HSwMS Clas Fleming

History
Sweden
Name	Clas Fleming
Namesake	Clas Fleming
Ordered	17 May 1910
Builder	Bergsund Finnboda, Stockholm
Launched	14 December 1912
Commissioned	February 1914
Refit	New engines and armament 1939–1940
Stricken	January 1959
Fate	Sold for scrap 1960
Badge
General characteristics (as built)
Class and type	Clas Fleming class minelayer-cruiser
Displacement	1,550 long tons (1,575 t)
Length	80.2 m (263 ft 1 in)
Beam	10.4 m (34 ft 1 in)
Draft	4.3 m (14 ft 1 in)
Propulsion	2 shaft Parsons steam turbines, 8 Yarrow-type boilers 6,500 ihp (4,847 kW)
Speed	20 knots (23 mph; 37 km/h)
Complement	161
Armament	4 × 1 - 4.7 in (120 mm) guns 190 mines
Armor	Deck: 16–25 mm (0.63–0.98 in) Conning tower: 75 mm (3 in)

HSwMS Clas Fleming was a mine cruiser of the Swedish Navy from World War I until the Cold War. She was named after the 17th century Swedish admiral Clas Fleming.

Commissioned in 1914, Clas Fleming was among the first Swedish warships to use Parsons steam turbines. As built it was armed with four 120 mm (4.7 in) guns in a superfiring arrangement: one at the forecastle, one - highly unusually - on top of its armoured conning tower, one on the poop deck, and a fourth at the stern. Up to 190 naval mines could be carried on the main deck. In service the stern was found to be very wet on rough seas, so in 1918-19 the poop deck was extended to the stern; the guns at the stern and on the conning tower were accordingly moved to a more old-fashioned, side-by-side positions just aft of amidships. In 1926 three 25 mm (0.98 in) anti-aircraft guns were added, one on the conning tower and two just behind the amidships 120mm guns.

In November 1939 Clas Fleming was extended with a 6-metre (20 ft) long new section to make room for four new six-cylinder two-stroke diesel engines; these however did not drive the propeller shafts directly, but were gas generators for the turbines, a rare arrangement never before used on a ship. Of the eight original coal-fired boilers only two were retained, and these were modified to oil firing.

After World War II Clas Fleming was placed in reserve in Stockholm, and was decommissioned on 1 January 1959.

Bibliography[]

• Gardiner, Robert; Gray, Randal, eds. (1985). Conway's All the World's Fighting Ships: 1906–1921. Annapolis: Naval Institute Press. ISBN 0-85177-245-5.
• Harris, Daniel G. (2004). Preston, Antony (ed.). Minelayer Clas Fleming: An Early Gas Turbine Ship. Warship. Vol. 2004. London: Conway Maritime Press. pp. 92–98. ISBN 0-85177-948-4.

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