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Yard Minesweepers

(YMS)

Most recent update: April 18, 2015.

In the three-year period from the spring of 1942 through the spring of 1945, 35 boatyards turned out 561 wooden-hulled minesweepers. All were of essentially the same design - 136 feet long, with a speed of 13 knots - but the Mk. I (YMS-1-135 and BYMS-1-30) had two stacks, the Mk. II (YMS-135-445 and BYMS-31-80) had one stack and the Mk. III (YMS-446-481) had no stacks. 150 of these boats were transferred directly from the boatbuilder to the Royal Navy. The first 80 of these had their own pennant numbers (BYMS-1 through 80, redesignated BYMS-2001 through 2080 by the British). The other 70 were transferred from the US Navy and given British pennant numbers 2000 greater than the U.S. number (e.g., YMS-162 became BYMS-2162). Another 30 boats were transferred to the Free French Navy in 1944 and 45 to the Soviet Union in 1945. After the war, many more were transferred or sold to allied navies. There is a shortage of information about what happened to these great boats, which played a major part in the war effort. It is easy to assume that most were scrapped after they were struck, but many are known to have had second and third careers, in a wide variety of roles. Thanks to Rene Westerhuis for filling almost all the gaps.

If you have an addition or correction for this page, please send it in.

Builder Location LOA Tons Delivered Notes
BYMS-1 American Car & Foundry Wilmington DE 136 320 30 May 1942 returned 1946
BYMS-2 American Car & Foundry Wilmington DE 136 320 22 Jun 1942 struck 1947, to Greek Customs
BYMS-3 American Car & Foundry Wilmington DE 136 320 14 Jul 1942 returned 1946
BYMS-4 American Car & Foundry Wilmington DE 136 320 1 Aug 1942 struck 1947, to Greek Customs
BYMS-5 Wheeler Shipbuilding Whitestone NY 136 320 14 Sep 1942 to South Korea 1948 as Kil Chu, scrapped 1959
BYMS-6 Wheeler Shipbuilding Whitestone NY 136 320 28 Sep 1942 to South Korea 1948 as Kong City, sunk 1950
BYMS-7 Wheeler Shipbuilding Whitestone NY 136 320 8 Oct 1942 returned 1946
BYMS-8 Wheeler Shipbuilding Whitestone NY 136 320 19 Oct 1942 to South Korea 1948 as Yong Kung, scrapped 1955
BYMS-9 Associated Shipbuilders Seattle WA 136 320 1 Sep 1942 to Italy 1947 as Anemone, struck 1966
BYMS-10 Associated Shipbuilders Seattle WA 136 320 31 Jul 1942 returned 1946
BYMS-11 Associated Shipbuilders Seattle WA 136 320 21 Sep 1942 returned 1947
BYMS-12 Associated Shipbuilders Seattle WA 136 320 6 Oct 1942 to Italy 1947 as Biancospino, struck 1966
BYMS-13 Associated Shipbuilders Seattle WA 136 320 30 Oct 1942 to Egypt 1949 as Gaza, wrecked 1950
BYMS-14 Associated Shipbuilders Seattle WA 136 320 24 Nov 1942 to Italy 1947 as Geranio, struck 1966
BYMS-15 Dachel-Carter Shipbuilding Benton Harbor MI 136 320 21 Jul 1942 returned 1947
BYMS-16 Dachel-Carter Shipbuilding Benton Harbor MI 136 320 9 Jun 1942 struck 1947, to Greek Customs
BYMS-17 Bellingham Marine Bellingham WA 136 320 30 May 1942 to China 1948, struck 1976
BYMS-18 Bellingham Marine Bellingham WA 136 320 16 Jul 1942 to South Korea as YMS-517, scrapped
BYMS-19 Bellingham Marine Bellingham WA 136 320 14 Aug 1942 mined off Cotrone and lost 1943
BYMS-20 Bellingham Marine Bellingham WA 136 320 29 Aug 1942 returned 1947
BYMS-21 Seattle Shipbuilding Seattle WA 136 320 3 Aug 1942 struck 1947, to Greek Customs
BYMS-22 Seattle Shipbuilding Seattle WA 136 320 5 Sep 1942 mined off Frejus and lost 1944
BYMS-23 Seattle Shipbuilding Seattle WA 136 320 27 Oct 1942 to Italy 1947 as Mughetto, struck 1966
BYMS-24 Seattle Shipbuilding Seattle WA 136 320 9 Nov 1942 to Italy 1947 as Narcisco, struck 1966
BYMS-25 Ballard Marine Railway Seattle WA 136 320 14 Jul 1942 returned 1947
BYMS-26 Ballard Marine Railway Seattle WA 136 320 22 Aug 1942 sold 1946 as research ship Calypso, Jacques Cousteau
BYMS-27 Ballard Marine Railway Seattle WA 136 320 21 Sep 1942 to Italy 1947 as Oleandro, struck 1966
BYMS-28 Ballard Marine Railway Seattle WA 136 320 30 Oct 1942 to Egypt 1949 as Arish, discarded 1970
BYMS-29 Barbour Boat Works New Bern NC 136 320 8 Jun 1942 struck 1948, to Greek Customs
BYMS-30 Barbour Boat Works New Bern NC 136 320 29 Jul 1942 mined off Le Havre and lost 1944
BYMS-31 American Car & Foundry Wilmington DE 136 320 13 Mar 1943 sold 1947 as Nanridi, Monte Carmelo 1950
BYMS-32 American Car & Foundry Wilmington DE 136 320 10 Apr 1943 to Finland 1948, to the Finnish Navy 1951 as Tammenpaa
BYMS-33 American Car & Foundry Wilmington DE 136 320 4 Jun 1943 to Greece 1946 as Kalymnos, struck 1973
BYMS-34 American Car & Foundry Wilmington DE 136 320 29 Jun 1943 struck 1947, to Greek Customs
BYMS-35 American Car & Foundry Wilmington DE 136 320 14 Aug 1943 to Egypt 1949 as Malek Fouad, discarded 1970
BYMS-36 American Car & Foundry Wilmington DE 136 320 20 Sep 1943 returned 1947
BYMS-37 Barbour Boat Works New Bern NC 136 320 15 Mar 1943 to Italy as Orchidea 1947, struck 1966
BYMS-38 Barbour Boat Works New Bern NC 136 320 30 Apr 1943 to the Netherlands 1946 as Marsdiep (A-906), to Brazi as Siriri
BYMS-39 Barbour Boat Works New Bern NC 136 320 16 Jun 1943 returned 1947
BYMS-40 Barbour Boat Works New Bern NC 136 320 15 Aug 1943 struck 1947, to Greek Customs
BYMS-41 Barbour Boat Works New Bern NC 136 320 9 Oct 1943 to Egypt 1949 as Darfur, to Algeria 1962 as Sidi Fradj
BYMS-42 Barbour Boat Works New Bern NC 136 320 13 Nov 1943 to Italy as Gladiolo 1947, struck 1966
BYMS-43 Gibbs Gas Engine Jacksonville FL 136 320 19 Nov 1942 returned 1947
BYMS-44 Gibbs Gas Engine Jacksonville FL 136 320 29 Dec 1942 to Finland 1948, to the Finnish Navy 1949 as Purunpaa
BYMS-45 Gibbs Gas Engine Jacksonville FL 136 320 14 Jan 1943 returned 1947
BYMS-46 Gibbs Gas Engine Jacksonville FL 136 320 3 Feb 1943 to the Netherlands 1946 as Westerschelde (A-873)
BYMS-47 Gibbs Gas Engine Jacksonville FL 136 320 14 Feb 1943 to Finland 1948, to the Finnish Navy 1951 as Katanpaa
BYMS-48 Gibbs Gas Engine Jacksonville FL 136 320 7 Apr 1943 to the Netherlands 1946 as Zuiderdiep (A-904)
BYMS-49 Gibbs Gas Engine Jacksonville FL 136 320 7 Apr 1943 to Finland 1948, to the Finnish Navy 1949 as Vahterpaa
BYMS-50 Gibbs Gas Engine Jacksonville FL 136 320 7 Apr 1943 to the Netherlands 1946 as Hollandsch Diep (M-833)
BYMS-51 Gibbs Gas Engine Jacksonville FL 136 320 5 May 1943 returned 1947
