HSwMS Näcken

Several ships of the Swedish Navy have been named HSwMS Näcken, named after the mythological water spirit:


 * HSWMS Näcken (1942), a Neptun-class submarine launched in 1942 and decommissioned in 1966
 * HSWMS Näcken (1978), a Näcken-class submarine launched in 1978 and decommissioned in 2005