20.3 cm SK C / 34
| 20.3 cm SK C / 34 | |
|---|---|
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| General Information | |
| Military designation: | 20.3 cm SK C / 34 |
| Manufacturer country: |
.svg){kind=small} German Empire
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| Production time: | 1939 to 1945 |
| Weapon Category: | Ship guns, coastal artillery |
| Technical specifications | |
| Overall length: | 12.15 m |
| Caliber : |
20.3 cm |
| Caliber length : | 60 |
| Weight ready for use: | 20,700 kg |
| Cadence : | 4.5 rounds / min |
The 20.3 cm SK C / 34 (SK = Schnellladekanone ) was a ship gun of the German Navy which was used in World War II . It was installed on the heavy cruisers of the Admiral Hipper class and used as coastal artillery.
Coastal artillery
All four turrets of the unfinished heavy cruiser Seydlitz were installed as coastal artillery in France. The Anton and Dora towers were installed in the Karola battery on the Île de Ré (4th / Marine Artillery Division 282), the Bruno and Caesar towers were used as armament for the Seydlitz Battery on the Île de Groix (5th / Marine Artillery Division 264 ) is used.
Eight guns were handed over to the army and converted into 20.3 cm rail guns (E) . Because of problems with the supply of ammunition, they were used in a centralized manner for coastal defense near Brest and Cherbourg .
description
Tube type: 3 layers and loose lining tube with horizontal wedge lock
Technical specifications
Mount
- Designation: 20.3 cm wire L. C / 34
- Weight: 248 t
- Caliber: 8 inches
- Number of tubes: 2
- Number of straightening axes: 2
- Muzzle velocity: 925 m / s
- largest elevation: 37 °
- greatest depression: −10 °
- greatest firing range: 32,200 m
- maximum altitude: 10,150 m
- Lifespan: 600 shots
- Rate of fire: ~ 4.5 rounds per barrel and min.
- Max. Swivel speed: 8 ° / s
- Max. Elevation speed: 8 ° / s
ammunition
Bullets
- Tank explosive shell with base fuse and ballistic hood - phi L / 4.4 m BDZ (. M hood) to 122 kg
- High explosive grenade with bottom fuse and ballistic hood - Spgr L / 4.7 m Bdz (with hood) to 122 kg
- HE grenade with head detonator and ballistic hood - Spgr L / 4.7 KZ (with hood) to 122 kg
Propellant charge
- Sleeve cartridge: ~ 46.6 kg
- Pre-cartridge: 18.5 kg
power
- Penetration performance (Psgr m.Bdz):
| Distance [km] |
Impact speed [m / s] |
Angle of fall [°] |
Vertical penetration (KC nA) * [mm] |
Horizontal penetration (Wh) * [mm] |
|---|---|---|---|---|
| 0 | 925 | 0 | > 280 | |
| 5 | 745 | 2.5 | > 280 | no details |
| 10 | 580 | 6th | 265 | no details |
| 15th | 465 | 13 | 188 | no details |
| 20th | 380 | 23 | 133 | 50 |
| 25th | 355 | 36.5 | 107 | 67 |
| 30th | 360 | 48.5 | approx. 70 | 90 |
The penetration rate of the high explosive grenade with bottom detonator reaches around 70% of the nominal penetration rate of the tank explosive shell. However, it breaks against hardened armor material. The high-explosive grenade with head detonator causes holes about 32 cm in diameter in 50 mm of armor material or about 120 cm in diameter in 30 mm of armor material.
literature
- John Campbell: Naval Weapons of World War Two . Naval Institute Press, 1985, ISBN 0-87021-459-4 .
- MJ Whitley: Cruisers of World War Two . Brockhampton Press, 1995, ISBN 1-86019-874-0 .
- Terry Gander, Peter Chamberlain: Encyclopedia of German Weapons 1939-1945. 2nd edition, special edition, Motorbuchverlag, Stuttgart 2006, ISBN 3-613-02481-0 .
Individual evidence
- ↑ Main information about the artillery on board for the handbook for Admiralstabsoffizier, status 1.1.1939
- ↑ M.Dv. No. 185.2 Dimensions, weights and space requirements of ammunition and their packing containers
- ↑ Documents and guidelines for determining the main combat range and the choice of projectile , booklet e, Own penetration information for heavy cruisers