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fighting ships of the world

UNITED STATES NAVY (UNITED STATES OF AMERICA)

MINE WARFARE SHIPS

"YMS" minesweepers (1942-1945)

YMS135 1944

Brant 1955

Flamingo 1955

Swan 1955

No Name Yard No Builder Laid down Launched Comm Fate
YMS1     Henry B. Nevins, New York 3/1941 10.1.1942 3.1942 stricken 4.1946
YMS2     Henry B. Nevins, New York 3.1941 28.1.1942 4.1942 stricken 2.1947
YMS3     Henry B. Nevins, New York 3.1941 13.4.1942 4.1942 to France 10.1944 (D334)
YMS4     Henry B. Nevins, New York 8.1941 14.3.1942 5.1942 stricken 6.1946
YMS5     Henry B. Nevins, New York 8.1941 13.4.1942 4.1942 stricken 4.1946
YMS6     Henry B. Nevins, New York 8.1941 19.5.1942 6.1942 stricken 6.1946
YMS7     Henry B. Nevins, New York 10.1941 11.5.1942 6.1942 stricken 6.1947
YMS8     Henry B. Nevins, New York 1.1942 2.6.1942 6.1942 stricken 6.1946
YMS9     Henry B. Nevins, New York 2.1942 15.6.1942 7.1942 stricken 6.1946
YMS10     Henry B. Nevins, New York 3.1942 30.6.1942 7.1942 stricken 6.1946
YMS11     Henry B. Nevins, New York 4.1942 20.7.1942 8.1942 stricken 6.1946
YMS12     Rice Bros, E. Boothbay 4.1941 14.3.1942 7.1942 stricken 4.1946
YMS13     Rice Bros, E. Boothbay 4.1941 2.5.1942 8.1942 to France 10.1944 (D317)
YMS14     Rice Bros, E. Boothbay 7.1941 13.6.1942 10.1942 collision 11.1.1945
YMS15     Rice Bros, E. Boothbay 7.1941 16.7.1942 12.1942 to France 10.1944 (D338)
YMS16     Rice Bros, E. Boothbay 3.1942 7.9.1942 2.1943 to France 10.1944 (D322)
YMS17     Rice Bros, E. Boothbay 5.1942 24.10.1942 4.1943 stricken 6.1946
YMS18     Herreshoff, Bristol 6.1941 8.12.1941 5.1942 to France 10.1944 (D332)
YMS19     Herreshoff, Bristol 6.1941 27.12.1941 6.1942 sunk 24.9.1944
YMS20     Greenport Basin 6.1941 1.11.1941 4.1942 to France 10.1944 (D327)
YMS21     Greenport Basin 6.1941 25.11.1941 4.1942 sunk 1.9.1944
YMS22     Greenport Basin 7.1941 31.12.1941 5.1942 stricken 7.1946
YMS23     Greenport Basin 7.1941 13.12.1941 5.1942 to France 3.1944 (D201)
YMS24     Greenport Basin 11.1941 10.1.1942 5.1942 sunk 16.8.1944
YMS25     Greenport Basin 11.1941 28.1.1942 6.1942 stricken 7.1947, to Peru (Bondy)
YMS26     Greenport Basin 12.1941 28.2.1942 6.1942 to France 3.1944 (D211)
YMS27     Greenport Basin 12.1941 7.3.1942 6.1942 to France 10.1944 (D333)
YMS28     Greenport Basin 1.1942 31.3.1942 7.1942 to France 10.1944 (D315)
YMS29     Greenport Basin 1.1942 11.4.1942 7.1942 to France 10.1944 (D335)
YMS30     Greenport Basin 1942 1942 8.1942 sunk 25.1.1944
YMS31     Greenport Basin 3.1942 23.5.1942 8.1942 to France 3.1944 (D212)
YMS32     Hiltebrant, Kingston 5.1941 1.10.1941 5.1942 stricken 6.1946
YMS33     Hiltebrant, Kingston 5.1941 8.10.1941 6.1942 to Soviet Union 8.1945 (T-603)
YMS34     Hiltebrant, Kingston 5.1941 21.10.1941 6.1942 to France 10.1944 (D311)
YMS35     Hiltebrant, Kingston 5.1941 7.11.1941 7.1942 stricken 7.1947, to Peru (San Martín)
YMS36     Hiltebrant, Kingston 10.1941 21.1.1942 7.1942 to France 10.1944 (D321)
YMS37     Hiltebrant, Kingston 10.1941 28.1.1942 8.1942 to France 10.1944 (D316)
YMS38, 8.1945- YMS(C)38     Hiltebrant, Kingston 5.1941 24.1.1942 4.1942 to Soviet Union 7.1945 (T-593)
YMS39     Robert Jacob, New York 5.1941 23.12.1941 3.1942 sunk 26.6.1945
YMS40     Robert Jacob, New York 6.1941 14.3.1942 4.1942 stricken 5.1946
YMS41     Robert Jacob, New York 6.1941 14.4.1942 5.1942 stricken 6.1946
YMS42     Wheeler, Brooklyn 6.1941 17.3.1942 4.1942 to Soviet Union 7.1945 (T-592)
YMS43     Wheeler, Brooklyn 6.1941 30.3.1942 5.1942 to France 10.1944 (D324)
YMS44     Wheeler, Brooklyn 6.1941 10.4.1942 5.1942 stricken 6.1946
YMS45, 9.1947- AMS41, 2.1955- MSC(O)41 9.1947- Barbet   Wheeler, Brooklyn 6.1941 20.4.1942 6.1942 stricken 1957?
YMS46     Wheeler, Brooklyn 6.1941 30.4.1942 6.1942 stricken 6.1947
YMS47     Wheeler, Brooklyn 6.1941 7.5.1942 7.1942 stricken 10.1945
YMS48     Wheeler, Brooklyn 6.1941 15.5.1942 7.1942 sunk 14.2.1945
YMS49     Wheeler, Brooklyn 6.1941 22.5.1942 7.1942 stricken 7.1946
YMS50     Wheeler, Brooklyn 7.1941 6.6.1942 8.1942 sunk 18.6.1945
YMS51     Wheeler, Brooklyn 7.1941 22.6.1942 8.1942 stricken 6.1947
YMS52     Wheeler, Brooklyn 8.1941 15.6.1942 8.1942 stricken 6.1946
YMS53     Wheeler, Brooklyn 8.1941 24.7.1942 8.1942 stricken 7.1946
YMS54     Gibbs Gas Engine, Jacksonville 5.1941 1.11.1941 2.1942 stricken 6.1946
YMS55     Gibbs Gas Engine, Jacksonville 5.1941 22.11.1941 3.1942 to France 9.1944 (D331)
YMS56     Gibbs Gas Engine, Jacksonville 5.1941 6.12.1941 3.1942 stricken 1946
YMS57     Gibbs Gas Engine, Jacksonville 6.1941 15.12.1941 3.1942 stricken 6.1946
YMS58     Gibbs Gas Engine, Jacksonville 6.1941 22.12.1941 4.1942 to France 10.1944 (D313)
YMS59     Gibbs Gas Engine, Jacksonville 7.1941 30.12.1941 4.1942 to Soviet Union 6.1945 (T-521)
YMS60     Gibbs Gas Engine, Jacksonville 9.1941 19.1.1942 5.1942 stricken 6.1947
YMS61     Gibbs Gas Engine, Jacksonville 9.1941 3.2.1942 6.1942 stricken 6.1946
YMS62     Gibbs Gas Engine, Jacksonville 11.1941 25.2.1942 5.1942 to France 10.1944 (D323)
YMS63     Gibbs Gas Engine, Jacksonville 11.1941 6.3.1942 6.1942 to France10/1944 (D312)
YMS64     Gibbs Gas Engine, Jacksonville 1.1942 25.3.1942 6.1942 to France 10.1944 (D336)
YMS65     Gibbs Gas Engine, Jacksonville 1.1942 30.3.1942 7.1942 stricken 6.1947
YMS66     Weaver, Orange 7.1941 30.9.1941 6.1942 stricken 5.1946
YMS67     Weaver, Orange 7.1941 17.2.1942 7.1942 stricken 7.1946
YMS68     Weaver, Orange 7.1941 24.2.1942 8.1942 stricken 7.1946
YMS69     Weaver, Orange 7.1941 5.3.1942 8.1942 to France 9.1944 (D337)
YMS70     Weaver, Orange 7.1941 12.3.1942 9.1942 wrecked 17.10.1944
YMS71     Weaver, Orange 7.1941 26.3.1942 9.1942 sunk 3.4.1945
YMS72     Weaver, Orange 7.1941 9.4.1942 1.1943 stricken 3.1946
YMS73     Weaver, Orange 7.1941 23.4.1942 1.1943 stricken 6.1947
YMS74     Weaver, Orange 7.1941 30.4.1942 2.1943 stricken 6.1946
YMS75     Weaver, Orange 7.1941 26.5.1942 2.1943 to Soviet Union 7.1945 (T-590)
YMS76     Stadium, Cleveland 4.1941 8.11.1941 6.1942 stricken 5.1946
YMS77     Stadium, Cleveland 5.1941 11.10.1941 5.1942 to France 3.1944 (D202)
YMS78     Stadium, Cleveland 5.1941 11.12.1941 6.1942 to France 10.1944 (D318)
YMS79     Stadium, Cleveland 6.1941 27.12.1941 6.1942 stricken 2.1948, to Turkey (Kas)
