28 cm SKC naval gun

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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