Definitions

armorpiercing

28 cm SKC naval gun

The 28 cm German naval gun was a 283 mm gun used on the Deutschland class "pocket battleships" and the Scharnhorst class battlecruisers.

The first model was the SKC/28 used on the Deutschland class, the Scharnhorst class received a longer barreled version - the SKC/34.

The 283 mm SKC/34 gun was relatively fast loading, compared with other armament of this size. It could deliver a shot every 17 seconds. The ballistic properties of the guns made them effective against the new French Dunkerque class battlecruisers, which had an armored belt 225-283 mm, barbettes of 310-340 mm, at standard fighting distances.

Characteristics of SKC/28 and SKC/34 283 mm shells are in the table below:

Gun type Shell type Length(calibers) Total weight(kg)
SKC/28 Armor-piercing 3.7 300
Semi-armor piercing 4.2 300
Igniting 4.2 300
SKC/34 Armor-piercing 4.4 336
Semi-armorpiercing 4.4 316
Igniting 4.5 315

Effectiveness of the guns against armor in different situations:

Distance[m] 0 7,900 15,100 18,288 27,432
Shooting angle[deg] 0 3.3 7.4 9.7 18.7
Shell hitting angle[deg] 0 4.4 10.3 15.2 30.2
Shell velocity at target[m/s] 890 693 552 496 420
Side armor belt penetration[mm] 604 460 335 291 205
Deck armor penetration[mm] - 19 41 48 76

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