YMS80, 2.1947- AMS1, 2.1955- EAMS1, 2.1955- EMSC(O)1 2.1947- Albatross   Stadium, Cleveland 6.1941 5.5.1942 7.1942 experimental minesweeper 2.1955, stricken 3.1958
YMS81     Stadium, Cleveland 7.1941 30.5.1942 7.1942 stricken 6.1947
YMS82     Stadium, Cleveland 10.1941 13.6.1942 8.1942 to France 10.1944 (D325)
YMS83     Stadium, Cleveland 10.1941 27.6.1942 8.1942 to France 10.1944 (D326)
YMS84     Henry C. Grebe, Chicago 6.1941 3.3.1942 5.1942 sunk 9.7.1945
YMS85     Henry C. Grebe, Chicago 6.1941 19.3.1942 6.1942 to Soviet Union 8.1945 (T-604)
YMS86     Al Larson, Terminal I 6.1941 31.1.1942 5.1942 stricken 4.1946
YMS87     Al Larson, Terminal I 7.1941 31.3.1942 8.1942 stricken 4.1946
YMS88     South Coast, Newport Beach 6.1941 18.10.1941 5.1942 to Soviet Union 8.1945 (T-608)
YMS89     South Coast, Newport Beach 7.1941 22.11.1941 6.1942 stricken 5.1946
YMS90     South Coast, Newport Beach 7.1941 19.12.1941 7.1942 wrecked 9.10.1945, never repaired
YMS91     South Coast, Newport Beach 10.1941 7.3.1942 8.1942 sold 1948
YMS92     South Coast, Newport Beach 11.1941 14.5.1942 9.1942 stricken 10.1945
YMS93     South Coast, Newport Beach 12.1941 16.5.1942 10.1942 sold 2.1947
YMS94     Colberg, Stockton 6.1941 15.12.1941 3.1942 stricken 6.1947
YMS95     Colberg, Stockton 6.1941 16.12.1941 3.1942 stricken 6.1946
YMS96     Colberg, Stockton 6.1941 20.2.1942 4.1942 stricken 1.1946
YMS97     Colberg, Stockton 6.1941 16.2.1942 4.1942 stricken 2.1947
YMS98     Colberg, Stockton 6.1941 31.12.1941 4.1942 wrecked 16.9.1945
YMS99     Colberg, Stockton 6.1941 11.3.1942 4.1942 stricken 1.1946
YMS100     Astoria Marine 7.1941 12.4.1942 6.1942 to Soviet Union 8.1945 (T-602)
YMS101     Astoria Marine 7.1941 20.6.1942 7.1942 stricken 6.1946
YMS102     Astoria Marine 6.1941 1.8.1942 8.1942 stricken 6.1947
YMS103     Astoria Marine 7.1941 29.8.1942 9.1942 sunk 8.4.1945
YMS104     Frank L. Sample, Boothbay Harbor 5.1941 17.2.1942 5.1942 stricken 7.1946
YMS105     Frank L. Sample, Boothbay Harbor 5.1941 10.3.1942 7.1942 stricken 5.1946
YMS106     Frank L. Sample, Boothbay Harbor 5.1941 19.4.1942 8.1942 stricken 6.1947
YMS107     Burger, Manitowoc 5.1941 28.3.1942 8.1942 stricken 4.1946
YMS108     Burger, Manitowoc 5.1941 18.4.1942 8.1942 stricken 7.1946
YMS109, 9.1947- AMS42, 2.1955- MSC(O)42 9.1947- Brambling   Burger, Manitowoc 5.1941 16.5.1942 9.1942 stricken 11.1959
YMS110     Burger, Manitowoc 8.1941 16.7.1942 10.1942 stricken 4.1946
YMS111     Burger, Manitowoc 8.1941 25.7.1942 10.1942 stricken 4.1946
YMS112     Burger, Manitowoc 8.1941 5.8.1942 11.1942 stricken 7.1946
YMS113, 9.1947- AMS43, 2.1955- MSC(O)43 9.1947- Brant   San Diego Marine 6.1941 13.2.1942 8.1942 stricken 11.1959
YMS114, 9.1947- AMS44, 2.1955- MSC(O)44 9.1947 - Courlan   San Diego Marine 6.1941 13.3.1942 8.1942 stricken 11.1959
YMS115     San Diego Marine 6.1941 3.4.1942 9.1942 stricken 7.1946
YMS116     San Diego Marine 6.1941 20.4.1942 10.1942 stricken 8.1946
YMS117     Harbor Boat, Terminal I 5.1941 23.8.1942 4.1942 stricken 6.1947
YMS118     Harbor Boat, Terminal I 5.1941 27.10.1941 5.1942 stricken 4.1946
YMS119     Harbor Boat, Terminal I 7.1941 2.3.1942 6.1942 stricken 6.1947
YMS120, 9.1947- AMS45, 2.1955- MSC(O)45 9.1947- Crossbill   Harbor Boat, Terminal I 8.1941 4.4.1942 8.1942 stricken 11.1959
YMS121     Kruse & Banks, North Bend 5.1941 14.3.1942 7.1942 stricken 7.1946
YMS122     Kruse & Banks, North Bend 5.1941 2.6.1942 9.1942 stricken 4.1946
YMS123     Kruse & Banks, North Bend 7.1941 14.3.1942 8.1942 stricken 4.1946
YMS124     Kruse & Banks, North Bend 12.1941 6.6.1942 10.1942 stricken 4.1946
YMS125     J. M. Martinac, Tacoma 1941 18.12.1941 7.1942 stricken 1946
YMS126     J. M. Martinac, Tacoma 7.1941 3.3.1942 9.1942 stricken 4.1946
YMS127     J. M. Martinac, Tacoma 10.1941 2.5.1942 10.1942 wrecked, CTL 10.1.1944
YMS128     J. M. Martinac, Tacoma 12.1941 27.6.1942 12.1942 stricken 4.1946
YMS129     Tacoma Boat 5.1941 18.12.1941 7.1942 stricken 5.1946
YMS130     Tacoma Boat 6.1941 18.12.1941 8.1942 stricken 4.1946
YMS131     Tacoma Boat 7.1941 4.3.1942 10.1942 stricken 4.1946
YMS132     Tacoma Boat 7.1941 2.5.1942 11.1942 stricken 4.1946
YMS133     Western, Tacoma 7.1941 18.12.1941 7.1942 wrecked 21.2.1943
YMS134     Western, Tacoma 8.1941 16.3.1942 9.1942 stricken 4.1946
YMS135     Astoria Marine 5.1942 26.12.1942 2.1943 to Soviet Union 9.1945 (T-606)
YMS136, 9.1947- AMS46, 2.1955- MSC(O)46 9.1947- Egret   Astoria Marine 7.1942 8.2.1943 3.1943 stricken 11.1959, to Brazil (Jutaí)
YMS137     Astoria Marine 8.1942 19.3.1943 4.1943 // --- to United Kingdom before commission 4.1943 (BYMS137)
YMS138     Astoria Marine 8.1942 17.4.1943 6.1943 stricken 6.1946, to Thailand (บางแก้ว [Bangkeo])
YMS139     Astoria Marine 1.1943 19.5.1943 6.1943 to Soviet Union 7.1945 (T-594)
YMS140     Astoria Marine 2.1943 19.6.1943 8.1943 stricken 6.1947
YMS141     Astoria Marine 3.1943 19.7.1943 8.1943 // --- to United Kingdom 8.1943 (BYMS141)
YMS142     Astoria Marine 4.1943 16.8.1943 --- // 9.1943 to United Kingdom 9.1943 (BYMS142)
YMS143     San Diego Marine 4.1942 30.6.1942 2.1943 to Soviet Union 5.1945 (T-522)
YMS144     San Diego Marine 4.1942 30.7.1942 3.1943 to Soviet Union 5.1945 (T-523)
YMS145     San Diego Marine 5.1942 7.9.1942 4.1943 to Soviet Union 5.1945 (T-524)
YMS146     San Diego Marine 6.1942 30.9.1942 6.1943 wrecked 9.10.1945
YMS147     Western, Tacoma 5.1942 24.10.1942 2.1943 stricken 2.1947
YMS148     Western, Tacoma 6.1942 29.11.1942 --- // 5.1943 to United Kingdom 5.1943 (BYMS148)
YMS149     Western, Tacoma 10.1942 4.4.1943 --- // 8.1943 to United Kingdom 8.1943 (BYMS149)
YMS150     Western, Tacoma 12.1942 5.4.1943 --- // 8.1943 to United Kingdom 8.1943 (BYMS150)
YMS151     Campbell, San Diego 6.1942 31.3.1943 10.1943 wrecked 9.10.1945
YMS152     Campbell, San Diego 8.1942 17.4.1943 --- // 11.1943 to United Kingdom 11.1943 (BYMS152)
YMS153     Campbell, San Diego 8.1942 31.7.1943 --- // 11.1943 to United Kingdom 11.1943 (BYMS153)
YMS154     Campbell, San Diego 8.1942 4.9.1943 --- // 1.1944 to United Kingdom 1.1944 (BYMS154)
YMS155     Burger, Manitowoc 6.1942 27.10.1942 --- // 2.1943 to United Kingdom 2.1943 (BYMS155)
YMS156     Burger, Manitowoc 6.1942 12.11.1942 --- // 3.1943 to United Kingdom 3.1943 (BYMS156)