BYMS-52 Gibbs Gas Engine Jacksonville FL 136 320 21 May 1943 returned 1947
BYMS-53 Gibbs Gas Engine Jacksonville FL 136 320 9 Jun 1943 mined off Porto Corsini and lost 1945
BYMS-54 Gibbs Gas Engine Jacksonville FL 136 320 29 Jun 1943 to Greece 1946 as Aura, struck 1967
BYMS-55 Westergard Boat Works Biloxi MS 136 320 6 May 1943 to South Korea 1948 as Ko Yung, scrapped 1959
BYMS-56 Westergard Boat Works Biloxi MS 136 320 21 Jun 1943 to Greece 1946 as Paxoi, struck 1972
BYMS-57 Westergard Boat Works Biloxi MS 136 320 22 Jul 1943 struck 1948; To Greek Customs ('contraband chaser')
BYMS-58 Westergard Boat Works Biloxi MS 136 320 22 Jul 1943 to Greece 1946 as Ariadni, struck 1975
BYMS-59 Westergard Boat Works Biloxi MS 136 320 30 Aug 1943 returned 1947
BYMS-60 Westergard Boat Works Biloxi MS 136 320 14 Sep 1943 to Greece 1946 as Vegas, struck 1975
BYMS-61 Westergard Boat Works Biloxi MS 136 320 30 Sep 1943 returned 1947
BYMS-62 Westergard Boat Works Biloxi MS 136 320 30 Oct 1943 returned 1947
BYMS-63 Westergard Boat Works Biloxi MS 136 320 10 Nov 1943 returned 1947
BYMS-64 Westergard Boat Works Biloxi MS 136 320 22 Nov 1943 returned 1947
BYMS-65 Wheeler Shipbuilding Whitestone NY 136 320 22 Jan 1943 to Greece 1946 as Karteria, struck 1973
BYMS-66 Wheeler Shipbuilding Whitestone NY 136 320 8 Feb 1943 to Greece 1946 as Papalos, struck 1973
BYMS-67 Wheeler Shipbuilding Whitestone NY 136 320 23 Feb 1943 to Greece 1946 as Salaminia, struck 1960
BYMS-68 Wheeler Shipbuilding Whitestone NY 136 320 16 Mar 1943 to Greece 1946 as Lefkas, struck 1966
BYMS-69 Wheeler Shipbuilding Whitestone NY 136 320 30 Mar 1943 to Egypt 1949 as Naharia, discarded 1970
BYMS-70 Wheeler Shipbuilding Whitestone NY 136 320 15 Apr 1943 returned 1947
BYMS-71 Wheeler Shipbuilding Whitestone NY 136 320 4 May 1943 struck 1947, to Greek Customs
BYMS-72 Wheeler Shipbuilding Whitestone NY 136 320 15 May 1943 captured off Kalymnos 1943
BYMS-73 Wheeler Shipbuilding Whitestone NY 136 320 31 May 1943 to Italy as Begonia 1947, Marsciallo Oltramonte
BYMS-74 Wheeler Shipbuilding Whitestone NY 136 320 8 Jun 1943 to Greece 1946 as Kassos, sunk off Piraeus 1944
BYMS-75 Wheeler Shipbuilding Whitestone NY 136 320 18 Jun 1943 to Egypt 1949 as Kaisaria, discarded 1970
BYMS-76 Wheeler Shipbuilding Whitestone NY 136 320 26 Jun 1943 to Greece 1946 as Prokyon, struck 1968
BYMS-77 Wheeler Shipbuilding Whitestone NY 136 320 6 Jul 1943 mined in the Gulf of Corinth and lost 1944
BYMS-78 Wheeler Shipbuilding Whitestone NY 136 320 14 Jul 1943 returned 1948
BYMS-79 Wheeler Shipbuilding Whitestone NY 136 320 24 Jul 1943 returned 1948
BYMS-80 Wheeler Shipbuilding Whitestone NY 136 320 3 Aug 1943 returned 1948
YMS-1 Henry B. Nevins City Island NY 136 320 25 Mar 1942 struck 1946
YMS-2 Henry B. Nevins City Island NY 136 320 9 Apr 1942 struck 1947
YMS-3 Henry B. Nevins City Island NY 136 320 25 Apr 1942 to France 1944 as Heliotrope (D-334)
YMS-4 Henry B. Nevins City Island NY 136 320 1 May 1942 struck 1946
YMS-5 Henry B. Nevins City Island NY 136 320 19 May 1942 struck 1946
YMS-6 Henry B. Nevins City Island NY 136 320 18 Jun 1942 struck 1947
YMS-7 Henry B. Nevins City Island NY 136 320 4 Jun 1942 struck 1946
YMS-8 Henry B. Nevins City Island NY 136 320 27 Jun 1942 struck 1946
YMS-9 Henry B. Nevins City Island NY 136 320 11 Jul 1942 struck 1946
YMS-10 Henry B. Nevins City Island NY 136 320 24 Jul 1942 struck 1946
YMS-11 Henry B. Nevins City Island NY 136 320 6 Aug 1942 struck 1946
YMS-12 Rice Brothers East Boothbay ME 136 320 1 Jul 1942 struck 1946
YMS-13 Rice Brothers East Boothbay ME 136 320 13 Aug 1942 to France 1944 as Basilic (D-317)
YMS-14 Rice Brothers East Boothbay ME 136 320 7 Oct 1942 sunk in Boston Harbor 1945
YMS-15 Rice Brothers East Boothbay ME 136 320 5 Dec 1942 to France 1944 as Myosotis (D-338)
YMS-16 Rice Brothers East Boothbay ME 136 320 15 Feb 1943 to France 1944 as Capucine (D-322)
YMS-17 Rice Brothers East Boothbay ME 136 320 26 Apr 1943 struck 1946
YMS-18 Herreshoff Manufacturing Bristol RI 136 320 9 May 1942 struck 1946
YMS-19 Herreshoff Manufacturing Bristol RI 136 320 14 May 1942 mined off Palau and lost 1944
YMS-20 Greenport Basin Greenport NY 136 320 18 Apr 1942 to France 1944 as Gentiane (D-327)
YMS-21 Greenport Basin Greenport NY 136 320 18 Apr 1942 mined off Toulon and lost 1944
YMS-22 Greenport Basin Greenport NY 136 320 14 May 1942 struck 1946
YMS-23 Greenport Basin Greenport NY 136 320 7 May 1942 to France 1944 as Perce Neige (D-201)
YMS-24 Greenport Basin Greenport NY 136 320 25 May 1942 mined off St. Tropez and lost 1944
YMS-25 Greenport Basin Greenport NY 136 320 5 Jun 1942 to France 1944 as __________ (D ___)
YMS-26 Greenport Basin Greenport NY 136 320 16 Jun 1942 to France 1944 as Pimpernelle (D-211)
YMS-27 Greenport Basin Greenport NY 136 320 30 Jun 1942 to France 1944 as Hortensia (D-333)
YMS-28 Greenport Basin Greenport NY 136 320 17 Jul 1942 to France 1944 as Auberpine (D-315), to Vietnam 1954 as Ham Tu (HQ-11)
YMS-29 Greenport Basin Greenport NY 136 320 29 Jul 1942 to France 1944 as Jasmin (D-335), to Madagascar 1965 as Jasmine
YMS-30 Greenport Basin Greenport NY 136 320 11 Aug 1942 mined off Anzio and lost 1944
YMS-31 Greenport Basin Greenport NY 136 320 18 Aug 1942 to France 1944 as Primevere (D-212)
YMS-32 Hiltebrant Dry Dock Kingston NY 136 320 14 May 1942 struck 1946
YMS-33 Hiltebrant Dry Dock Kingston NY 136 320 10 Jun 1942 to the USSR (T603) 1945
YMS-34 Hiltebrant Dry Dock Kingston NY 136 320 27 Jun 1942 to France 1944 as D 311, renamed Anemone (D-25) 1947, M 665 1951
YMS-35 Hiltebrant Dry Dock Kingston NY 136 320 13 Jul 1942 struck 1946
YMS-36 Hiltebrant Dry Dock Kingston NY 136 320 31 Jul 1942 to France 1944 as Campanule (D-321)
YMS-37 Hiltebrant Dry Dock Kingston NY 136 320 21 Aug 1942 to France 1944 as Balsamine (D-316)
YMS-38 Robert Jacob City Island NY 136 320 3 Apr 1942 to the USSR (T-593) 1945
YMS-39 Robert Jacob City Island NY 136 320 7 Mar 1942 mined off Borneo and lost 1945
YMS-40 Robert Jacob City Island NY 136 320 23 Apr 1942 struck 1946
YMS-41 Robert Jacob City Island NY 136 320 12 May 1942 struck 1946
YMS-42 Wheeler Shipbuilding Whitestone NY 136 320 25 Apr 1942 to the USSR (T-592) 1945
YMS-43 Wheeler Shipbuilding Whitestone NY 136 320 11 May 1942 to France 1944 as Lotus (D-324), sunk in Tahiti 1958
