HSwMS Klas Uggla
Class overview
Name	Klas class
Builders	Kockums Karlskrona Navy Yard
Operators	Swedish Navy
Preceded by	Ehrensköld class
Succeeded by	Göteborg class
Built	1930–1932
In commission	1932–1958
Planned	2
Completed	2
Lost	1
Retired	1
General characteristics
Type	Destroyer
Displacement	1,020 long tons (1,040 t)
Length	91.0 m (298.6 ft) pp
Beam	8.9 m (29.2 ft)
Draught	3.7 m (12.1 ft) max
Propulsion	2 shaft de Laval geared turbines 3 Penhoët boilers, 26,000 shp (19,388 kW)
Speed	36 knots (67 km/h; 41 mph)
Range	1,600 nmi (3,000 km; 1,800 mi) at 20 knots (37 km/h; 23 mph)
Complement	130
Armament	3 × single 120 mm (5 in)/46 calibre guns 2 × 40 mm (1.6 in) Vickers cannon 2 × triple 533 mm (21 in) torpedo tubes 2 × depth charge throwers 20 naval mines

The Klas class, also referred to as the Klas Horn class, was a pair of destroyers in service with the Swedish Navy from 1932 to 1958. They are sometimes considered part of the preceding Ehrensköld-class destroyers. Two ships in the class was constructed between 1930 and 1932, HSwMS Klas Uggla and HSwMS Klas Horn. The ships were involved in the Hårsfjärden disaster in 1941, in which both ships were damaged. Klas Uggla was raised but decommissioned, Klas Horn was repaired and continued to serve in the navy until 1958.

Description

HSwMS Klas Horn

The Klas class were an improved version of the preceding Ehrensköld-class destroyers and were sometimes considered part of the class.^[1][2] They had a standard displacement of 1,020 long tons (1,040 t) and were 91.0 m (298.6 ft) long between perpendiculars with a beam of 8.9 m (29.2 ft) and a maximum draught of 3.7 m (12.1 ft). The destroyers were powered by three Penhoët boilers delivering steam to two de Laval geared turbines each driving one propeller shaft, rated at 26,000 shaft horsepower (19,000 kW). This gave the destroyers a maximum speed of 36 knots (67 km/h; 41 mph). The Klas class carried 150 long tons (150 t) of fuel oil and had a range of 1,600 nautical miles (3,000 km; 1,800 mi) at 20 knots (37 km/h; 23 mph).^[1]

The Klas-class destroyers main armament was three single 120 mm (5 in)/46 calibre guns and two triple 533 mm (21 in) torpedo tubes. For anti-aircraft defence, the destroyers were equipped with two Vickers 40 mm (1.6 in) cannon. These were later replaced with four 25 mm (0.98 in) Bofors cannon. The destroyers were armed with two depth charge throwers for anti-submarine warfare and were issued 20 naval mines. The ships had a complement of 130.^[1]

Ships in class

Operational history

Both ships were laid down in 1929, with Klas Horn being constructed by Kockums and Klas Uggla built by the Karlskrona Navy Yard. Klas Horn was launched on 13 June 1931 and Klas Uggla on 18 June 1931. They were both completed in 1932.^[1] The Klas-class destroyers were sometimes used to escort Swedish ore carriers and German troop transports.^[3] On 17 September 1941, an unsolved explosion at Hårsfjärden Naval Base known as the Hårsfjärden disaster took place. Both Klas-class destroyers were sunk in the explosion along with the destroyer HSwMS Göteborg.^[1] In the explosion, thirty-three were killed and seventeen wounded from the three ships.^[3] Klas Horn was raised and returned to service, using parts from the non-repairable Klas Uggla. The vessel's anti-aircraft weaponry was increased to six 25 mm cannon. Klas Horn remained in active service until 1958. From 1958 until 1967, the ship was used as a training hulk. On 14 November 1967, Klas Horn was sold for scrap.^[1]

Citations

Sources

• Chesneau, Roger, ed. (1980). Conway's All the World's Fighting Ships 1922–1946. Greenwich, UK: Conway Maritime Press. ISBN 0-85177-146-7.
• Gilmour, John (2011) [2010]. Sweden, the Swastika and Stalin: The Swedish Experience in the Second World War. Edinburgh, Scotland: Edinburgh University Press. ISBN 978-0-7486-2747-9.
• Parkes, Oscar, ed. (1933). Jane's Fighting Ships 1933. Sampson Low. OCLC 669163032.