Dual-purpose gun
The 10.5 cm SK C/32 was a German naval gun developed in the early 1930s and widely used by the Kriegsmarine during World War II. Its designation reflects its characteristics: “10.5 cm” indicates the 105 mm caliber, “SK” stands for Schnelladekanone (quick-loading gun), and “C/32”, Construktionsjahr or design year, marks its introduction and manufactured by Rheinmetall-Borsig from 1932. This quick-loading cannon served as both a surface and anti-aircraft weapon.
Designed as a dual-purpose weapon, the gun could engage both surface targets and aircraft. It had a barrel length of about 45 calibers and could fire shells to a maximum range of roughly 17 kilometers. The weapon was typically mounted on a turret, such as the MPL C/32, which allowed for efficient operation and a higher rate of fire. It was used on German Kriegsmarine warships and in the coastal defense Regelbau bunkers, due to its dual-purpose anti-aircraft guns and naval artillery role.
The SK C/32 was installed on a variety of German warships, including destroyers, light cruisers, auxiliary vessels and u-boats. It played an important defensive role, especially early in the war when dual-purpose guns were essential for countering both naval and aerial threats. Although reliable and versatile, its anti-aircraft effectiveness became limited as aircraft speed and altitude increased, leading to the development of more advanced AA systems later in the war.
10.5 cm SK C/32 specifications
10.5 cm – caliber (105 mm)
SK – Schnelladekanone (quick-loading gun)
C/32 – Construktionsjahr (design year) 1932
It was a naval artillery gun, dual-purpose: surface and anti-aircraft gun.
Caliber: 105 mm
Barrel length: 45 calibers – 4.74 m
Range: up to 17,000 meters on surface targets and reached 10,500 kilometers height
A trained crew could fire 15 shots a minute
It used different type of projectiles:
High-explosive shell – 24.2 kg explosive cartridge
Illuminating shell – 22.7 kg long cartridge
Anti-ship projectile (ASP) – 24.4 kg (used in Norway)
Mounts:
Center pivot mount – MPL C/30: −9° to +80° (early version)
Center pivot mount – MPL C/32: −10° to +50°
Center pivot mount – MPL C/32 g. E. (large elevation): -10° to +70°
Submarine mount – Ubts L C/32: -10° to +35°
Submarine mount – Ubts L C/36: -10° to +30°
The gun was widely deployed on a variety of Kriegsmarine vessels.
– Cruiser Emden
– Destroyers like Type 1934 destroyer
– Light cruisers such as German cruiser Emden
– Minesweepers, Schnellboot (Fast Forward Escort), various training, auxiliary and coastal defense ships
– Torpedo Boats and Submarines on the I, IX and X types
It served as a dual-purpose weapon for Anti-ship, engaging surface targets and Anti-aircraft, defending against aircraft (though later AA guns became more specialized)
It was reliable and relatively fast-firing, it had a good balance between accuracy, range and rate of fire.
The specific weapon in the photos was photographed in 2025 as part of the Stützpunkt Flakbatterie Nord – a German Flak Battery at Frederikshavn in Denmark, part of the port defense group – Stützpunktgruppe Frederikshavn.