YMS-44 Wheeler Shipbuilding Whitestone NY 136 320 25 May 1942 struck 1946
YMS-45 Wheeler Shipbuilding Whitestone NY 136 320 5 Jun 1942 reclassified 1947 as Barbet (AMS-41)
YMS-46 Wheeler Shipbuilding Whitestone NY 136 320 20 Jun 1942 struck 1947
YMS-47 Wheeler Shipbuilding Whitestone NY 136 320 2 Jul 1942 struck 1945
YMS-48 Wheeler Shipbuilding Whitestone NY 136 320 14 Jul 1942 damaged by gunfire at Corregidor and scuttled 1945
YMS-49 Wheeler Shipbuilding Whitestone NY 136 320 24 Jul 1942 struck 1946
YMS-50 Wheeler Shipbuilding Whitestone NY 136 320 3 Aug 1942 mined off Borneo and lost 1945
YMS-51 Wheeler Shipbuilding Whitestone NY 136 320 12 Aug 1942 struck 1947
YMS-52 Wheeler Shipbuilding Whitestone NY 136 320 21 Aug 1942 struck 1946
YMS-53 Wheeler Shipbuilding Whitestone NY 136 320 31 Aug 1942 struck 1946, sold as Myrnalynn
YMS-54 Gibbs Gas Engine Jacksonville FL 136 320 9 Feb 1942 struck 1946
YMS-55 Gibbs Gas Engine Jacksonville FL 136 320 3 Mar 1942 to France 1944 as Geranium (D-331)
YMS-56 Gibbs Gas Engine Jacksonville FL 136 320 18 Mar 1942 struck 1946
YMS-57 Gibbs Gas Engine Jacksonville FL 136 320 30 Mar 1942 struck 1946
YMS-58 Gibbs Gas Engine Jacksonville FL 136 320 16 Apr 1942 to France 1944 as Armoise (D-313)
YMS-59 Gibbs Gas Engine Jacksonville FL 136 320 24 Apr 1942 to the USSR (T-521) 1945
YMS-60 Gibbs Gas Engine Jacksonville FL 136 320 2 May 1942 struck 1947
YMS-61 Gibbs Gas Engine Jacksonville FL 136 320 6 Jun 1942 struck 1946
YMS-62 Gibbs Gas Engine Jacksonville FL 136 320 23 May 1942 to France 1944 as Clematite (D-323)
YMS-63 Gibbs Gas Engine Jacksonville FL 136 320 2 Jun 1942 to France 1944 as Tiare (D-353)
YMS-64 Gibbs Gas Engine Jacksonville FL 136 320 24 Jun 1942 to France 1944 as Jonquille (D-336)
YMS-65 Gibbs Gas Engine Jacksonville FL 136 320 5 Jul 1942 struck 1947
YMS-66 Weaver Shipyard Orange TX 136 320 30 Jun 1942 struck 1946
YMS-67 Weaver Shipyard Orange TX 136 320 15 Jul 1942 struck 1946
YMS-68 Weaver Shipyard Orange TX 136 320 1 Aug 1942 struck 1946
YMS-69 Weaver Shipyard Orange TX 136 320 15 Aug 1942 to France 1944 as Marjolaine (D-337), to Madagascar 1961 as Tanamasoandro
YMS-70 Weaver Shipyard Orange TX 136 320 7 Sep 1942 caught in a storm off Leyte and lost 1944
YMS-71 Weaver Shipyard Orange TX 136 320 23 Sep 1942 mined off Borneo and lost 1945
YMS-72 Weaver Shipyard Orange TX 136 320 15 Jan 1943 struck 1946
YMS-73 Weaver Shipyard Orange TX 136 320 22 Jan 1943 struck 1947
YMS-74 Weaver Shipyard Orange TX 136 320 8 Feb 1943 struck 1946
YMS-75 Weaver Shipyard Orange TX 136 320 22 Feb 1943 to the USSR 1945 as T-590
YMS-76 Stadium Yacht Basin Cleveland OH 136 320 4 Jun 1942 struck 1946
YMS-77 Stadium Yacht Basin Cleveland OH 136 320 15 May 1942 to France 1944 as a (D-202), mined off Marseilles and lost 1944
YMS-78 Stadium Yacht Basin Cleveland OH 136 320 17 Jun 1942 to France 1944 as Belledone (D-318), to Vietnam 1954 as Bach Dang (HQ-113)
YMS-79 Stadium Yacht Basin Cleveland OH 136 320 26 Jun 1942 to Turkey 1947 as Kas, struck 1963
YMS-80 Stadium Yacht Basin Cleveland OH 136 320 15 Jul 1942 reclassified 1947 as Albatross (AMS-1), sold 1959
YMS-81 Stadium Yacht Basin Cleveland OH 136 320 28 Jul 1942 sold 1948
YMS-82 Stadium Yacht Basin Cleveland OH 136 320 10 Aug 1942 to France 1944 as Dahlia (D-325), sold 1959, sunk at Martinique
YMS-83 Stadium Yacht Basin Cleveland OH 136 320 30 Aug 1942 to France 1944 as Digitale (D-326), to Vietnam 1954 as Choung Dong (HQ-116)
YMS-84 Henry C. Grebe & Co. Chicago IL 136 320 23 May 1942 mined off Borneo and lost 1945
YMS-85 Henry C. Grebe & Co. Chicago IL 136 320 30 Jun 1942 to the USSR 1945
YMS-86 Al Larson Boat Shop San Pedro CA 136 320 12 May 1942 struck 1946
YMS-87 Al Larson Boat Shop San Pedro CA 136 320 15 Aug 1942 struck 1946
YMS-88 South Coast Shipbuilding Newport Beach CA 136 320 5 May 1942 to the USSR 1945 as T-608
YMS-89 South Coast Shipbuilding Newport Beach CA 136 320 11 Jun 1942 struck 1946
YMS-90 South Coast Shipbuilding Newport Beach CA 136 320 24 Jul 1942 struck 1946
YMS-91 South Coast Shipbuilding Newport Beach CA 136 320 21 Aug 1942 sold 1946, as Marabell in British Columbia
YMS-92 South Coast Shipbuilding Newport Beach CA 136 320 24 Sep 1942 mined off Okinawa and lost 1945
YMS-93 South Coast Shipbuilding Newport Beach CA 136 320 21 Oct 1942 struck 1947
YMS-94 Stephens Bros./Colberg BW Stockton CA 136 320 11 Mar 1942 struck 1947
YMS-95 Stephens Bros./Colberg BW Stockton CA 136 320 12 Mar 1942 struck 1946
YMS-96 Stephens Bros./Colberg BW Stockton CA 136 320 11 Apr 1942 struck 1946
YMS-97 Stephens Bros./Colberg BW Stockton CA 136 320 11 Apr 1942 struck 1947
YMS-98 Stephens Bros./Colberg BW Stockton CA 136 320 23 Apr 1942 caught in a typhoon off Okinawa and lost 1945
YMS-99 Stephens Bros./Colberg BW Stockton CA 136 320 27 Apr 1942 struck 1946
YMS-100 Astoria Marine Astoria OR 136 320 20 Jun 1942 to the USSR 1945 as T602
YMS-101 Astoria Marine Astoria OR 136 320 17 Jul 1942 struck 1946
YMS-102 Astoria Marine Astoria OR 136 320 22 Aug 1942 struck 1947
YMS-103 Astoria Marine Astoria OR 136 320 19 Sep 1942 mined off Okinawa and lost 1945
YMS-104 Frank L. Sample Boothbay Harbor ME 136 320 29 May 1942 struck 1946
YMS-105 Frank L. Sample Boothbay Harbor ME 136 320 17 Jul 1942 struck 1946
YMS-106 Frank L. Sample Boothbay Harbor ME 136 320 18 Aug 1942 struck 1946
YMS-107 Burger boat Manitowoc WI 136 320 3 Aug 1942 struck 1946
YMS-108 Burger boat Manitowoc WI 136 320 24 Aug 1942 struck 1946
YMS-109 Burger boat Manitowoc WI 136 320 4 Sep 1942 reclassified 1947 as Brambling (AMS/MSCO 42), struck 1959, sold as Frances
YMS-110 Burger boat Manitowoc WI 136 320 10 Oct 1942 sold 1949 as fishing vessel Medina, deleted 1970
YMS-111 Burger boat Manitowoc WI 136 320 28 Oct 1942 struck 1946, in Canada as Western Challenger
YMS-112 Burger boat Manitowoc WI 136 320 24 Nov 1942 struck 1946
YMS-113 San Diego Marine San Diefo CA 136 320 12 Aug 1942 reclassified 1947 as Brant (AMS-43), struck 1959
YMS-114 San Diego Marine San Diefo CA 136 320 12 Aug 1942 reclassified 1947 as Courlan (AMS-44), struck 1959
YMS-115 San Diego Marine San Diefo CA 136 320 21 Sep 1942 struck 1946
YMS-116 San Diego Marine San Diefo CA 136 320 31 Oct 1942 struck 1946
YMS-117 Harbor Boatbuilding Terminal Island CA 136 320 11 Apr 1942 struck 1946, pilot boat Peacock
YMS-118 Harbor Boatbuilding Terminal Island CA 136 320 7 May 1942 struck 1946
