Krupp 105mm fortress gun M. 1891

 

 

 

 

Bulgarian designation :

105-мм нескорострелно оръдие Д-35

Romanian designation :

Tunul Krupp, calibrul 105 mm, model 1891

Krupp denomination :

10,5 cm Festungs- und Belagerungs- Kanone C/85

Calibre :

105mm L/35

Weight of the barrel :

1175 kg

Weight of the carriage :

1050 kg

Weight of the platform :

2000 kg

Weight of the limber :

380 kg

Barrel length :

3680 m

Number of barrel grooves :

36

Romanian ammunition

 

Battering charge :

4 kg of Prismatic Powder C/68

4.70 kg of Prismatic Powder C/82

2.25 kg of Wurf Pulver C/89

Steel shell weight :

16 kg – 936 g

Cast iron shell weight:

16 kg – 380 g

Armour piercing shell weight :

16 kg – 1.9 kg

Shrapnell weight :

16 kg – charge: 160 g of black powder

210 bullets x 26 g or 360 bullets x 16 g

Muzzle velocity :

480 m/s

Max. range :

9520 m

German ammunition

 

Battering charge :

1.2 kg (full charge)

790 g (reduced charge)

1.340 kg (for fixed ammunition)

10cm Schr. 96 :

16.06 kg – 506 steel bullets x 11.3 g

bursting charge : 204 g of black powder

10cm H.Gr. 16 :

16 kg – charge: 700 g

Muzzle velocity :

610 m/s (full charge)

378 m/s (reduced charge)

Max. range :

11000 m(full charge)

7500 m (reduced charge)

Elevation :

+ 35° / - 5°

Traversing angle :

4°

Remarks :

Slow firing gun. The recoil was limited by a brake. On either side of the carriage, there were two small platforms on which the gunners climbed to load and level the gun. It could use the shells of the 105mm L/30 gun and of all the 105mm field howitzers

Romania bought 60 of these guns that should be used for the defence of the intervals between the forts and the batteries of the Bukarest stronghold. In 1915 40 of these guns were assigned to 1st siege artillery regiment. In 1916 they were employed for the fortification of the Tutrakan and Cernavoda bridgehead, equipping two heavy artillery regiments : 2nd regiment had 2 three-batteries divisions (24 guns) and 3rd regiment had all its 3 divisions (36 guns) armed with them. The Bulgarian Army used at least 31 of the guns captured in Tutrakan or delivered by the German Army.

 

Pictures from Sofia Military Museum