YMS157     Burger, Manitowoc 7.1942 1.12.1942 --- // 4.1943 to United Kingdom 4.1943 (BYMS157)
YMS158     Burger, Manitowoc 8.1942 26.12.1942 5.1943 stricken 6.1946
YMS159     Burger, Manitowoc 8.1942 16.1.1943 6.1943 stricken 8.1946
YMS160     Burger, Manitowoc 8.1942 30.1.1943 7.1943 to Philippines 5.1945
YMS161     Burger, Manitowoc 12.1942 3.4.1943 --- // 7.1943 to United Kingdom 7.1943 (BYMS161)
YMS162     Burger, Manitowoc 12.1942 24.4.1943 --- // 8.1943 to United Kingdom 8.1943 (BYMS162)
YMS163     Dachel-Carter, Benton Harbor 4.1942 27.10.1942 3.1943 stricken 2.1947
YMS164, 2.1947- AMS2, 2.1955- MHC44 2.1947- Bobolink   Dachel-Carter, Benton Harbor 4.1942 28.11.1942 3.1943 minehunter 9.1955, stricken 1.1960
YMS165     Dachel-Carter, Benton Harbor 5.1942 16.1.1943 4.1943 stricken 2.1947
YMS166     Dachel-Carter, Benton Harbor 5.1942 30.1.1943 5.1943 stricken 7.1946
YMS167     Dachel-Carter, Benton Harbor 8.1942 12.6.1943 7.1943 // --- to United Kingdom before commission 7.1943 (BYMS167)
YMS168     Dachel-Carter, Benton Harbor 9.1942 4.7.1943 8.1943 // --- to United Kingdom before commission 8.1943 (BYMS168)
YMS169     Dachel-Carter, Benton Harbor 9.1942 24.4.1943 6.1943 to France 8.1944 (D301)
YMS170, 2.1947- AMS3, 2.1955- MHC45 2.1947- Bunting   Dachel-Carter, Benton Harbor 9.1942 29.5.1943 7.1943 minehunter 8.1955, stricken 6.1960
YMS171     Henry C. Grebe, Chicago 5.1942 21.11.1942 3.1943 // --- to United Kingdom before commission 3.1943 (BYMS171)
YMS172     Henry C. Grebe, Chicago 5.1942 26.11.1942 4.1943 // --- to United Kingdom before commission 4.1943 (BYMS172)
YMS173     Henry C. Grebe, Chicago 5.1942 7.12.1942 5.1943 // --- to United Kingdom before commission 5.1943 (BYMS173)
YMS174     Henry C. Grebe, Chicago 6.1942 19.12.1942 5.1943 // --- to United Kingdom before commission 5.1943 (BYMS174)
YMS175     Henry C. Grebe, Chicago 6.1942 9.1.1943 6.1943 // --- to United Kingdom before commission 6.1943 (BYMS175)
YMS176, 8.1945- YMS(C)176     Henry C. Grebe, Chicago 7.1942 23.1.1943 7.1943 stricken 9.1946
YMS177     Henry C. Grebe, Chicago 9.1942 20.3.1943 7.1943 stricken 9.1946
YMS178     Henry C. Grebe, Chicago 9.1942 24.4.1943 7.1943 to Soviet Union 7.1945 (T-588)
YMS179, 2.1947- AMS4, 2.1955- MSC(O)4 2.1947- Cardinal   Henry C. Grebe, Chicago 10.1942 8.5.1943 7.1943 stricken 11.1959, to Brazil (Javarí)
YMS180     Henry C. Grebe, Chicago 10.1942 5.6.1943 8.1943 to Soviet Union 8.1945 (T-609)
YMS181     Henry C. Grebe, Chicago 1.1943 24.6.1943 9.1943 // --- to United Kingdom before commission 9.1943 (BYMS181)
YMS182     Henry C. Grebe, Chicago 1.1943 15.7.1943 9.1943 // --- to United Kingdom before commission 9.1943 (BYMS182)
YMS183     Greenport Basin 3.1942 25.6.1942 1.1943 stricken 6.1947
YMS184     Greenport Basin 5.1942 18.7.1942 1.1943 to Soviet Union 7.1945 (T-595)
YMS185     Greenport Basin 5.1942 8.8.1942 2.1943 // --- to United Kingdom before commission 2.1943 (BYMS185)
YMS186     Greenport Basin 5.1942 22.8.1942 2.1943 // --- to United Kingdom before commission 2.1943 (BYMS186)
YMS187     Greenport Basin 6.1942 7.9.1942 3.1943 // --- to United Kingdom before commission 3.1943 (BYMS187)
YMS188     Greenport Basin 7.1942 26.9.1942 3.1943 // --- to United Kingdom before commission 3.1943 (BYMS188)
YMS189     Greenport Basin 8.1942 14.10.1942 5.1943 // --- to United Kingdom before commission 5.1943 (BYMS189)
YMS190     Greenport Basin 8.1942 31.10.1942 5.1943 // --- to United Kingdom before commission 5.1943 (BYMS190)
YMS191     Greenport Basin 9.1942 14.11.1942 6.1943 // --- to United Kingdom before commission 6.1943 (BYMS191)
YMS192, 2.1947- AMS5, 2.1955- MSC(O)5 2.1947- Condor   Greenport Basin 9.1942 5.12.1942 6.1943 to Japan 3.1955 (うじしま [Ujishima])
YMS193, 9.1947- AMS47, 2.1955- MSC(O)47 9.1947- Fulmar   Greenport Basin 10.1942 2.1.1943 6.1943 stricken 10.1968
YMS194     Greenport Basin 11.1942 30.1.1943 7.1943 // --- to United Kingdom before commission 7.1943 (BYMS2194)
YMS195     Hiltebrant, Kingston 4.1942 10.8.1942 3.1943 survey vessel AGS11 Chauvenet 3.1945
YMS196     Hiltebrant, Kingston 4.1942 14.8.1942 4.1943 to Philippines 5.1946
YMS197     Hiltebrant, Kingston 4.1942 24.8.1942 5.1943 to United Kingdom 6.1943 (BYMS197)
YMS198     Hiltebrant, Kingston 5.1942 7.9.1942 5.1943 stricken 8.1946
YMS199     Hiltebrant, Kingston 8.1942 10.10.1942 6.1943 stricken 2.1947
YMS200     Hiltebrant, Kingston 8.1942 26.10.1942 7.1943 stricken 6.1946
YMS201, 2.1947- AMS6, 2.1955- MSC(O)6 2.1947- Courser   Hiltebrant, Kingston 8.1942 19.11.1942 7.1943 stricken 11.1959
YMS202     Hiltebrant, Kingston 9.1942 9.12.1942 8.1943 // --- to United Kingdom before commission 8.1943 (BYMS202)
YMS203     Hiltebrant, Kingston 10.1942 15.1.1943 8.1943 // --- to United Kingdom before commission 8.1943 (BYMS203)
YMS204     Hiltebrant, Kingston 11.1942 2.3.1943 9.1943 // --- to United Kingdom before commission 9.1943 (BYMS204)
YMS205     Hiltebrant, Kingston 11.1942 31.3.1943 9.1943 // --- to United Kingdom before commission 9.1943 (BYMS205)
YMS206     Hiltebrant, Kingston 12.1942 29.4.1943 10.1943 // --- to United Kingdom before commission 10.1943 (BYMS206)
YMS207     Robert Jacob, New York 4.1942 1.8.1942 1.1943 to United Kingdom 3.1943 (BYMS207)
YMS208     Robert Jacob, New York 4.1942 8.8.1942 2.1943 to United Kingdom 3.1943 (BYMS208)
YMS209     Robert Jacob, New York 4.1942 15.8.1942 3.1943 // --- to United Kingdom before commission 3.1943 (BYMS209)
YMS210     Robert Jacob, New York 5.1942 7.9.1942 4.1943 // --- to United Kingdom before commission 4.1943 (BYMS210)
YMS211     Robert Jacob, New York 5.1942 10.10.1942 5.1943 // --- to United Kingdom before commission 5.1943 (BYMS211)
YMS212     Robert Jacob, New York 5.1942 16.10.1942 5.1943 // --- to United Kingdom before commission 5.1943 (BYMS212)
YMS213     Robert Jacob, New York 6.1942 13.11.1942 6.1943 // --- to United Kingdom before commission 6.1943 (BYMS213)
YMS214     Robert Jacob, New York 8.1942 26.2.1943 7.1943 // --- to United Kingdom before commission 7.1943 (BYMS214)
YMS215, 2.1947- AMS7, 2.1955- MSC(O)7 2.1947- Crow   Robert Jacob, New York 8.1942 22.2.1943 7.1943 stricken 11.1959
YMS216     J. M. Martinac, Tacoma 6.1942 17.10.1942 2.1943 to Soviet Union 7.1945 (T-596)
YMS217     J. M. Martinac, Tacoma 6.1942 21.11.1942 4.1943 // --- to United Kingdom before commission 4.1943 (BYMS217)