YMS-119 Harbor Boatbuilding Terminal Island CA 136 320 11 Jun 1942 struck 1946
YMS-120 Harbor Boatbuilding Terminal Island CA 136 320 1 Aug 1942 reclassified 1947 as Crossbill (AMS-45), struck 1959
YMS-121 Kruse & Banks North Bend OR 136 320 22 Jul 1942 struck 1946
YMS-122 Kruse & Banks North Bend OR 136 320 24 Sep 1942 struck 1946, sold as Majorie Todd
YMS-123 Kruse & Banks North Bend OR 136 320 24 Aug 1942 sold 1946, as Uchuck III in British Columbia
YMS-124 Kruse & Banks North Bend OR 136 320 23 Oct 1942 star of the 1943 movie "Minesweeper", struck 1946
YMS-125 Martinac Shipbuilding Tacoma WA 136 320 25 Jul 1942 struck 1946
YMS-126 Martinac Shipbuilding Tacoma WA 136 320 11 Sep 1942 struck 1946
YMS-127 Martinac Shipbuilding Tacoma WA 136 320 30 Oct 1942 lost 1944
YMS-128 Martinac Shipbuilding Tacoma WA 136 320 10 Dec 1942 struck 1946
YMS-129 Tacoma boat Tacoma WA 136 320 17 Jul 1942 struck 1946
YMS-130 Tacoma boat Tacoma WA 136 320 27 Aug 1942 struck 1946
YMS-131 Tacoma boat Tacoma WA 136 320 1 Oct 1942 struck 1946
YMS-132 Tacoma boat Tacoma WA 136 320 10 Nov 1942 struck 1946
YMS-133 Western Boatbuilding Tacoma WA 136 320 21 Jul 1942 foundered in Coos Bay and lost 1943
YMS-134 Western Boatbuilding Tacoma WA 136 320 8 Sep 1942 struck 1946
YMS-135 Astoria Marine Astoria OR 136 320 20 Feb 1943 to the USSR 1945 as T-606
YMS-136 Astoria Marine Astoria OR 136 320 19 Mar 1943 later Egret (AMS-46), to Brazil 1960 as Jutai (M-14)
YMS-137 Astoria Marine Astoria OR 136 320 17 Apr 1943 to Britain 1943 as BYMS-2137, sold 1947 as Calisto
YMS-138 Astoria Marine Astoria OR 136 320 7 Jun 1943 to Thailand 1947 as Ladea, discarded
YMS-139 Astoria Marine Astoria OR 136 320 24 Jun 1943 to the USSR 1945 as T-594
YMS-140 Astoria Marine Astoria OR 136 320 12 Aug 1943 struck 1946, sold as Salvor, Salvage Queen, Clearwater
YMS-141 Astoria Marine Astoria OR 136 320 28 Aug 1943 to Britain 1943 as BYMS-2141, to Italy 1947 as Dalia
YMS-142 Astoria Marine Astoria OR 136 320 30 Sep 1943 to Britain 1943 as BYMS-2142, to Italy 1947 as Azalea
YMS-143 San Diego Marine San Diego CA 136 320 16 Feb 1943 to the USSR (T-522) 1945
YMS-144 San Diego Marine San Diego CA 136 320 17 Mar 1943 to the USSR (T-523) 1945
YMS-145 San Diego Marine San Diego CA 136 320 21 Apr 1943 to the USSR (T-524) 1945
YMS-146 San Diego Marine San Diego CA 136 320 23 Jun 1943 struck 1945
YMS-147 Western Boatbuilding Tacoma WA 136 320 26 Feb 1943 struck 1947
YMS-148 Western Boatbuilding Tacoma WA 136 320 15 May 1943 to Britain 1943 as BYMS-2148, to South Korea 1948 as YMS-516, mined and lost 1950
YMS-149 Western Boatbuilding Tacoma WA 136 320 14 Aug 1943 to Britain 1943 as BYMS-2149, to Egypt 1949 as Rafah, discarded 1970
YMS-150 Western Boatbuilding Tacoma WA 136 320 14 Aug 1943 to Britain 1943 as BYMS-2150, to Italy 1947 as Gardania, struck 1966
YMS-151 Campbell Machine San Diego CA 136 320 5 Oct 1943 caught in typhoon off Okinawa and lost 1945
YMS-152 Campbell Machine San Diego CA 136 320 26 Nov 1943 to Britain 1943 as BYMS-2152, to Greece 1946 as Kleio, struck 1967
YMS-153 Campbell Machine San Diego CA 136 320 23 Nov 1943 to Britain 1943 as BYMS-2153
YMS-154 Campbell Machine San Diego CA 136 320 1 Jan 1944 to Britain 1943 as BYMS-2154
YMS-155 Burger boat Manitowoc WI 136 320 11 Feb 1943 to Britain 1943 as BYMS-2155, to the Netherlands 1946 as Vliestroom (MV-37), sold 1965 as William R
YMS-156 Burger boat Manitowoc WI 136 320 13 Mar 1943 to Britain 1943 as BYMS-2156, J 956, to the Netherlands 1946 as Texelstroom (MV-39), scrapped 1976
YMS-157 Burger boat Manitowoc WI 136 320 15 Apr 1943 to Britain 1943 as BYMS-2157
YMS-158 Burger boat Manitowoc WI 136 320 28 May 1943 struck 1946
YMS-159 Burger boat Manitowoc WI 136 320 17 Jun 1943 struck 1946, barge VT-100; sunk at Bedwell Bay
YMS-160 Burger boat Manitowoc WI 136 320 19 Jul 1943 struck 1947
YMS-161 Burger boat Manitowoc WI 136 320 27 Jul 1943 to Britain 1943 as BYMS-2161
YMS-162 Burger boat Manitowoc WI 136 320 28 Aug 1943 to Britain 1943 as BYMS-2162
YMS-163 Dachel-Carter Shipbuilding Benton Harbor MI 136 320 8 Mar 1943 struck 1946
YMS-164 Dachel-Carter Shipbuilding Benton Harbor MI 136 320 27 Mar 1943 reclassified 1947 as Bobolink (AMS-2), converted 1955 to MHC-44, struck 1960
YMS-165 Dachel-Carter Shipbuilding Benton Harbor MI 136 320 3 Apr 1943 struck 1946
YMS-166 Dachel-Carter Shipbuilding Benton Harbor MI 136 320 27 May 1943 struck 1946
YMS-167 Dachel-Carter Shipbuilding Benton Harbor MI 136 320 31 Jul 1943 to Britain 1943 as BYMS-2167, sold 1948 as Rospiggen Norway, sank 1975
YMS-168 Dachel-Carter Shipbuilding Benton Harbor MI 136 320 29 Aug 1943 to Britain 1943 as BYMS-2168
YMS-169 Dachel-Carter Shipbuilding Benton Harbor MI 136 320 19 Jun 1943 to France 1944 as Amarante (D-301), discarded 1961
YMS-170 Dachel-Carter Shipbuilding Benton Harbor MI 136 320 10 Jul 1943 reclassified 1947 as Bunting (AMS-3), converted 1955 to MHC-45, struck 1960
YMS-171 Henry C. Grebe & Co. Chicago IL 136 320 29 Mar 1943 to Britain 1943 as BYMS-2171, to Greece 1946 as Kefallinia, struck 1966
YMS-172 Henry C. Grebe & Co. Chicago IL 136 320 17 Apr 1943 to Britain 1943 as BYMS-2172, to Greece 1946 as Kerkyra, struck 1960
YMS-173 Henry C. Grebe & Co. Chicago IL 136 320 1 May 1943 to Britain 1943 as BYMS-2173, Ebeneser 1954, sank 1983
YMS-174 Henry C. Grebe & Co. Chicago IL 136 320 22 May 1943 to Britain 1943 as BYMS-2174
YMS-175 Henry C. Grebe & Co. Chicago IL 136 320 5 Jun 1943 to Britain 1943 as BYMS-2175, to Egypt 1949 as Gaza, to Algeria 1962 as Djebel Aures, wrecked 1963
YMS-176 Henry C. Grebe & Co. Chicago IL 136 320 10 Jul 1943 struck 1946
YMS-177 Henry C. Grebe & Co. Chicago IL 136 320 18 Jul 1943 struck 1946
YMS-178 Henry C. Grebe & Co. Chicago IL 136 320 27 Jul 1943 to the USSR (T-588) 1945
YMS-179 Henry C. Grebe & Co. Chicago IL 136 320 14 Aug 1943 reclassified 1947 as Cardinal (AMS-4), to Brazil 1960 as Javari (M-11), scrapped 1970
YMS-180 Henry C. Grebe & Co. Chicago IL 136 320 28 Aug 1943 to the USSR (T-609) 1945
YMS-181 Henry C. Grebe & Co. Chicago IL 136 320 12 Sep 1943 to Britain 1943 as BYMS-2181
YMS-182 Henry C. Grebe & Co. Chicago IL 136 320 25 Sep 1943 to Britain 1943 as BYMS-2182, to Greece 1946 as Lambadias, struck 1968
YMS-183 Greenport Basin Greenport NY 136 320 14 Jan 1943 struck 1947, Hansons Landing (shop) Coos Bay OR.
