HSwMS Södermanland (J21)

For other ships with the same name, see HSwMS Södermanland.

HSwMS Södermanland
History
Sweden
Name	Södermanland
Namesake	Swedish province Södermanland
Ordered	March 1953
Builder	Götaverken
Launched	28 May 1956
Commissioned	27 June 1958
Decommissioned	1 July 1982
Identification	Pennant number: J21
Fate	Scrapped, 1985
Badge
General characteristics
Class and type	Östergötland-class destroyer
Displacement	2,180 t (2,150 long tons) standard 2,600 t (2,600 long tons) full load
Length	112 m (367 ft 5 in)
Beam	11.2 m (36 ft 9 in)
Draft	3.7 m (12 ft 2 in)
Propulsion	2 shaft geared turbines, 2 boilers, 47,000 hp (35,000 kW)
Speed	35 kn (65 km/h)
Range	3,000 nmi (6,000 km) at 20 knots (37 km/h)
Armament	2 × dual 120 mm (4.7 in) m/44 guns 7 × single Bofors 40 mm m/48 guns 6 × single 533 mm (21.0 in) torpedo tubes Torped 61 1 × Squid anti-submarine mortar 1 × quad Seacat SAM

HSwMS Södermanland (J21) was the second ship of the Östergötland-class destroyer.

Design

Main article: Östergötland-class destroyer

Due to time and cost, HSwMS Östergötland, like the other ships in the class, was built largely according to the drawings of the Öland-class destroyer. The length of the ship was 111.8 meters and the beam was 11.2 meters. Due to different equipment, however, the new vessels became about 200 tons heavier, which gave a draft of 3.7 meters, against the Öland-class of 3.4 meters. The machinery consisted of two oil-fired steam boilers of the Babcock & Wilcox brand, which supplied steam with a pressure of 32 bars to two steam turbines of the DeLaval brand, which in turn each operated a propeller. The machinery gave the effect 47,000 horsepower on the axles, which gave a top speed of 35 knots.

The main guns consisted of four 120 mm (4.7 in) guns m/44  placed in two double towers, one on the foredeck and one on the aft deck. From the beginning, the air defense consisted of seven 40 mm automatic cannons w / 48 E. These were placed two for the superstructure, one on each side amidships, and three on the aft bridge. Around 1965, the middle cannon on the aft bridge was replaced by the anti-aircraft missile Robot 07, and to increase the stability of the ship, the two cannons were removed at the same time amidships. For the same reason, all six torpedo tubes were also placed in a tube rack, having previously stood in two racks. There were also two submarine bombers and 58 mines on board.

History

Södermanland was built at Götaverken in Gothenburg and was launched on 28 May 1956 in which her sea trial took place in 1957 and commissioned on 27 June 1958. In the case of the Södermanland, unlike her sister ship Hälsingland, Eriksbergs Mekaniska Verkstad just built the hull, with completion and fitting out done by Kockums Mekaniska Verkstads AB. The reasons for this are unclear, though it may possibly have been part of a work share agreement.

Södermanland was decommissioned on 1 July 1982 and sold in 1985 for scrapping in Spain.

References

Print

• Borgenstam, Curt; Insulander, Per; Kaudern, Gösta (1989). Jagare: med Svenska flottans jagare under 80 år (in Swedish). Västra Frölunda: Marinlitteratur. ISBN 91-970700-4-1. SELIBR 7792227.
• Gardiner, Robert; Chumbley, Stephen (1995). Conway's All The World's Fighting Ships 1947–1995. Annapolis, Maryland, USA: Naval Institute Press. ISBN 1-55750-132-7.
• Hofsten, Gustaf von; Waernberg, Jan; Ohlsson, Curt S. (2003). Örlogsfartyg: svenska maskindrivna fartyg under tretungad flagg. [Forum navales skriftserie, 1650-1837; 6] (in Swedish). Stockholm: Svenskt militärhistoriskt bibl. i samarbete med Marinlitteratur. ISBN 91-974384-3-X. SELIBR 8873330.