YMS218, 2.1947- AMS8, 2.1955- MSC(O)8 2.1947- Curlew   J. M. Martinac, Tacoma 7.1942 23.12.1942 6.1943 to South Korea 1.1956 (금화 [Geumhwa])
YMS219, 2.1947- AMS9, 2.1955- MSC(O)9 2.1947- Flicker   J. M. Martinac, Tacoma 10.1942 23.1.1943 7.1943 stricken 1.1960
YMS220     J. M. Martinac, Tacoma 11.1942 6.3.1943 8.1943 stricken 6.1946
YMS221     J. M. Martinac, Tacoma 12.1942 22.4.1943 9.1943 // --- to United Kingdom before commission 9.1943 (BYMS221)
YMS222     Mojean & Ericson, Tacoma 5.1942 11.11.1942 4.1943 stricken 5.1946
YMS223     Mojean & Ericson, Tacoma 61942 27.12.1942 4.1943 // --- to United Kingdom before commission 4.1943 (BYMS223)
YMS224     Mojean & Ericson, Tacoma 11.1942 28.2.1943 8.1943 stricken 6.1946
YMS225     Mojean & Ericson, Tacoma 1.1943 25.4.1943 10.1943 // --- to United Kingdom  before commission 10.1943 (BYMS225)
YMS226     Frank L. Sample, Boothbay Harbor 3.1942 31.8.1942 1.1943 to United Kingdom 3.1943 (BYMS226)
YMS227     Frank L. Sample, Boothbay Harbor 4.1942 7.9.1942 3.1943 to France 3.1944 (D273)
YMS228     Frank L. Sample, Boothbay Harbor 4.1942 2.10.1942 5.1943 to Turkey 2.1948 (Kemer)
YMS229     Frank L. Sample, Boothbay Harbor 9.1942 11.1.1943 6.1943 // --- to United Kingdom before commission 6.1943 (BYMS229)
YMS230     Frank L. Sample, Boothbay Harbor 9.1942 20.2.1943 7.1943 // --- to United Kingdom before commission 7.1943 (BYMS230)
YMS231, 2.1947- AMS10, 2.1955- MSC(O)10 2.1947- Firecrest   Frank L. Sample, Boothbay Harbor 10.1942 3.4.1943 8.1943 to Japan 3.1955 (えたじま [Etajima])
YMS232     Frank L. Sample, Boothbay Harbor 1.1943 26.4.1943 9.1943 // --- to United Kingdom before commission 9.1943 (BYMS232)
YMS233     Frank L. Sample, Boothbay Harbor 2.1943 22.7.1943 10.1943 // --- to United Kingdom before commission 10.1943 (BYMS233)
YMS234     Frank L. Sample, Boothbay Harbor 4.1943 4.9.1943 11.1943 // --- to United Kingdom before commission 11.1943 (BYMS234)
YMS235     Stadium, Cleveland 7.1942 15.2.1943 7.1943 stricken 8.1946
YMS236     Stadium, Cleveland 7.1942 16.1.1943 6.1943 // --- to United Kingdom before commission 6.1943 (BYMS236)
YMS237     Stadium, Cleveland 6.1942 7.9.1942 11.1942 to Soviet Union 7.1945 (T-589)
YMS238, 2.1947- AMS11, 2.1955- MSC(O)11 2.1947- Flamingo   Stadium, Cleveland 5.1942 12.9.1942 11.1942 stricken 11.1959
YMS239     Stadium, Cleveland 5.1942 27.10.1942 4.1943 to Turkey 2.1948 (Kerempe)
YMS240     Stadium, Cleveland 4.1942 31.10.1942 5.1943 // --- to United Kingdom before commission 5.1943 (BYMS240)
YMS241     Tacoma Boat 5.1942 7.9.1942 2.1943 to Soviet Union 7.1945 (T-591)
YMS242, 8.1951- AMCU12, 2.1955- MHC12 8.1951- Harkness   Tacoma Boat 6.1942 10.10.1942 3.1943 survey vessel AGS12 Harkness 3.1945-8/1951, stricken 11.1959
YMS243     Tacoma Boat 6.1942 10.11.1942 5.1943 stricken 1.1946
YMS244     Tacoma Boat 10.192 18.12.1942 7.1943 // --- to United Kingdom before commission 7.1943 (BYMS244)
YMS245     Tacoma Boat 10.1942 6.2.1943 7.1943 stricken 6.1946, to South Korea (강화 [Gangwha])
YMS246     Tacoma Boat 11.1942 11.3.1943 8.1943// --- to United Kingdom before commission 8.1943 (BYMS246)
YMS247     Weaver, Orange 5.1942 14.10.1942 5.1943 to Norway 5.1945 (NYMS247)
YMS248     Weaver, Orange 5.1942 14.10.1942 6.1943 stricken 6.1946
YMS249     Weaver, Orange 5.1942 24.10.1942 6.1943 stricken 7.1946
YMS250     Weaver, Orange 5.1942 9.12.1942 7.1943 stricken 6.1947
YMS251     Weaver, Orange 5.1942 24.12.1942 8.1943 stricken 7.1946
YMS252     Weaver, Orange 5.1942 24.6.1943 9.1943 // --- to United Kingdom before commission 9.1943 (BYMS252)
YMS253     Weaver, Orange 5.1942 3.7.1943 10.1943 // --- to United Kingdom before commission 10.1943 (BYMS253)
YMS254     Weaver, Orange 5.1942 31.1.1943 11.1943 // --- to United Kingdom before commission 11.1943 (BYMS254)
YMS255     Weaver, Orange 5.1942 22.5.1943 11.1943 // --- to United Kingdom before commission 11.1943 (BYMS255)
YMS256     Weaver, Orange 6.1942 2.8.1943 12.1943 // --- to United Kingdom before commission 12.1943 (BYMS256)
YMS257     Weaver, Orange 10.1942 30.9.1943 1.1944 // --- to United Kingdom before commission 1.1944 (BYMS2257)
YMS258     Weaver, Orange 10.1942 28.10.1943 2.1944 // --- to United Kingdom before commission 2.1944 (BYMS2258)
YMS259     South Coast, Newport Beach 5.1942 21.8.1942 3.1943 stricken 9.1947
YMS260     South Coast, Newport Beach 5.1942 6.9.1942 4.1943 to Soviet Union 8.1945 (T-527)
YMS261     South Coast, Newport Beach 6.1942 25.9.1942 7.1943 // --- to United Kingdom before commission 7.1943 (BYMS261)
YMS262, 8.1951- AMCU13, 2.1955-  MHC13 8.1951- James M. Gillis   South Coast, Newport Beach 9.1942 24.12.1942 8.1943 survey vessel AGS13 James M. Gillis 3.1945-8/1951, stricken 1.1960
YMS263     South Coast, Newport Beach 8.1942 2.11.1942 8.1943 survey vessel AGS14 Simon Newcomb 3.1945
YMS264     South Coast, Newport Beach 9.1942 16.1.1943 10.1943 // --- to United Kingdom before commission 10.1943 (BYMS264)
YMS265     Kruse & Banks, North Bend 5.1942 25.11.1942 3.1943 stricken 6.1947
YMS266     Kruse & Banks, North Bend 5.1942 24.12.1942 4.1943 to Soviet Union 8.1945 (T-601)
YMS267     Kruse & Banks, North Bend 7.1942 6.3.1943 6.1943 stricken 6.1947
YMS268, 9.1947- AMS48, 2.1955- MSC(O)48 9.1947- Lapwing   Kruse & Banks, North Bend 12.1942 15.4.1943 6.1943 stricken 11.1959
YMS269     Bellingham Iron Wks 4.1942 7.9.1942 2.1943 stricken 6.1947
YMS270     Bellingham Iron Wks 5.1942 7.9.1942 3.1943 stricken 6.1947
YMS271, 9.1947- AMS49, 2.1955- MSC(O)49 9.1947- Lorikeet   Bellingham Iron Wks 7.1942 17.10.1942 4.1943 TS 10.1959, stricken 10.1968
YMS272     Bellingham Iron Wks 7.1942 14.11.1942 5.1943 to Soviet Union 7.1945 (T-597)
YMS273     Bellingham Iron Wks 7.1942 26.12.1942 7.1943 to Soviet Union 7.1945 (T-598)
YMS274     Bellingham Iron Wks 9.1942 9.1.1943 7.1943 stricken 6.1947
YMS275     Bellingham Iron Wks 11.1942 4.2.1943 8.1943 wrecked 9.10.1945
YMS276     Bellingham Iron Wks 11.1942 5.3.1943 9.1943 stricken 2.1947
YMS277     J. M. Martinac, Tacoma 2.1943 19.6.1943 10.1943 // --- to United Kingdom before commission 10.1943 (BYMS277)
YMS278     J. M. Martinac, Tacoma 3.1943 17.7.1943 11.1943 // --- to United Kingdom before commission 11.1943 (BYMS278)
