The Nymphe class of steam corvettes were the first vessels of the type to be built for the Prussian Navy in the early 1860s. The class comprised two vessels, Nymphe and Medusa. The ships were laid down in early 1862, and Nymphe was completed by late 1863, but work on Medusa proceeded slower, owing to budgetary disputes with the Prussian parliament and a desire to use experience in building Nymphe during the former's construction. The ships were built as part of a naval expansion program aimed at countering the powerful Danish Navy in the context of the disputed ownership of Schleswig and Holstein. The ships were armed with a battery of sixteen guns, and were capable of a top speed of 12 knots (22 km/h; 14 mph) under steam power. All of the material used in their construction was domestical