YMS-184 Greenport Basin Greenport NY 136 320 25 Jan 1943 to the USSR (T-595) 1945
YMS-185 Greenport Basin Greenport NY 136 320 9 Feb 1943 to Britain 1943 as BYMS-2185, to Greece 1946 as Afroessa, struck 1973
YMS-186 Greenport Basin Greenport NY 136 320 20 Feb 1943 to Britain 1943 as BYMS-2186, to Greece 1946 as Leros, struck 1966
YMS-187 Greenport Basin Greenport NY 136 320 12 Mar 1943 to Britain 1943 as BYMS-2187; sold 1947 as Lord Strickland
YMS-188 Greenport Basin Greenport NY 136 320 30 Mar 1943 to Britain 1943 as BYMS-2188, to the Netherlands 1946 as Volkerak (M-838), struck 1957
YMS-189 Greenport Basin Greenport NY 136 320 1 May 1943 to Britain 1943 as BYMS-2189
YMS-190 Greenport Basin Greenport NY 136 320 15 May 1943 to Britain 1943 as BYMS-2190, to Greece 1946 as Simi, struck 1966
YMS-191 Greenport Basin Greenport NY 136 320 1 Jun 1943 to Britain 1943 as BYMS-2191, to Greece 1946 as Kos, mined in the Gulf of Athens and lost 1944
YMS-192 Greenport Basin Greenport NY 136 320 13 Jun 1943 reclassified 1947 as Condor (AMS-5), to Japan 1955 as Ujishima, sunk as target 1968
YMS-193 Greenport Basin Greenport NY 136 320 28 Jun 1943 reclassified 1947 as Fulmar (AMS-47)
YMS-194 Greenport Basin Greenport NY 136 320 11 Jul 1943 to Britain 1943 as BYMS-2194, to Italy 1947 as Tulipano, struck 1966
YMS-195 Hiltebrant Dry Dock Kingston NY 136 320 20 Mar 1943 reclassified 1945 as Chauvenet (AGS-11), sold private 1947, sank 1963
YMS-196 Hiltebrant Dry Dock Kingston NY 136 320 14 Apr 1943 struck 1946
YMS-197 Hiltebrant Dry Dock Kingston NY 136 320 6 May 1943 to Britain 1943 as BYMS-2197, struck 1946
YMS-198 Hiltebrant Dry Dock Kingston NY 136 320 29 May 1943 struck 1946
YMS-199 Hiltebrant Dry Dock Kingston NY 136 320 19 Jun 1943 struck 1946
YMS-200 Hiltebrant Dry Dock Kingston NY 136 320 5 Jul 1943 struck 1946, transferred to China
YMS-201 Hiltebrant Dry Dock Kingston NY 136 320 24 Jul 1943 reclassified 1947 as Courser (AMS-6)
YMS-202 Hiltebrant Dry Dock Kingston NY 136 320 11 Aug 1943 to Britain 1943 as BYMS-2202
YMS-203 Hiltebrant Dry Dock Kingston NY 136 320 31 Aug 1943 to Britain 1943 as BYMS-2203
YMS-204 Hiltebrant Dry Dock Kingston NY 136 320 14 Sep 1943 to Britain 1943 as BYMS-2204
YMS-205 Hiltebrant Dry Dock Kingston NY 136 320 29 Sep 1943 to Britain 1943 as BYMS-2205
YMS-206 Hiltebrant Dry Dock Kingston NY 136 320 16 Oct 1943 to Britain 1943 as BYMS-2206, to Italy 1947 as Magnolia, struck 1966
YMS-207 Robert Jacob City Island NY 136 320 18 Jan 1943 to Britain 1943 as BYMS-2207, to France 1944 as Petunia (D-354), decommissioned 1961
YMS-208 Robert Jacob City Island NY 136 320 20 Feb 1943 to Britain 1943 as BYMS-2208, to France 1944 as Genet (D-355), decommissioned 1961
YMS-209 Robert Jacob City Island NY 136 320 24 Mar 1943 to Britain 1943 as BYMS-2209, to Greece 1946 as Zakynthos, struck 1973
YMS-210 Robert Jacob City Island NY 136 320 19 Apr 1943 to Britain 1943 as BYMS-2210, to the Netherlands 1946 as Borndiep (A-905), struck 1962
YMS-211 Robert Jacob City Island NY 136 320 17 May 1943 to Britain 1943 as BYMS-2211, to Poland 1948 as Delfin, wrecked 1957
YMS-212 Robert Jacob City Island NY 136 320 29 May 1943 to Britain 1943 as BYMS-2212, to Egypt 1949 as Kordofan, discarded 1970
YMS-213 Robert Jacob City Island NY 136 320 17 Jun 1943 to Britain 1943 as BYMS-2213, to Germany 1960 as Adolf Bestelmeyer
YMS-214 Robert Jacob City Island NY 136 320 2 Jul 1943 to Britain 1943 as BYMS-2214
YMS-215 Robert Jacob City Island NY 136 320 22 Jul 1943 reclassified 1947 as Crow (AMS-7)
YMS-216 Martinac Shipbuilding Tacoma WA 136 320 26 Feb 1943 to the USSR 1945
YMS-217 Martinac Shipbuilding Tacoma WA 136 320 29 Apr 1943 to Britain 1943 as BYMS-2217
YMS-218 Martinac Shipbuilding Tacoma WA 136 320 23 Jun 1943 reclassified 1947 as Curlew (AMS-8), to South Korea 1948 as Kum Hwa (MSCO 519), struck 1977
YMS-219 Martinac Shipbuilding Tacoma WA 136 320 20 Jul 1943 reclassified 1947 as Flicker (AMS-9)
YMS-220 Martinac Shipbuilding Tacoma WA 136 320 30 Aug 1943 struck 1946
YMS-221 Martinac Shipbuilding Tacoma WA 136 320 16 Sep 1943 to Britain 1943 as BYMS-2221, to Greece 1946 as Pigassos, struck 1968
YMS-222 Mojean & Ericson Tacoma WA 136 320 20 Apr 1943 struck 1946
YMS-223 Mojean & Ericson Tacoma WA 136 320 5 Apr 1943 to Britain 1943 as BYMS-2223
YMS-224 Mojean & Ericson Tacoma WA 136 320 19 Aug 1943 struck 1946
YMS-225 Mojean & Ericson Tacoma WA 136 320 10 Oct 1943 to Britain 1943 as BYMS-2225
YMS-226 Frank L. Sample Boothbay Harbor ME 136 320 16 Jan 1943 to Britain 1943 as BYMS-2226, to France 1944 as Asphodele (D-314), decommissioned 1969
YMS-227 Frank L. Sample Boothbay Harbor ME 136 320 20 Mar 1943 to France 1944 as Zinnia (D-273), decommissioned 1961
YMS-228 Frank L. Sample Boothbay Harbor ME 136 320 5 May 1943 to Turkey 1947 as Kemer, struck 1966
YMS-229 Frank L. Sample Boothbay Harbor ME 136 320 5 Jun 1943 to Britain 1943 as BYMS-2229, to Greece 1946 as Patmos, struck 1966
YMS-230 Frank L. Sample Boothbay Harbor ME 136 320 6 Jul 1943 to Britain 1943 as BYMS-2230, to the Netherlands 1946 as Oosterschelde (M-835), struck 1957
YMS-231 Frank L. Sample Boothbay Harbor ME 136 320 6 Aug 1943 reclassified 1947 as Firecrest (AMS-10), to Japan 1955 as Etajima (MSCO 10), sunk as target 1968
YMS-232 Frank L. Sample Boothbay Harbor ME 136 320 7 Sep 1943 to Britain 1943 as BYMS-2232
YMS-233 Frank L. Sample Boothbay Harbor ME 136 320 8 Oct 1943 to Britain 1943 as BYMS-2233
