Nassau class
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 SMS Rheinland |
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| Class details | ||
| Ship type |
Large-line ship ( battleship ) |
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| predecessor | Germany class | |
| successor | Heligoland class | |
| units | 4th | |
| period of service | 1909-1919 | |
| Sister ships | ||
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SMS Nassau SMS Westfalen SMS Rheinland SMS Poznan |
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| Technical specifications | ||
| Displacement | Construction: 18,873 t Maximum: 20,535 t |
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| length |
KWL : 145.6 m over everything: 146.1 m |
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| width | 29.9 m | |
| Draft | 8.76 m | |
| Armament |
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| Armor |
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| Propulsion system |
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| Machine performance | Continuous load: 22,000 PSi Test drive: 26,244– 27,117 PSi |
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| Fuel supply | 2,700 tons of coal and 160 tons of oil | |
| speed | 19 kn (test drives: 20–20.2 kn) | |
| Driving range | 8300 nm at 12 kn | |
| crew | 1008 men | |
The Nassau class was a class of four large-line ships of the Imperial Navy , named after Prussian provinces. She was the first German class of ships designed similarly to the British dreadnought battleships .
draft
The SMS Nassau was the first German dreadnought and only slightly larger than the name giver of this ship category in the service of the Royal Navy . The draft took into account the latest developments in the field of fire control, in which one could aim safely with larger guns with their greater range. Inside, wood was increasingly being replaced by sheet metal. Further structural improvements in detail concerned the system-related wall openings (cable guides, pipe systems) and the emergency equipment (fire extinguishing, bilge and flooding devices). August Müller was responsible for their construction until 1914 .
Armament
The Nassau class ships were equipped with the newly designed 28 cm SK-L / 45 guns. The tower was named "Drh.L. C / 06 “. The guns in it could be lowered 6 ° and raised 20 °. The towers on the center line could be pivoted 150 ° to either side of the ships. The side towers each had a swivel range of 160 °. The shells available were 302 kg armor-piercing projectiles, which could be fired up to 18.9 km (from 1915 20.4 km) with a maximum increase. Each gun had a supply of ammunition of 75 shells, and the turrets could fire three salvos per minute.
In addition to the 28 cm main artillery, however, in contrast to the Royal Navy, a medium artillery of 15 cm guns was retained. This had guns of the type 15 cm SK L / 45 in casemates, where they could be lowered 5 ° and raised 20 ° and pivoted by 80 ° to each side. Up to seven rounds per minute with a projectile weight of 45.3 kg could be fired at a maximum increase of 14.9 km.
Armor
In order to intercept the already very high explosive force of the torpedoes, a completely new type of torpedo protection was developed starting with the large cruiser SMS Blücher , which was retained and continuously expanded in all subsequent battleship and battlecruiser classes. The thickness of the outer skin was only 12 mm. Behind it was an empty room several meters wide, the outer rampart. Part of the explosive energy could be reduced in it. Behind another normal wall made of unarmored shipbuilding steel, the Wallgang bulkhead, was the second room, the inner Wallgang, which served as a coal or oil storage facility. Here further energy was dissipated and ensured an even load on the following torpedo bulkhead, which was made of armored material . The wall thickness of the Nassau class was 20 mm. Due to this design, German battleships had a comparatively large hull width.
SMS Poznan , port side
SMS Posen 1911, starboard side
literature
- Erwin Strohbusch: Warship building since 1848 , German Maritime Museum, Bremerhaven 1984
