40.6 cm SK C/34 gun

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The 40.6 cm SK C/34,[Note 1] sometimes known as the Adolfkanone (Adolf gun), was a German naval gun, designed in 1934 by Krupp and originally intended for the early H-class battleships.

Description

Intended to be mounted in battleship turrets, the guns were produced in left and right-handed pairs. These pairs were split for individual mounting in the coastal defence role. The gun's barrel was approximately Script error: No such module "convert". long.[1] In a coastal defence emplacement the gun could be elevated to 52 degrees, giving it a range of Script error: No such module "convert". with the special Script error: No such module "convert". long range shell called the Adolf-shell. It used the standard German naval system of ammunition where the base charge was held in a metallic cartridge case and supplemented by another charge in a silk bag. In terms of construction the Script error: No such module "convert". guns were identical to the 38 cm SK C/34 - only the calibre of the barrel was different. The rate of fire for the weapon was around 2 rounds per minute as coastal artillery.[2]

Original naval specifications

  • Date of design - 1934
  • Entered service - 1940 (as coastal defense guns)
  • Bore - Script error: No such module "convert".
  • Length of barrel with rear piece - Script error: No such module "convert".
  • Weight of barrel - 158 metric tons (158,664 kg)
  • Rate of fire - 2 rounds per minute
  • Shell weight - standard explosive and armour-piercing shell Script error: No such module "convert". German type L/4.8 and L/4.4
  • Adolf shell (long range shell) Script error: No such module "convert". German type L/4.2
  • Propellant weight - 2 part charge total weight 302 kg for ordinary shell and 312 kg for long range shell
  • Maximum range - Standard shell 42,800 m (42.8 km); long-range shell 56,000 m (56 km)
  • Muzzle Velocity - Standard shell Script error: No such module "convert".; long-range shell Script error: No such module "convert".
  • Mountings - 2 gun turret Drh LC/34 (1,475 metric tons)

Coastal defense

Since the intended 56,000-ton H-class battleships “H” and “J” were never completed, the guns that had been designed for them were used as coastal defense artillery during the Second World War. At least twelve guns were produced; seven were sited in Norway, and three were used in Poland near Danzig. Soon after their first training shots, the Polish guns were moved to France and sited near Sangatte and renamed Batterie Lindemann in honour of the fallen captain of the battleship Script error: No such module "WPSHIPS utilities".Script error: No such module "Check for unknown parameters"., Kapitän zur See Ernst Lindemann. One of the remaining guns was used to replace the worn-out gun #2 at Batterie Lindemann, while serial #11 has not been accounted for yetScript error: No such module "Unsubst". (it may have also been used as replacement at Batterie Lindemann).

Gun sites in Poland

The first three guns were situated at the Hel Fortified Area, Poland as Battery Schleswig-Holstein (German unit MKB 2 / MAA 119) during 1940 to protect the Bay of Danzig. All three guns were fired during May and June 1941[3] and shortly after the guns were dismounted and transported to France for use as Battery Lindemann. From this new location near Sangatte in France, they were used to fire at Dover, in the county of Kent in England and shipping in the English Channel. There is a Museum of Coastal Defence located in the remains of the battery in Hel.[4]

Gun sites in Norway

File:Adolph Gun Harstad 2007-01-31.jpg
Adolf Gun at Trondenes near Harstad, Norway (2007)

The seven guns that reached their destinations in Norway were split into two batteries:

  • Battery Dietl with three guns on the island of Engeløya, Steigen. German unit MKB 4 / MAA 516
  • Battery Theo with four guns mounted at Trondenes Fort near Harstad. German unit MKB 5 / MAA 511

After the end of the war the Trondenes guns were taken over by the Norwegian Army, along with 1,227 shells. The battery was last fired in 1957 and formally decommissioned in 1964. The three Engeløya guns were sold for scrap in 1956 but the four guns at Trondenes were spared and one is open as a museum. In the summer there are normally three or four guided tours per day.[5]

Gun sites in France

The three guns from Hel, re-sited in France and renamed Batterie Lindemann (German unit MKB 6 / MAA 244), saw considerable service. The three guns were emplaced singly in turrets, protected by massive concrete encasements in places four metres thick. The battery fired 2,226 shells at Dover between 1940 and 1944. The guns were not put out of action by bombing despite being hit many times, thanks to the thick concrete. Only Bruno turret was damaged, on 3 September 1944, when a shell from a British railway gun hit its elevating gear; the battery was captured shortly afterwards.Script error: No such module "Unsubst".

Naval projectiles

  • L/4.4 m Bd Z Hb (AP) - 1,030 kg. (25 kg. bursting charge) Armour-piercing shell, rear fuse
  • L/4.8 m KZ m Hb (HE) - 1,030 kg. (80 kg. bursting charge) High-explosive shell, front fuse
  • L/4.6 m Bd Z Hb (SAP)- 1,030 kg. (45 kg. bursting charge) High-explosive shell, rear fuse

Coastal artillery projectiles

File:Adolf-shells-Harstad.JPG
600 kg "Adolf" shells with extended range; Harstad
  • L/4.2 m KZ m Hb (Adolf) (HE)- 600 kg. 50 kg. bursting charge. Both front and rear fuse
  • L/4.1 m KZ m Hb (HE) - 610 kg. 50 kg. bursting charge.

See also

Weapons of comparable role, performance and era

Footnotes

Notes

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  1. ↑ SK - Schnelladekanone (quick loading cannon); C - Construktionsjahr (year of design)

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Citations

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  1. ↑ sources state between Script error: No such module "convert".)
  2. ↑ Script error: No such module "citation/CS1".
  3. ↑ Script error: No such module "citation/CS1".
  4. ↑ The Museum of Coastal Defence
  5. ↑ Adolfkanonene på Trondenes - 40,6cm SK C/34

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Further reading

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  • Harald Isachsen "The Adolf Guns" In the batteries at Dietl/Steigen, Theo/Trondenes, Lindemann/Calais, Schleswig-Holstein/Hel, Template:ISBN

External links

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Template:WWIIGermanGuns

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