YMS-234 Frank L. Sample Boothbay Harbor ME 136 320 1 Nov 1943 to Britain 1943 as BYMS-2234
YMS-235 Stadium Yacht Basin Cleveland OH 136 320 20 Jul 1943 struck 1946
YMS-236 Stadium Yacht Basin Cleveland OH 136 320 23 Jun 1943 to Britain 1943 as BYMS-2236
YMS-237 Stadium Yacht Basin Cleveland OH 136 320 20 Nov 1942 to the USSR (T-589) 1945
YMS-238 Stadium Yacht Basin Cleveland OH 136 320 23 Nov 1942 reclassified 1947 as Flamingo (AMS-11)
YMS-239 Stadium Yacht Basin Cleveland OH 136 320 16 Apr 1943 to Turkey 1947 as Kerempe, struck 1966
YMS-240 Stadium Yacht Basin Cleveland OH 136 320 25 May 1943 to Britain 1943 as BYMS-2240, to Greece 1946 as Ithaki, struck 1966
YMS-241 Tacoma boat Tacoma WA 136 320 18 Feb 1943 to the USSR (T-591) 1945
YMS-242 Tacoma boat Tacoma WA 136 320 27 Mar 1943 reclassified 1945 as Harkness (AGS-2), sold private 1960
YMS-243 Tacoma boat Tacoma WA 136 320 10 May 1943 struck 1946
YMS-244 Tacoma boat Tacoma WA 136 320 3 Jul 1943 to Britain 1943 as BYMS-2244
YMS-245 Tacoma boat Tacoma WA 136 320 26 Jul 1943 to South Korea 1948 as Kang Wha, sunk 1959
YMS-246 Tacoma boat Tacoma WA 136 320 26 Aug 1943 to Britain 1943 as BYMS-2246
YMS-247 Weaver Shipyard Orange TX 136 320 13 May 1943 to Britain 1943 as BYMS-2247
YMS-248 Weaver Shipyard Orange TX 136 320 2 Jun 1943 struck 1946
YMS-249 Weaver Shipyard Orange TX 136 320 28 Jun 1943 struck 1946
YMS-250 Weaver Shipyard Orange TX 136 320 30 Jul 1943 struck 1946
YMS-251 Weaver Shipyard Orange TX 136 320 30 Aug 1943 struck 1946
YMS-252 Weaver Shipyard Orange TX 136 320 29 Sep 1943 to Britain 1943 as BYMS-2252, to Greece 1946 as Thalia, struck 1967 and sold
YMS-253 Weaver Shipyard Orange TX 136 320 21 Oct 1943 to Britain 1943 as BYMS-2253
YMS-254 Weaver Shipyard Orange TX 136 320 11 Nov 1943 to Britain 1943 as BYMS-2254, to the Netherlands 1946 as Deurloo (A-921), struck 1962
YMS-255 Weaver Shipyard Orange TX 136 320 29 Nov 1943 to Britain 1943 as BYMS-2255, mined near Boulogne and lost 1944
YMS-256 Weaver Shipyard Orange TX 136 320 20 Dec 1943 to Britain 1943 as BYMS-2256
YMS-257 Weaver Shipyard Orange TX 136 320 19 Jan 1943 to Britain 1943 as BYMS-2257, to Poland 1948 as Foka, struck 1955
YMS-258 Weaver Shipyard Orange TX 136 320 8 Feb 1944 to Britain 1944 as BYMS-2258, to South Korea 1948 as Kim Chon, scrapped 1968
YMS-259 South Coast Shipbuilding Newport Beach CA 136 320 5 Mar 1943 struck 1946
YMS-260 South Coast Shipbuilding Newport Beach CA 136 320 9 Apr 1943 to the USSR (T-527) 1945
YMS-261 South Coast Shipbuilding Newport Beach CA 136 320 8 Jul 1943 to Britain 1943 as BYMS-2261, to Greece 1946 as Andromeda, struck 1967
YMS-262 South Coast Shipbuilding Newport Beach CA 136 320 11 Aug 1943 reclassified 1945 as James M. Gillis (AGS-13), sold private 1960
YMS-263 South Coast Shipbuilding Newport Beach CA 136 320 10 Sep 1943 reclassified 1945 as Simon Newcomb (AGS-14), scrapped 1950
YMS-264 South Coast Shipbuilding Newport Beach CA 136 320 26 Oct 1943 to Britain 1943 as BYMS-2264
YMS-265 Kruse & Banks North Bend OR 136 320 6 Mar 1943 struck 1946
YMS-266 Kruse & Banks North Bend OR 136 320 8 Apr 1943 to the USSR (T-601) 1945
YMS-267 Kruse & Banks North Bend OR 136 320 21 Jun 1943 struck 1946
YMS-268 Kruse & Banks North Bend OR 136 320 28 Jun 1943 reclassified 1947 as Lapwing (AMS-48), struck 1959
YMS-269 Bellingham Iron Works Bellingham WA 136 320 23 Feb 1943 struck 1946
YMS-270 Bellingham Iron Works Bellingham WA 136 320 25 Mar 1943 struck 1946
YMS-271 Bellingham Iron Works Bellingham WA 136 320 21 Apr 1943 reclassified 1947 as Lorikeet (AMS-49), scrapped 1968
YMS-272 Bellingham Iron Works Bellingham WA 136 320 28 May 1943 to the USSR (T-597) 1945
YMS-273 Bellingham Iron Works Bellingham WA 136 320 7 Jul 1943 to the USSR (T-598) 1945
YMS-274 Bellingham Iron Works Bellingham WA 136 320 29 Jul 1943 struck 1946
YMS-275 Bellingham Iron Works Bellingham WA 136 320 20 Aug 1943 lost 1945
YMS-276 Bellingham Iron Works Bellingham WA 136 320 22 Sep 1943 struck 1946
YMS-277 Martinac Shipbuilding Tacoma WA 136 320 18 Oct 1943 to Britain 1943 as BYMS-2277, to Italy 1947 as Fiordaliso, struck 1966
YMS-278 Martinac Shipbuilding Tacoma WA 136 320 12 Nov 1943 to Britain 1943 as BYMS-2278, to Italy 1947 as Primula, struck 1966
YMS-279 Henry C. Grebe & Co. Chicago IL 136 320 2 Oct 1943 to Britain 1943 as BYMS-2279, sold 1946, Rudolf Diesel 1960, still active in the Netherlands
YMS-280 Henry C. Grebe & Co. Chicago IL 136 320 16 Oct 1943 to Britain 1943 as BYMS-2280, to Italy 1947 as Verbena, struck 1966
YMS-281 San Diego Marine San Diego CA 136 320 28 Jul 1943 struck 1946
YMS-282 San Diego Marine San Diego CA 136 320 26 Aug 1943 to Britain 1943 as BYMS-2282, to Poland 1948 as Mors, struck 1957
YMS-283 San Diego Marine San Diego CA 136 320 21 Sep 1943 struck 1946, sold 1963 as Yankee Trader, stranded 1973 in San Pedro CA
YMS-284 San Diego Marine San Diego CA 136 320 29 Oct 1943 to Britain 1943 as BYMS-2284, struck 1946
YMS-285 Northwestern Shipbuilding Bellingham WA 136 320 26 Jun 1943 to the USSR (T-610) 1945
YMS-286 Northwestern Shipbuilding Bellingham WA 136 320 27 Jul 1943 struck 1946
YMS-287 Associated Shipbuilders Seattle WA 136 320 15 Mar 1943 to the USSR (T-611) 1945
YMS-288 Associated Shipbuilders Seattle WA 136 320 19 Mar 1943 to the USSR (T-600) 1945, sunk as target
YMS-289 Associated Shipbuilders Seattle WA 136 320 14 Jun 1943 to Turkey 1947 as Kilimi, struck 1963
YMS-290 Associated Shipbuilders Seattle WA 136 320 17 Jul 1943 reclassified 1947 as Nightingale (AMS-50), struck 1959
