40,6 см SK C/34 теңіз топы (Адольф топы)

The 40.6 cm SK C/34, 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.

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 long. In a coastal defence emplacement the gun could be elevated to 52 degrees, giving it a range of with the special 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 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.

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 German battleship Bismarck, 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 yet (it may have also been used as replacement at Batterie Lindemann).

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 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.

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.

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

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.