Editing Black Swan-class sloop (section)

===Royal Navy===
Fourteen sloops for the RN were in the 1940 Supplementary War Programme. The first two were ordered from Denny, Dunbarton, on 9&nbsp;January 1941, ten more were ordered on 27&nbsp;March 1941 (two each from Cammell Laird, Scotts, Thornycroft, Yarrow and John Brown), and a final pair from Fairfield, Govan, on 18&nbsp;July 1941. The contract with John Brown was transferred to [[HMNB Devonport|Devonport Dockyard]] on 3&nbsp;March 1942, and then to Denny on 8&nbsp;December 1942.

{| class="wikitable sortable plainrowheaders" style="font-size:97%;"
|+ List of Modified ''Black Swan''-class sloops of the Royal Navy (1940 programme)
|-
! scope="col" | Name
! scope="col" | Pennant
! scope="col" | Builder
! scope="col" | Laid Down
! scope="col" | Launched
! scope="col" | Commissioned
! scope="col" | Fate
|-
! scope="row" | {{HMS|Chanticleer|U05|2}}
! scope="row" | U05
|Denny, Dunbarton
|6&nbsp;June 1941
|24&nbsp;September 1942
|29&nbsp;March 1943
|Constructive total loss following torpedoing on 18&nbsp;November 1943 by {{GS|U-515||2}} (Henke). Renamed ''Lusitania'' 31&nbsp;December 1943 as a base ship, then broken up at Lisbon 1945.
|-
! scope="row" | {{HMS|Crane|U23|2}}
! scope="row" | U23
|Denny, Dunbarton
|13&nbsp;June 1941
|9&nbsp;November 1942
|10&nbsp;May 1943
|Broken up March 1965.
|-
! scope="row" | {{HMS|Cygnet|U38|2}}
! scope="row" | U38
|Cammell Laird, Birkenhead
|30&nbsp;August 1941
|28&nbsp;July 1942
|1&nbsp;December 1942
|Broken up 16&nbsp;March 1956.
|-
! scope="row" | {{HMS|Kite|U87|2}}
! scope="row" | U87
|Cammell Laird, Birkenhead
|25&nbsp;September 1941
|13&nbsp;October 1942
|1&nbsp;March 1943
|Sunk by {{GS|U-344||2}} on 21&nbsp;August 1944.
|-
! scope="row" | {{HMS|Lapwing|U62|2}}
! scope="row" | U62
|Scotts, Greenock
|17&nbsp;December 1941
|16&nbsp;July 1943
|21&nbsp;March 1944
|Sunk by {{GS|U-968||2}} on 20&nbsp;March 1945 just outside Murmansk, USSR.
|-
! scope="row" | {{HMS|Lark|U11|2}}
! scope="row" | U11
|Scotts, Greenock
|5&nbsp;May 1942
|28&nbsp;August 1943
|10&nbsp;April 1944
|Constructive total loss following torpedoing by {{GS|U-968||2}} off Kola Inlet on 17&nbsp;February 1945; salvaged by Soviet Navy and added as ''Neptun'', finally broken up 1956.
|-
! scope="row" | {{HMS|Magpie|U82|2}}
! scope="row" | U82
|Thornycroft, Woolston
|30&nbsp;December 1941
|24&nbsp;March 1943
|30&nbsp;August 1943
|Broken up 12&nbsp;July 1959.
|-
! scope="row" | {{HMS|Peacock|U96|2}}
! scope="row" | U96
|Thornycroft, Woolston
|29&nbsp;November 1942
|11&nbsp;December 1943
|10&nbsp;May 1944
|Broken up 7&nbsp;May 1958.
|-
! scope="row" | {{HMS|Pheasant|U49|2}}
! scope="row" | U49
|Yarrow, Scotstoun
|17&nbsp;March 1942
|21&nbsp;December 1942
|12&nbsp;May 1943
|Broken up January 1963.
|-
! scope="row" | {{HMS|Redpole|U69|2}}
! scope="row" | U69
|Yarrow, Scotstoun
|18&nbsp;May 1942
|25&nbsp;February 1943
|24&nbsp;June 1943
|Broken up 20&nbsp;November 1960.
|-
! scope="row" | {{HMS|Snipe|U20|2}}
! scope="row" | U20
|Denny, Dunbarton
|21&nbsp;September 1944
|20&nbsp;December 1945
|9&nbsp;September 1946
|Broken up 23&nbsp;August 1960.
|-
! scope="row" | {{HMS|Sparrow|U71|2}}
! scope="row" | U71
|Denny, Dunbarton
|30&nbsp;October 1944
|18&nbsp;February 1946
|16&nbsp;December 1946
|Broken up 26&nbsp;May 1958.
|-
! scope="row" | {{HMS|Starling|U66|2}}
! scope="row" | U66
|Fairfield, Govan
|21&nbsp;October 1941
|14&nbsp;October 1942
|1&nbsp;April 1943
|Broken up July 1965.
|-
! scope="row" | {{HMS|Woodcock|U90|2}}
! scope="row" | U90
|Fairfield, Govan
|21&nbsp;October 1941
|26&nbsp;November 1942
|29&nbsp;May 1943
|Sold for breaking up 28&nbsp;November 1955.
|}

Another fourteen ships were authorised in the 1941 Programme, but the last three ships (the names ''Star'', ''Steady'' and ''Trial'' had been approved) were not ordered under this programme. The first of the eleven actually ordered was contracted with Thornycroft on 3&nbsp;December 1941, with a further pair from Stephens, Linthouse, on 18 December. Eight more were ordered in 1942, two on 11 February, two on 3 March (originally from Portsmouth Dockyard), two on 12 August and two on 5 October. However the order for two sloops were ordered at Portsmouth was moved to Chatham Dockyard on 21&nbsp;June 1943, and they were laid down there, but were cancelled on 15&nbsp;October 1945.

