The Blitz class was a pair of avisos built for the German Kaiserliche Marine (Imperial Navy) in the early 1880s. The ships, Blitz and Pfeil, were the first steel-hulled ships of any kind built by the German Navy, were among the first torpedo cruiser type warships in the world, and were the progenitors of the later light cruisers of the Gazelle type. They were armed with a 12.5 cm (4.9 in) gun and one 35 cm (13.8 in) torpedo tube as their principal armament, and were capable of a top speed in excess of 15 knots (28 km/h; 17 mph). They were very successful warships, remaining in active service for more than three decades.