fleet. In August 1915, she entered the Baltic Sea and participated in the Battle of the Gulf of Riga, where she engaged the Russian battleship Slava. Following her return to the North Sea, Nassau and her sister ships took part in the Battle of Jutland on 31 May – 1 June 1916. During the battle, Nassau collided with the British destroyer HMS Spitfire. Nassau suffered a total of 11 killed and 16 injured during the engagement.

After World War I, the bulk of the High Seas Fleet was interned in Scapa Flow. As they were the oldest German dreadnoughts, the Nassau-class ships were for the time permitted to remain in German ports. After the German fleet was scuttled, Nassau and her three sisters were surrendered to the victorious Allied powers as replacements for the sunken ships. Nassau was ceded to Japan in April 1920. With no use for the ship, Japan sold her to a British wrecking firm, which then scrapped her in Dordrecht, Netherlands.

Characteristics

Design work on the Nassau class began in late 1903 in the context of the Anglo-German naval arms race; at the time, battleships of foreign navies had begun to carry increasingly heavy secondary batteries, including Italian and American ships with 20.3 cm (8 in) guns and British ships with 23.4 cm (9.2 in) guns, outclassing the previous German battleships of the Deutschland class with their 17 cm (6.7 in) secondaries. German designers initially considered ships equipped with 21 cm (8.3 in) secondary guns, but erroneous reports in early 1904 that the British Lord Nelson-class battleships would be equipped with a secondary battery of as many as ten 25.4 cm (10 in) guns prompted them to consider an even more powerful ship armed with an all-big-gun armament consisting of eight 28 cm (11 in) guns. This initial version was approved in March 1905, but further developments were incorporated over the course of the year, in part due to lessons learned during the on-going Russo-Japanese War. By January 1906, the design was refined into a larger vessel with twelve of the guns, by which time Britain had begun work on the all-big-gun battleship HMS Dreadnought.[2][3]

Plan and profile drawing of the Nassau class

Nassau was 146.1 m (479 ft 4 in) long, 26.9 m (88 ft 3 in) wide, and had a draft of 8.9 m (29 ft 2 in). She displaced 18,873 metric tons (18,575 long tons) with a normal load, and 20,535 t (20,211 long tons) fully laden. She had a flush deck and a ram bow, a common feature for warships of the period. Nassau had a fairly small superstructure, consisting primarily of forward and aft conning towers. She was fitted with a pair of pole masts for signaling and observation purposes. The ship had a crew of 40 officers and 968 enlisted men.[4][5]

Nassau retained 3-shaft triple expansion engines instead of the more advanced turbine engines. Steam was provided to the engines by twelve coal-fired water-tube boilers, which were vented through two funnels. Her propulsion system was rated at 22,000 metric horsepower (22,000 ihp; 16,000 kW) and provided a top speed of 20 knots (37 km/h; 23 mph). She had a cruising radius of 8,300 nautical miles (15,400 km; 9,600 mi) at a speed of 12 knots (22 km/h; 14 mph).[4][5][b]

Nassau carried a main battery of twelve 28 cm (11 in) SK L/45[c] guns in six gun turrets arranged in an unusual hexagonal configuration. One was placed forward, another toward the stern, and the remaining four were placed on the wings, two per broadside. Her secondary armament consisted of twelve 15 cm (6 in) SK L/45 guns, mounted in casemates located amidships. Close-range defense against torpedo boats was provided by a tertiary battery of sixteen 8.8 cm (3 in) SK L/45 guns, which were also mounted in casemates.[4] The ship was also armed with six 45 cm (17.7 in) submerged torpedo tubes. One tube was mounted in the bow, another in the stern, and two on each broadside, on either ends of the torpedo bulkhead.[5]

The ship's hull was protected by heavy armor plate consisting of Krupp cemented steel. The belt armor along the sides of the hull was 29 cm (11.5 in) thick in the central portion, tapering down to 10 cm (4 in) at the bow. The belt was reinforced by an armored deck that angled downward at the sides to connect to the bottom edge of the belt. The deck was 3.8 cm (1.5 in) on the flat portion, while the sloped sides increased in thickness to 5.8 cm (2.3 in). Nassau's main battery turrets had 28 cm of Krupp steel on their faces. Her forward conning tower had 30 cm (11.8 in) of armor plate on the sides, while the aft tower received only 20 cm (7.9 in) on the sides.[4][9]

Service history

Notes

References

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