{| class="wikitable sortable plainrowheaders" style="font-size:97%;"
|+ List of Modified ''Black Swan''-class sloops of the Royal Navy (1941 programme)
|-
! scope="col" | Name
! scope="col" | Pennant
! scope="col" | Builder
! scope="col" | Laid Down
! scope="col" | Launched
! scope="col" | Commissioned
! scope="col" | Fate
|-
! scope="row" | {{HMS|Actaeon|U07|2}}
! scope="row" | U07
|Thornycroft, Woolston
|15&nbsp;May 1944
|25&nbsp;July 1945
|24&nbsp;July 1946
|Transferred to [[West German Navy|West Germany]] as ''Hipper'' 9&nbsp;December 1958. Hulked July 1964, sold for breaking up 25&nbsp;October 1967.
|-
! scope="row" | {{HMS|Amethyst|U16|2}}
! scope="row" | U16
|[[Alexander Stephen and Sons|Alex. Stephen]], [[Linthouse]]
|25&nbsp;March 1942
|7&nbsp;May 1943
|2&nbsp;November 1943
|Broken up 18&nbsp;January 1957.
|-
! scope="row" | {{HMS|Hart|U58|2}}
! scope="row" | U58
|Alex. Stephen, Linthouse
|27&nbsp;March 1942
|7&nbsp;July 1943
|12&nbsp;December 1943
|Transferred to [[West German Navy|West Germany]] as ''Scheer'' 1958. Sold for breaking up 17&nbsp;March 1971.
|-
! scope="row" | {{HMS|Hind|U39|2}}
! scope="row" | U39
|Denny, Dunbarton
|31&nbsp;August 1942
|30&nbsp;September 1943
|11&nbsp;April 1944
|Broken up 10&nbsp;December 1958.
|-
! scope="row" | {{HMS|Mermaid|U30|2}}
! scope="row" | U30
|Denny, Dunbarton
|8&nbsp;September 1942
|11&nbsp;November 1943
|12&nbsp;May 1944
|Transferred to [[West German Navy|West Germany]] as ''Scharnhorst'' 5&nbsp;May 1950. Hulked 1974, and broken up April 1990.
|-
! scope="row" | {{HMS|Alacrity|U60|2}}
! scope="row" | U60
|Denny, Dunbarton
|4&nbsp;May 1943
|1&nbsp;September 1944
|13&nbsp;April 1945
|Broken up 15&nbsp;September 1956.
|-
! scope="row" | {{HMS|Opossum|U33|2}}
! scope="row" | U33
|Denny, Dunbarton
|28&nbsp;July 1943
|30&nbsp;November 1944
|16&nbsp;June 1945
|Broken up 26&nbsp;April 1960.
|-
! scope="row" | {{HMS|Modeste|U42|2}}
! scope="row" | U42
|Chatham Dockyard
|15&nbsp;February 1943
|29&nbsp;January 1944
|3&nbsp;September 1945
|Broken up 11&nbsp;March 1961.
|-
! scope="row" | {{HMS|Nereide|U64|2}}
! scope="row" | U64
|Chatham Dockyard
|15&nbsp;February 1943
|29&nbsp;January 1944
|6&nbsp;May 1946
|Broken up 18&nbsp;May 1958.
|-
! scope="row" | {{HMS|Nonsuch|U54|2}}
! scope="row" | U54
|Portsmouth Dockyard, later moved to Chatham Dockyard
|26&nbsp;February 1945
| rowspan=2 {{n/a}}
| rowspan=2 {{n/a}}
| rowspan=2 | Cancelled 15&nbsp;October 1945.
|-
! scope="row" | {{HMS|Nymphe|U84|2}}
! scope="row" | U84
|Portsmouth Dockyard, later moved to Chatham Dockyard
|26&nbsp;February 1945
|}

Two more sloops were authorised in the 1942 Programme; the names would have been ''Waterhen'' and ''Wryneck'' but they were never ordered in that year's Programme. The 1944 Programme re-instated these two vessels, as well as the twelfth sloop authorised under the 1941 Programme, and now named as ''Partridge''. These three ships were ordered on 9&nbsp;October 1944, but they were all cancelled on 15&nbsp;October 1945. These had been intended to be further modified and enlarged, with a beam of {{Convert|38|ft|6|in}}. Two further ships planned under the 1944 Programme would have been named ''Woodpecker'' (ii) and ''Wild Swan'', but these were never ordered and the intention to build was dropped when the 1945 Programme was compiled.
* {{HMS|Partridge|U37|2}}, ordered from Thornycroft.
* {{HMS|Waterhen|U05|2}}, ordered from Denny.
* {{HMS|Wryneck|U31|2}}, ordered from Denny.