The 5 cm SK L/40 gun was a German naval gun used in World War I and World War II.
The 5 cm SK L/40 gun was primarily used as an anti-torpedo boat gun aboard avisos, corvettes,gunboats,protected cruisers,submarines, torpedo boats and unprotected cruisers. It was used by the navies of the German Empire, Nazi Germany, Belgium and The Netherlands.
Ship classes that carried the 5 cm SK L/40 include:
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