Three ships of the Polish Navy have been named ORP Orkan (Polish: windstorm):
ORP Orkan, formerly HMS Myrmidon was an M-class destroyer of the Polish Navy during World War II. The name translates as "windstorm". She was sunk by the German submarine U-378 on 8 October 1943 in the Barents Sea. There were 179 dead and 44 survivors.
The M-class destroyers were repeats of the preceding L class. They displaced 1,935 long tons (1,966 t) at standard load and 2,750 long tons (2,790 t) at deep load. The ships had an overall length of 362 feet 3 inches (110.4 m), a beam of 37 feet (11.3 m) and a deep draught of 14 feet (4.3 m). They were powered by Parsons geared steam turbines, each driving one propeller shaft, using steam provided by two Admiralty three-drum boilers. The turbines developed a total of 48,000 shaft horsepower (36,000 kW) and gave a maximum speed of 36 knots (67 km/h; 41 mph). The ships carried a maximum of 567 long tons (576 t) of fuel oil that gave them a range of 5,500 nautical miles (10,200 km; 6,300 mi) at 15 knots (28 km/h; 17 mph). The ships' complement was 190 officers and ratings.
ORP Orkan is an Orkan-class fast attack craft and sister ship of Grom and Piorun.
The original project was prepared by the German Democratic Republic for its navy and was named Project 660 ("Sassnitz class" in NATO code). After the Unification of Germany the unfinished hulls were bought by the Polish Navy from VEB Peenewerft shipyard in Wolgast and successfully completed in Northern Shipyard in Gdańsk.
After its completion in 1992 the ship was incorporated into the 31st Rocket Warships Squadron, 3rd Ship Flotilla.