German cruiser Blücher

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Career
Ordered: 30 October 1934
Builder: Deutsche Werke, Kiel
Laid down: 15 August 1935
Launched: 8 June 1937
Commissioned: 20 September 1939
Fate: Sunk by coastal fortress on 9 April 1940 in Oslofjord, Norway
General characteristics
Class and type: Admiral Hipper-class heavy cruiser
Displacement: 14,247 tons (standard)
18,208 tons (full)
Length: 206 m (overall)
Beam: 21.3 m
Draft: 7.7 m
Installed power: 98,000 kW (132,000 shp)
Propulsion: 3-shaft SR Deschimag turbines, 12 Wagner boilers
Speed: 32.5 knots (60.2 km/h)
Range: 6,500 nmi (12,040 km) at 17 knots (31 km/h) knots
Complement: c. 1,600
Armament: 4× 2×20,3 cm SK
6× 2×10.5 cm L/65 C/33
12× 3.7 cm L/83
8× 2 cm L/64 MG
12× 53.3 cm torpedoes
160 mines
Aircraft carried: 3× Arado Ar 196, 1 catapult
For the World War I ship, see SMS Blücher.

The Blücher was a German Admiral Hipper-class heavy cruiser. She was the Kriegsmarine's newest ship at the outbreak of World War II. She was sunk by Norwegian shore defences at the Battle of Drøbak Sound on April 9, 1940, less than three years after her launch, on the first day of the invasion of Norway (Operation Weserübung).

Contents

[edit] Design

The Hipper class were built to a design that flouted the Washington Naval Treaty, to which major maritime nations were committed, as well as the Treaty of Versailles, which limited German naval development.

[edit] Operational history

Main article: Battle of Drøbak Sound

Blücher was the flagship of the naval flotilla Marine Gruppen 5, with heavy cruiser Lützow (formerly Deutschland), light cruiser Emden, with three small torpedo boats and eight small minesweepers, commanded by Rear Admiral Oskar Kummetz, transporting troops to capture Oslo in the initial stages of the German invasion of Norway - Operation Weserübung ("Weser Exercise").

The attack on the German fleet by the Norwegian guard vessel Pol III, just after midnight on April 9, 1940 had alerted the Norwegian defences, but Blücher led the line as the German flotilla approached Oscarsborg Fortress on South Kaholmen Island in the Drøbak narrows. At 04.21 hours, (Norwegian time) the fortress' guns opened fire on the Blücher. The three German-made Krupp 280 mm (11 in) guns (only two were manned due to a lack of trained gunners) of the fortress, installed in 1893 (aptly named Moses, Aaron and Josva), were obsolete, so the defenders held fire until the warships were at point-blank range (most sources state that fire was opened at a range of 1,600 to 1,800 metres (about 1 mile). The first 28 cm shell hit the Blücher right in front of the aft mast,[1] and created an inferno of flames and smoke in the midship area up to the fore mast.[2]. The second Main Battery round shortly thereafter hit the base of the fore 20.3 cm gun turret, throwing large parts of it into the fjord and igniting further fires on board.[3] There was only time for the Main Battery to fire these two rounds, due to their slow reload time with only 30 untrained recruits manning them at the time.[1] There was not time to reload; there was not even time to fire a third gun, Josva (Joshua), which was loaded, but unmanned.

The return fire from Blücher was ineffective, with the light artillery mostly pointing too high and the main batteries, 20.3 cm guns, could not fire due the damage caused by the second 28 cm round from Oscarsborg's Main Battery.

Map of Oslofjord and the fortress of Oscarsborg
Map of Oslofjord and the fortress of Oscarsborg

While fire was raging aboard Blücher, the secondary Norwegian coastal batteries pelted her with guns ranging in calibre from the small 57 millimetre pieces at Husvik on the mainland, designed to protect the fortress' minefields (not laid at the time of the invasion), to the 15 cm guns of the Kopås battery on the eastern side of the fjord. The larger guns wrought havoc on board the cruiser while the 57 mm guns concentrated on the cruiser's superstructure and anti-aircraft weapons,[4] and were partially successful in suppressing the fire from her light artillery as the Blücher slowly sailed past the fortress. The Husvik Battery had to be abandoned when Blücher passed in front of it and fired her light AA guns directly down into the positions.[4] One of the 15 cm rounds from Kopås disabled the Blücher's steering system and forced the cruiser's crew to steer her using the engines and propeller to avoid running aground.

The Germans were unaware of a torpedo battery near Oscarsborg's main gun battery at North Kaholmen Island. Built in 1901, it was equipped with three shore-mounted dual elevators firing the torpedoes via underwater tunnels. The torpedoes were Austrian-built Whitehead torpedoes of the same turn-of-the-century vintage. These torpedoes had been practice-launched well over 200 times before being fired in anger, and no-one was certain if they would function or not.[5] They did. Blücher received two direct hits, one near her forward turret Anton and the second in the engine room, leaving her drifting out of control in the narrow fjord. The torpedoes sealed her fate. The rest of the flotilla, seeing the torpedo explosions, mistakently believed that the Blücher had hit mines. As a result, the flotilla reversed out of the narrows, thus ensuring that Oslo would not be invaded at dawn as intended. Before the remaining ships of the invasion force could withdraw, the Lützow was hit three times by the Kopaas battery and her Anton and Bruno turrets were disabled. The damaged Lützow steamed at full-speed astern, into mist and out of the Norwegian shore batteries' zone of fire.

