![HMS BLACK SWAN, BRITISH BLACK SWAN CLASS SLOOP. 26 FEBRUARY 1942, LONDONDERRY. | Imperial War Museums HMS BLACK SWAN, BRITISH BLACK SWAN CLASS SLOOP. 26 FEBRUARY 1942, LONDONDERRY. | Imperial War Museums](https://media.iwm.org.uk/ciim5/440/132/large_000000.jpg)
HMS BLACK SWAN, BRITISH BLACK SWAN CLASS SLOOP. 26 FEBRUARY 1942, LONDONDERRY. | Imperial War Museums
![Black Swan Class Sloops: Detailed in the Original Builders' Plans: Brown, Les: 9781526765963: Amazon.com: Books Black Swan Class Sloops: Detailed in the Original Builders' Plans: Brown, Les: 9781526765963: Amazon.com: Books](https://images-na.ssl-images-amazon.com/images/I/91M-n3dTnFL.jpg)
Black Swan Class Sloops: Detailed in the Original Builders' Plans: Brown, Les: 9781526765963: Amazon.com: Books
![Black Swan-class sloop HMS Crane (F123) leaving Singapore. T-class submarine HMS Teredo (S38) is also present. December 1961.[800 x 635] : WarshipPorn Black Swan-class sloop HMS Crane (F123) leaving Singapore. T-class submarine HMS Teredo (S38) is also present. December 1961.[800 x 635] : WarshipPorn](https://i.redd.it/5ot5bqfo86gx.jpg)
Black Swan-class sloop HMS Crane (F123) leaving Singapore. T-class submarine HMS Teredo (S38) is also present. December 1961.[800 x 635] : WarshipPorn
![HMS BLACK SWAN, BRITISH BLACK SWAN CLASS SLOOP. 26 FEBRUARY 1942, LONDONDERRY. | Imperial War Museums HMS BLACK SWAN, BRITISH BLACK SWAN CLASS SLOOP. 26 FEBRUARY 1942, LONDONDERRY. | Imperial War Museums](https://media.iwm.org.uk/ciim5/440/130/large_000000.jpg)