YMS279     Henry C. Grebe, Chicago 1.1943 29.7.1943 10.1943 // --- to United Kingdom before commission 10.1943 (BYMS279)
YMS280     Henry C. Grebe, Chicago 1.1943 12.8.1943 10.1943 // --- to United Kingdom before commission 10.1943 (BYMS280)
YMS281     San Diego Marine 7.1942 30.10.1942 7.1943 stricken 10.1946
YMS282     San Diego Marine 8.1942 30.11.1942 8.1943 // --- to United Kingdom before commission 8.1943 (BYMS282)
YMS283     San Diego Marine 9.1942 30.12.1942 9.1943 stricken 2.1947
YMS284     San Diego Marine 10.1942 17.2.1943 10.1943 // --- to United Kingdom before commission 10.1943 (BYMS284)
YMS285     Northwestern, Bellingham 6.1942 20.3.1943 6.1943 to Soviet Union 9.1945 (T-610)
YMS286     Northwestern, Bellingham 6.1942 20.3.1943 6.1943 stricken 9.1946
YMS287     Associated, Seattle 7.1942 27.10.1942 3.1943 to Soviet Union 9.1945 (T-611)
YMS288     Associated, Seattle 8.1942 28.11.1942 3.1943 to Soviet Union 8.1945 (T-600)
YMS289     Associated, Seattle 10.1942 26.1.1943 6.1943 to Turkey 1947 (Kilimli)
YMS290, 9.1947- AMS50, 2.1955- MSC(O)50 9.1947- Nightingale   Associated, Seattle 11.1942 27.2.1943 7.1943 stricken 11.1959
YMS291, 9.1947- AMS51, 2.1955- MSC(O)51 9.1947- Reedbird   Associated, Seattle 1.1943 20.4.1943 8.1943 TS 12.1957, stricken 10.1968
YMS292     Associated, Seattle 3.1943 8.6.1943 10.1943 stricken 2.1947
YMS293     Associated, Seattle 4.1943 7.7.1943 10.1943 stricken 9.1946
YMS294, 9.1947- AMS57, 2.1955- MSC(O)57 9.1947- Redpoll   Associated, Seattle 6.1943 11.8.1943 9.1943 TS 11.1957, stricken 7.1959
YMS295     Associated, Seattle 7.1943 11.8.1943 11.1943 to Soviet Union 7.1945 (T-599)
YMS296     Associated, Seattle 8.1943 3.11.1943 12.1943 stricken 6.1947
YMS297     Tacoma Boat 1.1943 24.4.1943 9.1943 stricken 10.1946
YMS298     Tacoma Boat 2.1943 16.6.1943 10.1943 stricken 7.1946
YMS299, 9.1947- AMS52, 2.1955- MSC(O)52 9.1947- Rhea   William F. Stone, Oakland 6.1942 14.11.1942 4.1943 stricken 11.1959
YMS300     William F. Stone, Oakland 6.1942 7.12.192 7.1943 stricken 2.1947
YMS301     William F. Stone, Oakland 11.1942 1.5.1943 9.1943 to Soviet Union 8.1945 (T-605)
YMS302     William F. Stone, Oakland 12.1942 12.6.1943 11.1943 stricken 1.1948
YMS303     Rice Bros, E. Boothbay 5.1942 21.7.1943 8.1943 stricken 7.1946
YMS304     Rice Bros, E. Boothbay 6.1942 10.8.1943 10.1943 sunk 30.7.1944
YMS305     Rice Bros, E. Boothbay 7.1942 30.9.1943 11.1943 to Norway 5.1945 (NYMS305)
YMS306, 2.1947- AMS12, 2.1955- MSC(O)12 2.1947- Goldfinch   Rice Bros, E. Boothbay 9.1942 27.11.1943 1.1944 stricken 11.1957
YMS307     Rice Bros, E. Boothbay 10.1942 31.12.1943 2.1944 to Turkey 2.1948 (Kirte)
YMS308     Henry B. Nevins, New York 2.1943 21.7.1943 8.1943 stricken 1.1946
YMS309     Henry B. Nevins, New York 4.1943 17.8.1943 9.1943 stricken 6.1946
YMS310     Henry B. Nevins, New York 4.1943 11.9.1943 10.1943 stricken 6.1946
YMS311, 8.1945- YMSC311, 9.1947- AMS53, 2.1955- MSC(O)53 9.1947- Robin   Henry B. Nevins, New York 5.1943 6.10.1943 11.1943 stricken 8.1961
YMS312, 2.1947- AMS13, 2.1955- MSC(O)13 2.1947- Grackle   Henry B. Nevins, New York 6.1943 9.11.1943 12.1943 stricken 3.1963, to Brazil (Juruena)
YMS313     Harbor Boat, Terminal I 5.1942 23.2.1943 6.1943 stricken 6.1947
YMS314     Harbor Boat, Terminal I 6.1942 17.3.1943 7.1943 stricken 6.1947
YMS315     Harbor Boat, Terminal I 6.1942 14.4.1943 8.1943 stricken 6.1946
YMS316     Harbor Boat, Terminal I 6.1942 1.5.1943 8.1943 stricken 6.1947
YMS317, 2.1947- AMS14, 2.1955- MSC(O)14 2.1947- Grosbeak   South Coast, Newport Beach 10.1942 27.2.1943 11.1943 stricken 11.1959
YMS318     South Coast, Newport Beach 12.1942 1.5.1943 12.1943 stricken 1946
YMS319     South Coast, Newport Beach 1.1943 5.6.1943 2.1944 stricken 3.1948
YMS320     Al Larson, Terminal I 7.1942 9.1.1943 8.1943 stricken 6.1946
YMS321, 2.1947- AMS15, 2.1955- MSC(O)15 2.1947- Grouse   Al Larson, Terminal I 8.1942 20.2.1943 10.1943 TS 11.1958, wrecked 21.9.1963
YMS322     Al Larson, Terminal I 1.1943 31.5.1943 11.1943 stricken 4.1946
YMS323     Al Larson, Terminal I 2.1943 15.7.1943 12.1943 stricken 6.1946, to South Korea (구월산 [Guwolsan])
YMS324, 2.1947- AMS16, 8.1954- AMCU46, 2.1955- MHC46 2.1947- Gull   Al Larson, Terminal I 6.1943 14.10.1943 2.1944 minehunter 1.1955, stricken 3.1959
YMS325     Al Larson, Terminal I 7.1943 11.1.1944 4.1944 stricken 3.1947
YMS326     Ballard, Seattle 6.1942 17.11.1942 3.1943 stricken 6.1947
YMS327, 9.1947- AMS54, 2.1955- MSC(O)54 9.1947- Ruff   Ballard, Seattle 6.1942 5.12.1942 4.1943 TS 10.1959, stricken 11.1969
YMS328     Ballard, Seattle 7.1942 19.12.1942 5.1943 stricken 10.1946
YMS329     Ballard, Seattle 11.1942 23.2.1943 7.1943 stricken 6.1946
YMS330     Ballard, Seattle 12.1942 27.3.1943 8.1943 stricken 6.1946, to South Korea (강경 [Ganggyeong])
YMS331     Ballard, Seattle 12.1942 24.4.1943 9.1943 stricken 10.1946
YMS332     Ballard, Seattle 3.1943 5.6.1943 10.1943 to Soviet Union 9.1945 (T-607)
YMS333     Ballard, Seattle 6.1943 4.8.1943 12.1943 stricken 10.1946
YMS334     Seattle SB 6.1942 24.10.1942 3.1943 stricken 6.1946, to Thailand (ลาดหญ้า [Ladya])
YMS335     Seattle SB 7.1942 21.11.1942 4.1943 stricken 9.1947
YMS336     Seattle SB 10.1942 19.12.1942 5.1943 stricken 6.1946
YMS337     Seattle SB 11.1942 20.2.1943 7.1943 stricken 8.1946
YMS338     Seattle SB 1.1943 20.3.1943 8.1943 stricken 6.1946
YMS339     Seattle SB 3.1943 8.5.1943 9.1943 to China 6.1948
YMS340     Seattle SB 3.1943 26.6.1943 10.1943 stricken 6.1947
YMS341     Seattle SB 5.1943 21.8.1943 12.1943 wrecked 16.9.1945
YMS342     Bellingham Iron Wks 1.1943 5.4.1943 10.1943 stricken 8.1946
YMS343     Bellingham Iron Wks 2.1943 1.5.1943 11.1943 stricken 3.1947
YMS344     Bellingham Iron Wks 3.1943 4.6.1943 1944 // --- completed as degaussing vessel YDG6
YMS345     Bellingham Iron Wks 4.1943 14.8.1943 12.1943 stricken 7.1946
YMS346     Gibbs Gas Engine, Jacksonville 8.1942 5.1.1943 8.1943 stricken 6.1946, to China
YMS347     Gibbs Gas Engine, Jacksonville 9.1942 7.1.1943 8.1943 stricken 6.1946
YMS348     Gibbs Gas Engine, Jacksonville 9.1942 9.2.1943 9.1943 stricken 2.1948
YMS349     Gibbs Gas Engine, Jacksonville 9.1942 5.3.1943 9.1943 stricken 2.1947
YMS350     Gibbs Gas Engine, Jacksonville 10.1942 29.1.1943 9.1943 sunk 2.7.1944
YMS351     Gibbs Gas Engine, Jacksonville 10.1942 21.2.1943 10.1943 stricken 6.1946
