BLACK SWAN sloops (4, 1939

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BLACK SWAN sloops (4, 1939 - 1941)

Ships

Name	No	Yard No	Builder	Laid down	Launched	Comp	Fate
Flamingo	L18 - U18, 1948- F18	1716	Yarrow, Scotstoun	5.1938	18.4.1939	12.1939	to West Germany 1.1959 (Graf Spee)
Black Swan	L57 - U57, 1948- F57	1717	Yarrow, Scotstoun	6.1938	7.7.1939	1.1940	BU 9.1956
Erne	U03, 1948- F03	317	Furness, Haverton Hill	5.1938	5.8.1940	4.1941	RNVR drill ship Wessex 6.1952
Ibis	U99	318	Furness, Haverton Hill	9.1939	28.11.1940	8.1941	sunk 10.11.1942

Technical data

Max speed, kts, kn	19.75
Displacement standard, t	1300
Displacement full, t	1770 - 1945
Length, m	91.3
Breadth, m	11.4
Draught, m	3.33 - 3.56 deep load
No of shafts	2
Machinery	2 sets Parsons geared steam turbines, 2 Admiralty 3-drum boilers
Power, h. p.	4300
Fuel, t	oil 403 - 428
Endurance, nm(kts)
Armament	Black Swan: 3 x 2 - 102/45 QF Mk XVI, 2 x 4 - 12.7/62, 4 DCT, 2 DCR (40), 34 mines, mechanical minesweeping gear Flamingo: 3 x 2 - 102/45 QF Mk XVI, 1 x 4 - 40/39 2pdr QF Mk VIII, 2 x 4 - 12.7/62, 4 DCT, 2 DCR (40) Ibis: 3 x 2 - 102/45 QF Mk XVI, 1 x 4 - 40/39 2pdr QF Mk VIII, 2 x 1 - 20/70 Oerlikon Mk II/IV, 4 DCT, 2 DCR (40) Erne: 3 x 2 - 102/45 QF Mk XVI, 1 x 4 - 40/39 2pdr QF Mk VIII, 2 x 1 - 20/70 Oerlikon Mk II/IV, 4 DCT, 2 DCR (40), mechanical minesweeping gear
Electronic equipment	presumably type 285 radar, type 127 sonar
Complement	180

Standard scale images

Wild Goose 1944

Project history

Development of Egret class but by 2m longer, faster and with the changed armament structure: quadruple pompom was installed instead of one 102mm mount. Besides, first two ships built under 1937 Programme (Black Swan and Erne), had minesweeping equipment but it was not installed on subsequent ships.

Modernizations

1941, Black Swan: - 2 x 4 - 12.7/62; + 1 x 4 - 40/39 2pdr QF Mk VIII, 1 x 1 - 20/70 Oerlikon Mk II/IV, Type 286 radar

1941, Erne: + Type 285, Type 286 radars

1942, Flamingo: - 2 x 4 12.7/62, Type 127 sonar; + 2 x 1 - 20/70 Oerlikon Mk II/IV, 1 x 24 - 178 Hedgehog ASWRL, Type 271, Type 286 radars, Type 144 sonar

1942, Black Swan: - Type 127 sonar; + 2 x 1 - 20/70 Oerlikon Mk II/IV, 1 x 24 - 178 Hedgehog ASWRL, Type 271 radar, Type 144 sonar

1942, Erne: - Type 127 sonar; + 5 x 1 - 20/70 Oerlikon Mk II/IV, 1 x 24 - 178 Hedgehog ASWRL, Type 271 radar, Type 144 sonar

1942, Flamingo: + 2 x 1 - 20/70 Oerlikon Mk II/IV

1943, Black Swan: - Type 144 sonar; + 3 x 1 - 20/70 Oerlikon Mk II/IV, Type 273, Type 285 radars, Type 147S sonar

1943, Erne: - 1 x 1 - 20/70

1943, all survived: DC stowage increased up to 110

1945, Black Swan: - 4 x 1 - 20/70; + 2 x 2 - 20/70 Oerlikon Mk II/IV

1/1946, Black Swan: 3 x 2 - 102/45 Mk XIX, 1 x 4 - 40/39 VII, 2 x 2 - 20/70 Mk V, 2 x 1 - 20/70 Mk III, 1 x 24 - 178 Hedgehog ASWRL, 4 DCT, 2 DCR (110), 34 mines, type 271, type 273, type 285, type 286 radars, type 147S sonar

1/1946, Erne: 3 x 2 - 102/45 Mk XIX, 1 x 4 - 40/39 VII, 6 x 1 - 20/70 Mk III, 1 x 24 - 178 Hedgehog ASWRL, 4 DCT, 2 DCR (110), type 271, type 285, type 286 radars, type 144 sonar

1/1946, Flamingo: 3 x 2 - 102/45 Mk XIX, 1 x 4 - 40/39 VII, 4 x 1 - 20/70 Mk III, 1 x 24 - 178 Hedgehog ASWRL, 4 DCT, 2 DCR (110), type 271, type 285, type 286 radars, type 144 sonar

Naval service