HMS Clas Fleming was a mine cruiser of the Swedish Navy from World War I until the Cold War. She was named after the 17th Century Swedish admiral Clas Fleming. Commissioned in 1914, the Clas Fleming was among the first Swedish warships to use Parsons steam turbines. As built it was armed with four guns in a superfiring arrangement: one at the forecastle, one - highly unusually - on top of its armoured conning tower, one on the poop deck, and a fourth at the stern. Up to 190 mines could be carried on the main deck. In service the stern was found to be very wet on rough seas, so in 1918-19 the poop deck was extended to the stern; the guns at the stern and on the conning tower were accordingly moved to a more old-fashioned, side-by-side positions just aft of amidships. In 1926 three anti-airc