YMS352     Gibbs Gas Engine, Jacksonville 1.1943 14.5.1943 10.1943 stricken 7.1946
YMS353     Gibbs Gas Engine, Jacksonville 1.1943 20.5.1943 11.1943 stricken 7.1946
YMS354     Gibbs Gas Engine, Jacksonville 1.1943 29.5.1943 11.1943 stricken 1.1947, to South Korea (금강산 [Geumgangsan])
YMS355     Gibbs Gas Engine, Jacksonville 1.1943 8.6.1943 11.1943 stricken 5.1946
YMS356     Gibbs Gas Engine, Jacksonville 2.1943 6.9.1943 12.1943 stricken 6.1946, to South Korea (김해 [Gimhae])
YMS357     Gibbs Gas Engine, Jacksonville 3.1943 16.9.1943 12.1943 stricken 8.1946
YMS358     Robert Jacob, New York 9.1942 22.3.1943 8.1943 stricken 1.1947, to South Korea (경주 [Gyeongju])
YMS359     Robert Jacob, New York 9.1942 9.4.1943 8.1943 stricken 4.1946
YMS360     Robert Jacob, New York 10.1942 16.6.1943 9.1943 stricken 4.1946
YMS361     Robert Jacob, New York 10.1942 11.6.1943 9.1943 stricken 5.1946
YMS362, 2.1947- AMS17, 2.1955- MSC(O)17 2.1947- Hawk   Robert Jacob, New York 11.1942 22.5.1943 10.1943 stricken 10.1957
YMS363     Wheeler, Brooklyn 11.1942 8.6.1943 8.1943 stricken 6.1946
YMS364     Wheeler, Brooklyn 11.1942 25.6.1943 8.1943 stricken 3.1948
YMS365     Wheeler, Brooklyn 12.1942 26.6.1943 8.1943 sunk 26.6.1945
YMS366     Wheeler, Brooklyn 12.1942 5.7.1943 9.1943 stricken 6.1946
YMS367     Wheeler, Brooklyn 12.1942 15.7.1943 9.1943 to China 10.1948
YMS368     Wheeler, Brooklyn 12.1942 17.7.1943 9.1943 stricken 6.1947
YMS369, 2.1947- AMS18, 2.1955- MSC(O)18 2.1947- Heron   Wheeler, Brooklyn 1.1943 24.7.1943 10.1943 to Japan 3.1955 (ぬわじま [Nuwajima])
YMS370     Wheeler, Brooklyn 1.1943 7.8.1943 10.1943 stricken 6.1946
YMS371, 2.1947- AMS19, 2.1955- MSC(O)19 2.1947- Hornbill   Weaver, Orange 11.1942 27.11.1943 2.1944 stricken 11.1959
YMS372, 2.1947- AMS20, 2.1955- MSC(O)20 2.1947- Hummer   Weaver, Orange 12.1942 23.12.1943 3.1944 stricken 2.1959, to Japan (にのしま [Moroshima)
YMS373, 2.1947- AMS21, 2.1955- MSC(O)21 2.1947- Jackdaw   Weaver, Orange 12.1942 23.1.1944 4.1944 to Brazil 1.1960 (Juruá)
YMS374, 2.1947- AMS22, 2.1955- MSC(O)22 2.1947- Kite   Weaver, Orange 1.1943 17.2.1944 5.1944 to South Korea 1.1956 (김포 [Gimpo])
YMS375     Greenport Basin 12.1942 27.2.1943 7.1943 stricken 2.1948, to Turkey (Küllük)
YMS376, 2.1947- AMS23, 2.1955- MSC(O)23 2.1947- Lark   Greenport Basin 1.1943 13.3.1943 8.1943 to Japan 2.1955 (もろしま [Ninoshima])
YMS377     Greenport Basin 2.1943 3.4.1943 8.1943 to Norway 3.1945 (NYMS377)
YMS378     Greenport Basin 3.1943 27.4.1943 9.1943 sunk 30.7.1944
YMS379     Greenport Basin 3.1943 29.5.1943 9.1943 to Norway 3.1945 (NYMS379)
YMS380     Greenport Basin 4.1943 29.5.1943 9.1943 to Norway 3.1945 (NYMS380)
YMS381     Greenport Basin 5.1943 17.7.1943 10.1943 to Norway 3.1945 (NYMS381)
YMS382     Greenport Basin 6.1943 21.8.1943 11.1943 to Norway 3.1945 (NYMS382)
YMS383     Seattle SB 4.1942 29.9.1942 2.1943 wrecked 9.10.1945
YMS384     Seattle SB 4.1942 17.10.1942 4.1943 wrecked 9.10.1945, never repaired
YMS385     Seattle SB 6.1942 27.10.1942 4.1943 sunk 1.10.1944
YMS386     Seattle SB 10.1942 23.3.1943 7.1943 stricken 7.1946
YMS387     Seattle SB 10.1942 16.4.1943 8.1943 stricken 7.1946
YMS388     Seattle SB 11.1942 10.5.1943 9.1943 stricken 6.1946
YMS389, 8.1945- YMSC389     Stadium, Cleveland 11.1942 6.3.1943 8.1943 stricken 7.1947
YMS390, 8.1945- YMSC390     Stadium, Cleveland 11.1942 3.4.1943 8.1943 stricken 6.1947
YMS391     Stadium, Cleveland 11.1942 8.5.1943 9.1943 stricken 6.1947
YMS392     Stadium, Cleveland 11.1942 10.6.1943 10.1943 stricken 6.1946, to South Korea (강계 [Ganggye])
YMS393     Harbor Boat, Terminal I 6.1942 29.5.1943 9.1943 stricken 6.1947, to China
YMS394     Harbor Boat, Terminal I 7.1942 24.6.1943 10.1943 stricken 9.1946
YMS395, 2.1947- AMS24, 2.1955- MSC(O)24 2.1947- Linnet   Harbor Boat, Terminal I 7.1942 15.7.1943 11.1943 TS 10.1959, stricken 10.1968
YMS396     Harbor Boat, Terminal I 7.1942 9.8.1943 1.1944 stricken 6.1947
YMS397     Henry B. Nevins, New York 6.1942 5.12.1942 1.1943 stricken 3.1947
YMS398     Henry B. Nevins, New York 6.1942 4.1.1943 3.1943 stricken 3.1947
YMS399     Henry B. Nevins, New York 6.1942 8.2.1943 4.1943 stricken 6.1947
YMS400, 2.1947- AMS25 2.1947- Magpie   Henry B. Nevins, New York 7.1942 24.3.193 5.1943 sunk 1.10.1950
YMS401     Henry B. Nevins, New York 7.1942 1.4.1943 6.1943 stricken 2.1947
YMS402, 9.1947- AMS55, 2.1955- MSC(O)55 9.1947- Seagull   Henry B. Nevins, New York 7.1942 17.4.1943 6.1943 stricken 11.1959
YMS403     Henry B. Nevins, New York 8.1942 22.5.1943 7.1943 stricken 6.1947
YMS404     Henry B. Nevins, New York 8.1942 26.5.1943 8.1943 stricken 2.1947
YMS405     Henry C. Grebe, Chicago 1.1943 24.8.1943 11.1943 stricken 2.1947
YMS406     Henry C. Grebe, Chicago 1.1943 6.9.1943 11.1943 to Norway 5.1945 (NYMS406)
YMS407     Henry C. Grebe, Chicago 4.1943 16.9.1943 12.1943 stricken 7.1946
YMS408     Henry C. Grebe, Chicago 4.1943 9.10.1943 12.1943 stricken 7.1947
YMS409     Henry C. Grebe, Chicago 5.1943 27.10.1943 1.1944 wrecked 14.9.1944
YMS410     Bellingham Iron Wks 9.1943 22.2.1944 9.1944 stricken 11.1946
YMS411     Bellingham Iron Wks 10.1943 22.4.1944 8.1944 stricken 8.1946, to Philippines
YMS412     Bellingham Iron Wks 11.1943 3.6.1944 9.1944 stricken 5.1947
YMS413     Bellingham Iron Wks 1.1944 4.7.1944 10.1944 stricken 1.1947, to South Korea (광주 [Gwangju])
YMS414     Stadium, Cleveland 9.1943 11.3.1944 9.1944 stricken 5.1947
YMS415, 3.1947- AMS40, 2.1955- MSC(O)40 3.1947- Chatterer   Stadium, Cleveland 10.1943 15.4.1944 10.1944 to Japan 4.1955 (ゆりしま [Yurishima])
YMS416     Stadium, Cleveland 1.1944 28.5.1944 10.1944 stricken 2.1947
YMS417, 2.1947- AMS26, 10.1954- AMCU47, 2.1955- MHC47 2.1947- Merganser   Stadium, Cleveland 1.1944 29.6.1944 11.1944 minehunter 10.1954, stricken 5.1959
YMS418     Henry C. Grebe, Chicago 9.1943 22.2.1944 9.1944 stricken 2.1947
YMS419, 2.1947- AMS27, 2.1955- MSC(O)27 2.1947- Mockingbird   Henry C. Grebe, Chicago 9.1943 23.3.1944 11.1944 to South Korea 1.1956 (고창 [Gochang])
YMS420     Henry C. Grebe, Chicago 9.1943 8.4.1944 2.1945 stricken 1.1950, to Canada (Cordova)
YMS421     Henry C. Grebe, Chicago 9.1943 15.4.1944 3.1945 wrecked 15.9.1945
YMS422, 2.1947- AMS28, 2.1955- MSC(O)28 2.1947- Osprey   Astoria Marine 10.1943 1.6.1944 9.1944

