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{{Short description|1942 class of American minesweepers}}
{{Use dmy dates|date=October 2021}}
{|{{Infobox ship begin}}
{{Infobox ship image
| Ship image = [[File:Yms324.png|300px|USS YMS-324 in San Francisco Bay, c. 1945–46]]
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{{Infobox ship class overview
| Name = ''YMS-1''
| Builders = 35 yacht builders<ref name=navsrcYMSidx>{{cite web | first = Gary P. | last = Priolo | url = http://www.navsource.
| Operators = *{{
*{{navy|United Kingdom}}
*{{navy|France}}
*{{navy|Canada|name=Maritime Command}}
*{{navy|Poland}}
*{{navy|Japan}}
*{{navy|South Vietnam}}
| Class before =
| Class after =
| Subclasses = ''YMS-136'', ''YMS-446''
| Cost =
| Built range =
| In service range =
| In commission range = about March 1942<ref name=navsrcYMSidx/> – 13 December 1957<ref name=navsrcYMS327>{{cite web | first = Joseph M. | last = Radigan | url = http://www.navsource.
| Total ships building =
| Total ships planned =
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| Ship draft = {{convert|8|ft|m|abbr=on}}
| Ship power =
| Ship propulsion = *2 × {{convert|
*2 shafts
| Ship speed = {{convert|15|kn|km/h}}
| Ship complement = 32
| Ship armament = *1 × [[3-inch/50-caliber gun|3-inch/50 caliber]] [[gun mount]]
*2 × [[Oerlikon 20 mm cannon|20 mm guns]]
*2 × [[depth charge projector]]s
}}
|}
The '''''YMS-1'' class''' of
==Design==
The design for the class had a displacement of 270 tonnes. The ships had a length of {{convert|136|ft|m}}, a [[Beam (nautical)|beam]] of {{convert|24|ft|6|in|m|abbr=on}}, and a [[Draft (hull)|draft]] of {{convert|8|ft|m|abbr=on}}. The vessels were capable of {{convert|15|kn|lk=in}}, being powered by two {{convert|440|shp|lk=in|abbr=on}} [[General Motors]] (Cleveland)
The ships had a complement of 32. Their armament comprised one single [[3-inch/50-caliber gun|3-inch/50 caliber]] gun mount, two [[Oerlikon 20 mm cannon|20 mm]] [[anti-air warfare|anti-aircraft]] guns and two [[depth charge projector]]s.
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===Other exports===
France received 31 YMS-class minesweepers during World War 2, with one (''D202'', formerly {{USS|YMS-77||2}}) being sunk by a mine in 1944. France kept its YMS-class ships in service after the end of the war,<ref name="massv2 p59,61-3">Masson 1969, pp. 59, 61–53.</ref> with seven remaining in service in 1962, used as training ships in the [[École Navale]] and as experimental vessels. Three ships of the class were transferred from France to [[South Vietnam]] in 1954, while another was transferred to [[Madagascar]] in 1961.<ref name="jfs62 p94">Blackman 1962, p. 94.</ref>
In 1947, Poland acquired former BYMS-2211 (renamed ORP Delfin), BYMS-2257 (renamed ORP Foka), and [[HMS BYMS-2282|BYMS-2282]] (renamed [[ORP Mors]]). <ref>{{cite magazine |last=Twardowski |first=Marek |date=June 2001 |title=Trałowce typu BYMS w polskiej służbie |trans-title=BYMS minesweepers in Polish service |url= |magazine=Morza, Statki i Okręty |language=Polish |___location= |publisher= |publication-date=June 2001 |volume=VI |issue=31 |issn=1426-529X |access-date=}}</ref> The vessels were re-armed with Soviet [[85 mm air defense gun M1939 (52-K)]] and four Soviet [[NSV machine gun|NSV machine guns]]. In the mid-1950s, they were removed from service. The ORP Delfin was scuttled in the Bay of Puck, where it remains a diving attraction.
The [[Japan Maritime Self-Defense Force]] received 8 vessels of this class in the 1950s. The class was named ''Ujishima''-class minesweeper. The ships were:
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*{{ship|RV|Calypso}}, research ship
*{{ship|MV|Uchuck III}}, Merchant vessel, USS YMS-123
== See also==
*[[Wooden boats of World War II]]
*[[List of mine warfare vessels of the United States Navy#Auxiliary Motor Mine Sweepers (YMS)|List of mine warfare vessels of the United States Navy § Auxiliary Motor Mine Sweepers (YMS)]]
== References ==
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*{{cite book|last=Blackman|first=Raymond V. B.|title=Jane's Fighting Ships 1962–63|year=1962|publisher=Sampson Low, Marston & Co. Ltd|___location=London}}
*{{cite book| last=Le Masson|first=Henri |title=Navies of the Second World War: The French Navy Volume Two|year=1969|publisher=Macdonald & Co. |___location=London}}
* {{cite web | first = Gary P. | last = Priolo | url = http://www.navsource.
==External links==
* [https://web.archive.org/web/20011005083318/http://www.history.navy.mil/danfs/#Anchor-Editoria-14954 Dictionary of American Naval Fighting Ships]
* [http://www.navsource.
<!-- Bobbers with Tails is an fictionalized account of life aboard a US Navy YMS in the South Pacific during World War II by Dwight Emrick who served as an Ensign on YMS 313. The book is available on ebay. -->
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