YMS-1-class minesweeper | |
---|---|

USS YMS-324 in San Francisco Bay, c. 1945–46 | |

Class overview | |

Name: |
YMS-1 |

Builders: |
35 yacht builders^{[1]} |

Operators: |
United States Navy Royal Navy Royal Canadian Navy |

Subclasses: |
YMS-136, YMS-446 |

In commission: |
about March 1942^{[1]} - 13 December 1957^{[2]} |

Completed: |
481^{[1]} |

Cancelled: |
YMS-482 – YMS-500 |

Active: | 0 |

Lost: |
32^{[3]} |

General characteristics | |

Type: | Minesweeper |

Displacement: | 270 tons |

Length: | 136 ft (41 m) |

Beam: | 24 ft 6 in (7.47 m) |

Draft: | 8 ft (2.4 m) |

Propulsion: |
2 × 880 bhp (660 kW) General Motors 8-268A diesel engines 2 shafts |

Speed: | 15 knots (28 km/h) |

Complement: | 32 |

Armament: |
1 × 3-inch/50 caliber gun mount 2 × 20 mm guns 2 × depth charge projectors |

The ** YMS-1 class** of

**auxiliary motor minesweepers**was established with the laying down of

*YMS-1*on 4 March 1941. Some were later transferred to the United Kingdom as part of the Second World War Lend-Lease pact between the two nations. One ship, eventually made its way into the Royal Canadian Navy postwar.

## Design

The design for the class had a displacement of 270 tonnes. The ships had a length of 136 feet (41 m) a beam of 24 ft 6 in (7.47 m), and a draft of 8 ft (2.4 m). The vessels were capable of 15 knots (28 km/h; 17 mph) , being powered by two 440 shp (330 kW) General Motors (Cleveland) 8-268A, 2-cycle diesel engines which drove two shafts.

The ships had a complement of 32. Their armament comprised one single 3-inch/50 caliber gun mount, two 20 mm anti-aircraft guns and two depth charge projectors.

## Subclasses

There were two mostly cosmetic sub-types of the class, sometimes referred to as classes themselves

*YMS-135* subclass

This subclass was identical but had only one stack rather than two, and consisted of *YMS-135*–*YMS-445*, *YMS-480*, and *YMS-481*.

*YMS-446* subclass

This subclass was also identical but had no stacks, and comprised *YMS 446*–*YMS 479*.

### BYMS

Eighty vessels of the class were ordered from US yards for transfer under Lend-Lease to the United Kingdom as the BYMS-class minesweeper. Another 53 built for the US Navy (hull numbers 137 to 284) were transferred as further BYMS and another 17 were delivered later.

## Examples

- USS Barbet (AMS-41)(YMS-45)
- USS YMS-61
- USS Albatross (AMS-1)(YMS-80)
- USS Brambling (AMS-42)(YMS-109)
- USS Brant (AMS-43)(YMS-113)
- USS Crossbill (AMS-45)(YMS-120)
- USS Bobolink (AMS-2)(YMS-164)
- USS Cardinal (AMS-4)(YMS-179)
- S Fulmar (AMS-47)(YMS-193)
- USS Courser (AMS-6)(YMS-201)
- HMS BYMS-2203 (J1003)(YMS-203)
- USS Crow (AMS-7)(YMS-215)
- USS Curlew (AMS-8) (YMS-218)
- USS Flicker (AMS-9)(YMS-219)
- USS Firecrest (AMS-10)(YMS-231)
- USS Flamingo (AMS-11)(YMS-238)
- USS Harkness (AMCU-12)(YMS-242)
- USS James M. Gilliss (AMCU-13)(YMS-262)
- USS Lapwing (AMS-48)(YMS-268)
- USS Lorikeet (AMS-49)(YMS-271)
- HMS BYMS-2282 (YMS-282)
- USS Reedbird (AMS-51)(YMS-291)
- USS Rhea (AMS-52)(YMS-299)
- USS Robin (AMS-53)(YMS-311)
- USS Grackle (AMS-13)(YMS-312)
- USS Grouse (AMS-15) (YMS-321)
- USS Plover (AMS-33)(YMS-442)
- USS Redhead (AMS-34)(YMS-443)
- USS Hawk (AMS-17)(YMS-362)
- USS Hornbill (AMS-19)(YMS-371)
- USS Hummer (AMS-20)(YMS-372)
- USS Jackdaw (AMS-21)(YMS-373)
- USS Kite (AMS-22)(YMS-374)
- USS Lark (AMS-23)(YMS-376)
- USS YMS-386
- USS Seagull (AMS-55)(YMS-402)
- USS Chatterer (AMS-40)(YMS-415)
- USS YMS-418
- USS Mockingbird (AMS-27)(YMS-419)
- USS Siskin (AMS-58) (YMS-425)
- USS Ostrich (AMS-29)(YMS-430)
- USS Parrakeet (AMS-30)(YMS-434)
- USS Partridge (AMS-31)(YMS-437)
- USS Pelican (AMS-32)(YMS-441)
- USS Turkey (AMS-56)(YMS-444)
- USS Sanderling (AMCU-49)(YMS-446)
- USS McMinnville (PCS-1401)(YMS-452)
- USS Swan (AMS-37)(YMS-470)
- USS Verdin (YMS-471)
- USS Waxbill (MHC-50)(YMS-479)
- USS Swallow (AMS-36)(YMS-1416)

### Survivors

- USS
*YMS-328*, yacht

- RV
*Calypso*, research ship

- MV
*Uchuck III*, Merchant vessel, USS YMS-123

## References

- ↑ For both
*YMS-1*and BYMS classes a total 40 were lost. Of those 40, 32 were*YMS-1*class. (See: "YMS class Minesweepers".*Uboat.net*. http://uboat.net/allies/warships/class.html?ID=477. Retrieved 2007-12-20.)

*This article incorporates text from the public domain*Dictionary of American Naval Fighting Ships*.*- Priolo, Gary P. (2006). "Auxiliary Motor Minesweeper (YMS), British Motor Minesweeper (BYMS) Index".
*NavSource Online*. NavSource Naval History. http://www.navsource.org/archives/11/19idx.htm. Retrieved 2007-12-19.

## External links

- Dictionary of American Naval Fighting Ships
- NavSource Online: Mine Warfare Vessel Photo Archive - YMS-1

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