to Japan 3.1955 (やくしま [Yakushima])
YMS423     Astoria Marine 12.1943 5.8.1944 10.1944 stricken 2.1947, to South Korea (가야산 [Gayasan])
YMS424     Astoria Marine 1.1944 12.8.1944 11.1944 wrecked 9.10.1945, never repaired
YMS425, 9.1947- AMS58, 2.1955- MSC(O)58 9.1947- Siskin   Astoria Marine 6.1944 6.9.1944 12.1944 stricken 10.1968
YMS426     Mojean & Ericson, Tacoma 9.1943 9.2.1944 9.1944 stricken 6.1947
YMS427     Mojean & Ericson, Tacoma 11.1943 25.3.1944 11.1944 stricken 2.1947
YMS428     Mojean & Ericson, Tacoma 2.1944 5.6.1944 1.1945 to Soviet Union 5.1945 (T-525)
YMS429     Mojean & Ericson, Tacoma 3.1944 30.11.1944 3.1945 stricken 2.1947
YMS430, 2.1947- AMS29, 2.1955- MSC(O)29 2.1947- Ostrich   Tacoma Boat 11.1943 23.3.1944 10.1944 stricken 11.1959
YMS431     Tacoma Boat 1.1944 20.5.1944 11.1944 stricken 8.1946
YMS432     Tacoma Boat 3.1944 8.7.1944 12.1944 stricken 2.1947
YMS433     Tacoma Boat 6.1944 30.9.1944 2.1945 stricken 8.1946
YMS434, 2.1947- AMS30 2.1947- Parrakeet   J. M. Martinac, Tacoma 10.1943 10.5.1944 11.1944 stricken 6.1947
YMS435     J. M. Martinac, Tacoma 5.1944 30.9.1944 3.1945 to Soviet Union 5.1945 (T-526)
YMS436     J. M. Martinac, Tacoma 6.1944 15.3.1945 5.1945 stricken 3.1947
YMS437, 2.1947- AMS31 2.1947- Partridge   J. M. Martinac, Tacoma 10.1944 22.4.1945 7.1945 sunk 2.2.1951
YMS438     Robert Jacob, New York 11.1943 7.7.1944 10.1944 stricken 3.1947
YMS439     Robert Jacob, New York 10.1943 14.7.1944 11.1944 stricken 7.1946
YMS440     Robert Jacob, New York 11.1943 28.10.1944 12.1944 stricken 8.1946
YMS441, 2.1947- AMS32, 2.1955- MSC(O)32 2.1947- Pelican   Robert Jacob, New York 11.1943 13.11.1944 2.1945 to Japan 4.1955 (おぎしま [Ogishima])
YMS442, 2.1947- AMS33, 2.1955- MSC(O)33 2.1947- Plover   Hiltebrant, Kingston 10.1943 20.4.1944 10.1944 stricken 10.1968
YMS443, 2.1947- AMS34, 9.1954- AMCU48, 2.1955- MHC48 2.1947- Redhead   Hiltebrant, Kingston 10.1943 5.5.1944 11.1944 minehunter 9.1954, stricken 11.1959
YMS444, 9.1947- AMS56, 2.1955- MSC(O)56 9.1947- Turkey   Hiltebrant, Kingston 11.1943 20.7.1944 12.1944 stricken 10.1968
YMS445     Hiltebrant, Kingston 3.1944 28.9.1944 3.1945 stricken 3.1947
YMS446, 2.1947- AMS35, 2.1955- AMCU49, 2.1955- MHC49 2.1947- Sanderling   Robert Jacob, New York 5.1943 26.2.1944 6.1944 minehunter 2.1955, stricken 11.1959
YMS447     Robert Jacob, New York 6.1943 18.3.1944 6.1944 to Soviet Union 3.1945 (T-181)
YMS448     Robert Jacob, New York 6.1943 27.3.1944 7.1944 to Soviet Union 4.1945 (T-185)
YMS449     South Coast, Newport Beach 6.1943 29.2.1944 7.1944 stricken 7.1946
YMS450     South Coast, Newport Beach 8.1943 15.4.1944 11.1944 // --- commissioned as chaser PCS1399
YMS451     South Coast, Newport Beach 9.1943 20.5.1944 12.1944 // --- commissioned as chaser PCS1400
YMS452     South Coast, Newport Beach 1943 23.6.1944 2.1945 // --- commissioned as chaser PCS1401
YMS453     Greenport Basin 7.1943 2.10.1943 6.1944 to Soviet Union 5.1945 (T-189)
YMS454     Greenport Basin 8.1943 23.10.1943 6.1944 wrecked 9.10.1945, never repaired
YMS455     Greenport Basin 8.1943 13.11.1943 7.1944 to Soviet Union 5.1945 (T-190)
YMS456     Greenport Basin 9.1943 11.12.1943 8.1944 to Soviet Union 5.1945 (T-191)
YMS457     Greenport Basin 11.1943 8.1.1944 9.1944 to Soviet Union 5.1945 (T-182)
YMS458     Greenport Basin 12.1943 12.2.1944 10.1944 stricken 2.1947
YMS459     Greenport Basin 1.1944 8.4.1944 10.1944 stricken 1.1946
YMS460     Stadium, Cleveland 6.1943 4.12.1943 5.1944 to Soviet Union 3.1945 (T-183)
YMS461, 2.1947- AMS36, 2.1955- MSC(O)36 2.1947- Swallow   Stadium, Cleveland 6.1943 8.1.1944 6.1944 to Japan 4.1955 (ゆげしま [Yugeshima])
YMS462     Hiltebrant, Kingston 4.1943 11.10.1943 6.1944 to Soviet Union 4.1945 (T-184)
YMS463     Hiltebrant, Kingston 5.1943 21.3.1944 7.1944 to South Korea 5.1947 (강릉 [Gangneung])
YMS464     Gibbs Gas Engine, Jacksonville 5.1943 9.12.1943 6.1944 to Soviet Union 5.1945 (T-188)
YMS465     Gibbs Gas Engine, Jacksonville 6.1943 4.1.1944 6.1944 to Soviet Union 5.1945 (T-187)
YMS466     Gibbs Gas Engine, Jacksonville 6.1943 22.1.1944 7.1944 to Soviet Union 5.1945 (T-192)
YMS467     Gibbs Gas Engine, Jacksonville 6.1943 22.2.1944 8.1944 stricken 2.1947
YMS468     Gibbs Gas Engine, Jacksonville 6.1943 23.3.1944 8.1944 stricken 2.1948, to Turkey (Kuşadası)
YMS469     Gibbs Gas Engine, Jacksonville 7.1943 17.3.1944 9.1944 to Soviet Union 4.1945 (T-186)
YMS470, 2.1947- AMS37, 2.1955- MSC(O)37 2.1947- Swan   Gibbs Gas Engine, Jacksonville 8.1943 5.4.1944 10.1944 stricken 11.1959
YMS471, 3.1947- AMS38, 2.1955- MSC(O)38 3.1947- Verdin   Gibbs Gas Engine, Jacksonville 9.1943 23.5.1944 10.1944 stricken 11.1959
YMS472     Gibbs Gas Engine, Jacksonville 9.1943 21.6.1944 11.1944 wrecked 16.9.1945
YMS473     Harbor Boat, Terminal I 5.1943 22.4.1944 8.1944 stricken 6.1946, to South Korea (고원 [Gowon])
YMS474     Harbor Boat, Terminal I 5.1943 23.5.1944 12.1944 // --- commissioned as chaser PCS1444
YMS475     San Diego Marine 4.1943 23.5.1944 8.1944 stricken 10.1946
YMS476     San Diego Marine 4.1943 14.6.1944 11.1944 // --- commissioned as chaser PCS1448
YMS477     Tacoma Boat 7.1943 6.11.1943 7.1944 stricken 8.1946
YMS478     Tacoma Boat 9.1943 8.1.1944 8.1944 wrecked 8.10.1945, never repaired
YMS479, 2.1947- AMS39, 2.1955- AMCU50, 2.1955- MHC50 2.1947- Waxbill   Mojean & Ericson, Tacoma 4.1943 30.9.1943 7.1944 minehunter 2.1955, stricken 11.1959
YMS480     Bellingham Iron Wks 5.1943 20.11.1943 3.1944 // --- commissioned as degaussing vessel YDG7
YMS481     Bellingham Iron Wks 5.1943 20.11.1943 3.1944 sunk 2.5.1945