YMS-291 Associated Shipbuilders Seattle WA 136 320 9 Aug 1943 reclassified 1947 as Reedbird (AMS-51), struck 1968
YMS-292 Associated Shipbuilders Seattle WA 136 320 9 Oct 1943 struck 1946, Crest (survey vessel)
YMS-293 Associated Shipbuilders Seattle WA 136 320 12 Oct 1943 struck 1946
YMS-294 Associated Shipbuilders Seattle WA 136 320 9 Nov 1943 reclassified 1947 as Redpoll (AMS-57), converted 1960 to research ship Sir Horace Lamb for Columbia University
YMS-295 Associated Shipbuilders Seattle WA 136 320 9 Nov 1943 to the USSR (T-599) 1945
YMS-296 Associated Shipbuilders Seattle WA 136 320 31 Dec 1943 struck 1946
YMS-297 Tacoma boat Tacoma WA 136 320 20 Sep 1943 struck 1946
YMS-298 Tacoma boat Tacoma WA 136 320 22 Oct 1943 sold 1946 as Vaitia, Tuamotu, sunk in Tahiti 1958
YMS-299 William F. Stone Oakland CA 136 320 7 Apr 1943 reclassified 1947 as Rhea (AMS-52), sold 1960, sea cadet training ship in Port Stanley ON, scrapped 1997
YMS-300 William F. Stone Oakland CA 136 320 3 Jul 1943 struck 1946
YMS-301 William F. Stone Oakland CA 136 320 11 Sep 1943 to the USSR (T-605) 1945
YMS-302 William F. Stone Oakland CA 136 320 5 Nov 1943 struck 1948
YMS-303 Rice Brothers East Boothbay ME 136 320 11 Aug 1943 struck 1946
YMS-304 Rice Brothers East Boothbay ME 136 320 1 Oct 1943 mined off Normandy and lost 1944
YMS-305 Rice Brothers East Boothbay ME 136 320 17 Nov 1943 to Norway 1945 as Gaula (M-318)
YMS-306 Rice Brothers East Boothbay ME 136 320 18 Jan 1944 reclassified 1947 as Goldfinch (AMS-12), to Maine VoTech Inst. 1960
YMS-307 Rice Brothers East Boothbay ME 136 320 24 Feb 1944 to Turkey 1947 as Kirte, struck 1966
YMS-308 Henry B. Nevins City Island NY 136 320 27 Jul 1943 struck 1946
YMS-309 Henry B. Nevins City Island NY 136 320 13 Sep 1943 struck 1946
YMS-310 Henry B. Nevins City Island NY 136 320 1 Oct 1943 struck 1946
YMS-311 Henry B. Nevins City Island NY 136 320 5 Nov 1943 reclassified 1947 as Robin (AMS-53), struck 1961
YMS-312 Henry B. Nevins City Island NY 136 320 4 Dec 1943 reclassified 1947 as Grackle (AMS-13), to Brazil 1965 as Jurvena (M-13), struck 1974
YMS-313 Harbor Boatbuilding Terminal Island CA 136 320 12 Jun 1943 struck 1946
YMS-314 Harbor Boatbuilding Terminal Island CA 136 320 15 Jul 1943 struck 1946
YMS-315 Harbor Boatbuilding Terminal Island CA 136 320 16 Aug 1943 struck 1946
YMS-316 Harbor Boatbuilding Terminal Island CA 136 320 25 Aug 1943 struck 1946
YMS-317 South Coast Shipbuilding Newport Beach CA 136 320 18 Nov 1943 reclassified 1947 as Grosbeak (AMS-14), struck 1959
YMS-318 South Coast Shipbuilding Newport Beach CA 136 320 30 Dec 1943 struck 1946
YMS-319 South Coast Shipbuilding Newport Beach CA 136 320 4 Feb 1944 struck 1946
YMS-320 Al Larson Boat Shop San Pedro CA 136 320 18 Aug 1943 struck 1946
YMS-321 Al Larson Boat Shop San Pedro CA 136 320 25 Oct 1943 reclassified 1947 as Grouse (AMS-15), wrecked off Rockport and lost 1963
YMS-322 Al Larson Boat Shop San Pedro CA 136 320 19 Nov 1943 struck 1946, pilot boat Golden Gate
YMS-323 Al Larson Boat Shop San Pedro CA 136 320 27 Dec 1943 to South Korea 1948 as Ku Po, scrapped 1956
YMS-324 Al Larson Boat Shop San Pedro CA 136 320 28 Feb 1944 reclassified 1947 as Gull (AMS-16), struck 1959
YMS-325 Al Larson Boat Shop San Pedro CA 136 320 7 Apr 1944 struck 1946
YMS-326 Ballard Marine Railway Seattle WA 136 320 15 Mar 1943 struck 1946
YMS-327 Ballard Marine Railway Seattle WA 136 320 19 Apr 1943 reclassified 1947 as Ruff (AMS-54), sold private 1959
YMS-328 Ballard Marine Railway Seattle WA 136 320 26 May 1943 struck 1946, sold 1946, sold to John Wayne 1965 as Wild Goose, cruise boat in Newport Beach CA
YMS-329 Ballard Marine Railway Seattle WA 136 320 3 Jul 1943 struck 1946
YMS-330 Ballard Marine Railway Seattle WA 136 320 6 Aug 1943 to South Korea 1948 as Kang Kyong, scrapped 1963
YMS-331 Ballard Marine Railway Seattle WA 136 320 10 Sep 1943 struck 1946, abandoned in Powell River BC
YMS-332 Ballard Marine Railway Seattle WA 136 320 12 Oct 1943 to the USSR (T-607) 1945
YMS-333 Ballard Marine Railway Seattle WA 136 320 2 Dec 1943 struck 1946
YMS-334 Seattle Shipbuilding Seattle WA 136 320 1 Mar 1943 to Thailand 1947 as Bangkeo, discarded
YMS-335 Seattle Shipbuilding Seattle WA 136 320 9 Apr 1943 to the Philippines 1948
YMS-336 Seattle Shipbuilding Seattle WA 136 320 24 May 1943 struck 1946
YMS-337 Seattle Shipbuilding Seattle WA 136 320 9 Jul 1943 struck 1946
YMS-338 Seattle Shipbuilding Seattle WA 136 320 12 Aug 1943 struck 1946
YMS-339 Seattle Shipbuilding Seattle WA 136 320 25 Sep 1943 to China 1948, struck 1963
YMS-340 Seattle Shipbuilding Seattle WA 136 320 30 Oct 1943 sold private 1947
YMS-341 Seattle Shipbuilding Seattle WA 136 320 11 Dec 1943 struck 1946
YMS-342 Bellingham Iron Works Bellingham WA 136 320 16 Oct 1943 struck 1946
YMS-343 Bellingham Iron Works Bellingham WA 136 320 11 Nov 1943 struck 1946
YMS-344 Bellingham Iron Works Bellingham WA 136 320 reclassified 1947 as YDG-6
YMS-345 Bellingham Iron Works Bellingham WA 136 320 11 Dec 1943 struck 1946
YMS-346 Gibbs Gas Engine Jacksonville FL 136 320 16 Aug 1943 to China 1948, struck 1976
YMS-347 Gibbs Gas Engine Jacksonville FL 136 320 24 Aug 1943 struck 1946
YMS-348 Gibbs Gas Engine Jacksonville FL 136 320 8 Sep 1943 to Turkey 1947 as Kozlu, struck 1965
YMS-349 Gibbs Gas Engine Jacksonville FL 136 320 16 Sep 1943 struck 1946
YMS-350 Gibbs Gas Engine Jacksonville FL 136 320 27 Sep 1943 mined off Normandy and lost 1944
