Scharnhorst is credited with Silverfir, although some sources say Gneisenau. Here is a good web reference:
The cruise of 17,800 miles in sixty days created a record for German capital ships.
Scharnhorst having sunk 8 merchant vessels totalling 47.588 gross registered tons.
Gneisenau sunk or captured 13 merchant vessels totalling 62.865 gross registered tons.
Scharnhorst and Gneisenau together sunk 1 merchant vessel on 3.237 gross registered tons.
Scharnhorst and Gneisenau sunk and captured all together 22 merchant vessels totalling 113.690 gross registered tons.