Allied Warships


Black Swan class

8 ships

The sloop HMS Ibis (U 99) of the Royal Navy. She was lost on 10 Nov 1942.

Technical information

Displacement1250 BRT 
Length283 feet 
Complement180 men 

6 4" AA guns (3x2).
4 2pdr AA (1x4).
4 0.5" AA (1x4) 

Max speed19.25 knots
EnginesGeared turbines, 2 shafts 
Power3600 SHP 
Notes on class

This grouping includes all sloops capable of outrunning surfaced type VII and IX U-boats. Although production was limited by competing priorities for available turbine machinery, this design was favoured by experienced anti-submarine officers. The large number of U-boat kills credited to this class reflect the leadership of F J "Johnny" Walker who commanded the 36th Escort Group from Stork and later the 2nd Escort Group from Starling. 

All ships of the Black Swan class

Royal Indian Navy Royal Indian Navy (more on Royal Indian Navy)

HMIS Godavari (U 52)
HMIS Jumna (U 21)
HMIS Narbada (U 40)
HMIS Sutlej (U 95)

Royal Navy Royal Navy (more on Royal Navy)

HMS Black Swan (L 57 / U 57)
HMS Erne (U 03)
HMS Flamingo (L 18 / U 18)
HMS Ibis (U 99) Lost on 10 Nov 1942

8 Sloops of the Black Swan class. 1 of them was lost.

See all Sloop classes.

Books dealing with this subject include:

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