Blücher sinking in the Oslofjord
Blücher sinking in the Oslofjord

Attempts were made to run Blücher aground on the Nesodden peninsula, but they failed. At 06.00 hours, the damaged and now sinking Blücher dropped anchor at Askholmen. The purpose was to let wind and current swing the stern closer to Askholmene to rescue more of the crew and soldiers onboard. Askholmene is 6 nautical miles (11 km) south of Oslo and out of the arc of fire from the Norwegian shore batteries. Her torpedoes were fired into the sides of the fjord to prevent them from exploding aboard the ship. At 06.23 the fires reached the 10.5 cm ammunition magazine which detonated, dooming the ship. By 7.00 with no hope of containing the fires, the order to abandon ship was given. At 7.22 hours, the Blücher capsized and sank. Of the 2,202 crew and troops on board[6], some 830 died (at least 320 of them crewmen). Most either drowned or burnt to death in the flaming oil slick surrounding the wreck. The survivors came ashore on either side of the fjord. The Blücher's sailors were ordered to give up their life jackets (all sailors are expected to be able to swim) to the troops on board, thus saving the lives of a significant number of soldiers. Her Commanding Officer, Kapitan zur See Heinrich Woldag, survived the sinking, but was killed in a plane crash eight days later.

The delay caused to the landings in Oslo allowed the Norwegian royal family, parliament and cabinet to escape. Norway's gold reserves were also moved out of reach of the invaders and ultimately shipped abroad for Norway's use during the war.

Blücher remains where she sank in Oslofjord, about one kilometer north of Oscarsborg Fortress. She continues to leak oil, causing some environmental concerns.

Two of the anchors of the ship were later salvaged. One of them is on display at the pier of Aker Brygge in Oslo, the other is in Drøbak.

[edit] Commanding officers

KzS Heinrich Woldag - 20 September 1939 - 9 April 1940 (Woldag was killed 17 April 1940 in an air crash over the Oslofjord).[7]

[edit] Other ships of the same name

Blücher was the third German navy ship named after Prussian Field Marshal Gebhard Leberecht von Blücher (most famous for joining with the Duke of Wellington to defeat Napoleon at the Battle of Waterloo). The first German warship named after the Fieldmarshall was a corvette built at Kiel's Norddeutsche Schiffbau AG (later renamed the Krupp-Germaniawerft) and launched 20 March 1877. Taken out of service after a boiler explosion in 1907, she ended her days as a coal freighter in Vigo, Spain. On 11 April 1908, the Panzerkreuzer SMS Blücher was launched from the Imperial Shipyard in Kiel. This ship was sunk on 24 January 1915 in WWI at the Battle of Dogger Bank. It succumbed to an overwhelming force of British battle cruisers under the command of Vice Admiral David Beatty.

[edit] See also

[edit] Notes

  1. ^ a b Ribsskog 1998: 50
  2. ^ Ribsskog 1998: 50-51
  3. ^ Ribsskog 1998: 51
  4. ^ a b Fjeld 1999:36
  5. ^ Hauge 1995: 36
  6. ^ In addition to the officers and sailors of the crew, the men on board Blücher numbered 882 "passengers": Generalmajor Erwin Engelbrecht and his staff of officers; soldiers to occupy Oslo; bureaucrats and officials for taking over the administration of the capital and with it most of the central institutions of the country (as well as, importantly, the print and broadcast media); and a military band.[citation needed]
  7. ^ Deutsche-kriegsschiffe.de: Schwerer Kreuzer Blücher (German)

[edit] References

  • Fjeld, Odd T. (ed.): "Kystartilleriet 100 år", Sjømilitære Samfund ved Norsk Tidsskrift for Sjøvesen, Hundvåg 1999 ISBN 82-994738-6-1 (Norwegian)
  • Hauge, Andreas: "Kampene i Norge 1940", Krigshistorisk Forlag AS, Sandefjord 1995 (Norwegian)
  • Ribsskog, Asbjørn: "Kystartilleriet under den annen verdenskrig 1939-1945", Atheneum Forlag as, Vinterbro 1998 (Norwegian)
  • Koop; Klaus-Peter Schmolke (2001). Heavy Cruisers of the Admiral Hipper Class: The Admiral Hipper, Blucher, Prince Eugen, Seydlitz and Lutzow. Naval Institute Press. ISBN 155750332X. 
  • Binder, Frank; Hans Hermann Schlünz (1990). Schwerer Kreuzer Blücher. Koehlers Verlagsgesellschaft. ISBN 378220784X. 
  • Lyon, Hugh (1986). Encyclopedia of the World's Warships: A Technical Directory of Major Fighting Ships from 1900 to the Present Day. Book Sales. ISBN 0890097801. 
  • Whitley, M J (1995). Cruisers of World War Two: an International Encyclopedia. London: Arms and Armour Press, pp 57-63. ISBN 1-85409-225-1. 

[edit] External links

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Admiral Hipper class cruiser
Admiral Hipper · Blücher · Prinz Eugen · Seydlitz · Lützow
List of Kriegsmarine ships