HDMS Narhvalen (S320) was the lead ship of her class of submarine for the Royal Danish Navy. She was built to the German Type 205 design at the naval dockyard in Copenhagen where she was laid down on 16 February 1965. She was launched on 10 September 1968, and was commissioned into the Royal Danish Navy on 27 February 1970. In 1994, Narhvalen and sister ship Nordkaperen were modified to bring their technical performance more in line with the Royal Danish Navy's newer Tumleren class. Narhvalen was decommissioned on 16 October 2003.

History
Denmark
Name	Narhvalen
Laid down	16 February 1965
Launched	10 September 1968
Commissioned	27 February 1970
Decommissioned	16 October 2003
Fate	Scrapped
General characteristics
Class and type	Narhvalen-class submarine
Displacement	450 long tons (457 t) surfaced 500 long tons (508 t) submerged
Length	43.9 m (144 ft)
Beam	4.6 m (15 ft 1 in)
Draft	4.3 m (14 ft 1 in)
Propulsion	2 × 600 hp (450 kW) Mercedes-Benz 4-stroke V12 diesel engines each coupled to a BBC generator 1 × 1,000 kW (1,300 hp) SSW electric motor
Speed	10 knots (19 km/h; 12 mph) surfaced 17 knots (31 km/h; 20 mph) submerged
Range	4,200 nmi (7,800 km) at 5 kn (9.3 km/h) surfaced 228 nmi (422 km) at 4 kn (7.4 km/h) submerged
Test depth	100 m (330 ft)
Complement	4 officers, 18 enlisted
Armament	8 × 533 mm (21 in) torpedo tubes Torpedoes and naval mines