 

Displacement standard, t

270

Displacement full, t

320

Length, m

39.6 wl 41.5 oa

Breadth, m

7.47

Draught, m

2.36 full load

No of shafts

2

Machinery

2 diesels

Power, h. p.

800

Max speed, kts

14

Fuel, t

diesel oil
Endurance, nm(kts)

2000 (12)

Armament

1 x 1 - 76/50 Mk 20/21, 2 x 1 - 20/70 Mk 4, 2 DCT, 2 DCR, mechanical, acoustic and magnetic minesweeping gear

Electronic equipment

presumably SF or SO or SU radar
Complement

60

   

Project history: Designing of minesweeper for protection of bases against mine danger was started after occurrence of 105-ft minesweeping boat in Britain. This ship has made good impression upon Americans, first of all by construction simplicity and cheapness. It has been decided to create for the USN the similar ship which can be built in big numbers by practically any small shipbuilder. First time they wished to built minesweeper in hull of 110-ft SC, however from similar thought rejected because of impossibility to place a diesel-generator necessary for magnetic sweep. The hull should be projected anew. For raise of seaworthiness short forecastle was provided. As well as in a case with SC, wood was chosen as construction material for building depreciation.

YMS class minesweepers were sectioned into three practically identical sub-classes, the basic difference between which consisted in number of funnels: on YMS1-134 they were two, on YMS135-445 and 481 one, and on remaining the funnel in general was absent. Britain additionally received 80 minesweepers (BYMS1-80), built specially for RN.

In years of war 20 YMS were lost.

Shortage of submarine chasers on early war stage, has compelled naval chiefs to undertake a number of emergency measures on overcoming of this crisis. The program of building of submarine chasers in hulls of minesweepers of YMS class became one of them. In June, 1942 the order for such 100 ships has followed. It was supposed to increase at the expense of removing of a diesel-generator a stock of fuel and to raise an endurance, to install the second 76mm gun, Hedgehog and increase to 52 DC stowage. However calculations have shown, that in this case the ship was overloaded and works were limited to adding of single 40mm Bofors and Mousetrap launchers.

New chasers were unsuccessful: having 14kts speed and weakest among other ASW ships armament, they were suited for anti-submarine role a little, and the building program was begun to curtail already in the end of 1942. Only 90 ships were really ordered, subsequently building of 31 of them was cancelled Rambler's Top100  

Modernizations: late1944, YMS(C)38, 176, 311, 389, 390: were converted to amphibious command ships: - minesweeping gear

1.1946, YMS: 1 x 1 - 76/50 Mk 21/22, 2 x 1 - 20/70 Mk 10, 2 DCT, 2 DCR, mechanical, acoustic and magnetic minesweeping gear, SF or SO or SU radar

1951, Harkness, James M. Gillis; 1954, Gull, Merganser, Redhead, Sanderling, Waxbill, 1957, Bobolink, Bunting: were converted to minehunters: - 1 x 1 - 20/70, 2 DCT, 2 DCR, minesweeping gear; + FM sonar, diving equipment

Naval service: YMS133 foundered 20.2.1943 at Coos Bay, Oregon. YMS127 ran aground 10.1.1944 at Aleutian Islands. YMS30 was mined off Anzio 25.1.1944. YMS350 was stricken by mine 2.7.1944 off Normandy coast. YMS304 and YMS378 were mined 30.7.1944 off Normandy coast. YMS24 was mined off St. Tropez 16.8.1944. YMS21 was stricken by a mine off Toulon 1.9.1944. YMS409 foundered during hurricane off Cape Hatteras 12.9.1944. YMS19 was mined in Palau Islands area 24.9.1944. YMS385 was mined off Ulithi, Caroline Islands, 1.10.1944. YMS70 foundered in a storm off Leyte 17.10.1944. YMS14 sunk after collision in Boston Harbor 11.1.1945. YMS48 was damaged by Japanese coastal guns at Corregidor 14.2.1945 and sunk by destroyer Fletcher. YMS71 was mined off Borneo 3.4.1945. YMS103 was mined at Okinawa 8.4.1945, beached and abandoned. YMS481 was sunk by Japanese coastal guns off Tarakan, Borneo, 2.5.1945. YMS50 was mined off Balikpapan 18.6.1945. YMS39 was mined off Balikpapan 26.6.1945. YMS365 was damaged by mine at Balikpapan 26.6.1945 and sunk by American aircraft. YMS84 was mined off Balikpapan 9.7.1945. YMS98, YMS341, YMS421 and YMS472 foundered during typhoon off Okinawa 16.9.1945. YMS478 grounded at Wakanoura, Japan, 8.10.1945. YMS90, YMS146, YMS151, YMS275, YMS383, YMS384, YMS424 and YMS454 were lost at Okinawa during typhoon 9.10.1945. Magpie was stricken by floating mine and sank off Chusan Po, Korea, 1.10.1950. Partridge was mined in Wonsan Harbor (Korea) 2.2.1951. Grouse ran aground at Rockport 21.9.1963 and destroyed by explosives a week later.

YMS63 1942

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