YMS-351 Gibbs Gas Engine Jacksonville FL 136 320 9 Oct 1943 struck 1946
YMS-352 Gibbs Gas Engine Jacksonville FL 136 320 21 Oct 1943 struck 1946
YMS-353 Gibbs Gas Engine Jacksonville FL 136 320 9 Nov 1943 to Thailand 1947, discarded
YMS-354 Gibbs Gas Engine Jacksonville FL 136 320 15 Nov 1943 to South Korea 1947 as Kang Jim, scrapped 1959
YMS-355 Gibbs Gas Engine Jacksonville FL 136 320 27 Nov 1943 struck 1946
YMS-356 Gibbs Gas Engine Jacksonville FL 136 320 10 Dec 1943 to South Korea 1946 as Kim Hae
YMS-357 Gibbs Gas Engine Jacksonville FL 136 320 27 Dec 1943 struck 1946
YMS-358 Robert Jacob City Island NY 136 320 6 Aug 1943 to South Korea 1947 as Kyoung Chu, scrapped 1962
YMS-359 Robert Jacob City Island NY 136 320 20 Aug 1943 sold private 1947, sunk in Lake Union
YMS-360 Robert Jacob City Island NY 136 320 3 Sep 1943 struck 1946
YMS-361 Robert Jacob City Island NY 136 320 17 Sep 1943 struck 1946
YMS-362 Robert Jacob City Island NY 136 320 30 Sep 1943 reclassified 1947 as Hawk (AMS-17), struck 1957
YMS-363 Wheeler Shipbuilding Whitestone NY 136 320 12 Aug 1943 struck 1946
YMS-364 Wheeler Shipbuilding Whitestone NY 136 320 21 Aug 1943 struck 1946
YMS-365 Wheeler Shipbuilding Whitestone NY 136 320 28 Aug 1943 mined off Borneo and lost 1945
YMS-366 Wheeler Shipbuilding Whitestone NY 136 320 7 Sep 1943 struck 1946
YMS-367 Wheeler Shipbuilding Whitestone NY 136 320 20 Sep 1943 to China 1948, struck 1976
YMS-368 Wheeler Shipbuilding Whitestone NY 136 320 27 Sep 1943 struck 1946
YMS-369 Wheeler Shipbuilding Whitestone NY 136 320 9 Oct 1943 reclassified 1947 as Heron (AMS-18), to Japan 1955 as Nuwajima (MCS-657), sunk as target 1967
YMS-370 Wheeler Shipbuilding Whitestone NY 136 320 19 Oct 1943 struck 1946
YMS-371 Weaver Shipyard Orange TX 136 320 29 Feb 1944 reclassified 1947 as Hornbill (AMS-19), sold private 1960
YMS-372 Weaver Shipyard Orange TX 136 320 28 Mar 1944 reclassified 1947 as Hummer (AMS-20), to Japan 1955 as Ninoshima (MCS-662)
YMS-373 Weaver Shipyard Orange TX 136 320 28 Apr 1944 reclassified 1947 as Jackdaw (AMS-21), to Brazil 1960 as Jurua (M-12), struck 1969
YMS-374 Weaver Shipyard Orange TX 136 320 31 May 1944 reclassified 1947 as Kite (AMS-22), to South Korea 1947 as Kim Po (MSCO 520), struck 1977
YMS-375 Greenport Basin Greenport NY 136 320 26 Jul 1943 to Turkey 1947 as Kulluk, struck 1966
YMS-376 Greenport Basin Greenport NY 136 320 9 Aug 1943 reclassified 1947 as Lark (AMS-23), to Japan 1955 as Ninoshima (MCS-262)
YMS-377 Greenport Basin Greenport NY 136 320 23 Aug 1943 to Norway 1945
YMS-378 Greenport Basin Greenport NY 136 320 7 Sep 1943 mined off Normandy and lost 1944
YMS-379 Greenport Basin Greenport NY 136 320 27 Sep 1943 to Norway 1945 as Hessa
YMS-380 Greenport Basin Greenport NY 136 320 11 Oct 1943 to Norway 1945 as Hitra
YMS-381 Greenport Basin Greenport NY 136 320 30 Oct 1943 to Norway 1945 as Vigra
YMS-382 Greenport Basin Greenport NY 136 320 18 Nov 1943 to Norway 1945, torpedoed in the English Channel and lost, 7 May 1945
YMS-383 Colberg Boat Works Stockton CA 136 320 24 Feb 1943 struck 1946
YMS-384 Colberg Boat Works Stockton CA 136 320 9 Apr 1943 struck 1946
YMS-385 Colberg Boat Works Stockton CA 136 320 30 Apr 1943 struck 1946
YMS-386 Colberg Boat Works Stockton CA 136 320 23 Jul 1943 struck 1946
YMS-387 Colberg Boat Works Stockton CA 136 320 17 Aug 1943 sold private 1946
YMS-388 Colberg Boat Works Stockton CA 136 320 24 Sep 1943 struck 1946
YMS-389 Stadium Yacht Basin Cleveland OH 136 320 15 Aug 1943 struck 1946
YMS-390 Stadium Yacht Basin Cleveland OH 136 320 30 Aug 1943 sold private 1946
YMS-391 Stadium Yacht Basin Cleveland OH 136 320 19 Sep 1943 struck 1946
YMS-392 Stadium Yacht Basin Cleveland OH 136 320 11 Oct 1943 to South Korea 1947 as Kang Kae
YMS-393 Harbor Boatbuilding Terminal Island CA 136 320 14 Sep 1943 to China 1948, struck 1976
YMS-394 Harbor Boatbuilding Terminal Island CA 136 320 22 Oct 1943 struck 1946
YMS-395 Harbor Boatbuilding Terminal Island CA 136 320 19 Nov 1943 reclassified 1947 as Linnet (AMS-24), struck 1968
YMS-396 Harbor Boatbuilding Terminal Island CA 136 320 11 Jan 1943 struck 1946
YMS-397 Henry B. Nevins City Island NY 136 320 25 Jan 1943 struck 1946
YMS-398 Henry B. Nevins City Island NY 136 320 13 Mar 1943 struck 1946
YMS-399 Henry B. Nevins City Island NY 136 320 9 Apr 1943 struck 1946
YMS-400 Henry B. Nevins City Island NY 136 320 14 May 1943 reclassified 1947 as Magpie (AMS-25), mined off Chuksan and lost 1950
YMS-401 Henry B. Nevins City Island NY 136 320 4 Jun 1943 struck 1946
YMS-402 Henry B. Nevins City Island NY 136 320 25 Jun 1943 reclassified 1947 as Seagull (AMS-55), struck 1959, sold as Little River
YMS-403 Henry B. Nevins City Island NY 136 320 struck 1946
YMS-404 Henry B. Nevins City Island NY 136 320 6 Aug 1943 sold private 1947
YMS-405 Henry C. Grebe & Co. Chicago IL 136 320 8 Nov 1943 struck 1946
YMS-406 Henry C. Grebe & Co. Chicago IL 136 320 20 Nov 1943 to Norway 1945
YMS-407 Henry C. Grebe & Co. Chicago IL 136 320 8 Dec 1943 struck 1946
YMS-408 Henry C. Grebe & Co. Chicago IL 136 320 18 Dec 1943 sold 1946, burned and lost in the 1980s
YMS-409 Henry C. Grebe & Co. Chicago IL 136 320 1 Jan 1944 foundered in the North Atlantic and lost 1944
YMS-410 Bellingham Iron Works Bellingham WA 136 320 18 Sep 1944 struck 1946
YMS-411 Bellingham Iron Works Bellingham WA 136 320 9 Aug 1944 to the Philippines 1947
YMS-412 Bellingham Iron Works Bellingham WA 136 320 16 Sep 1944 struck 1946
YMS-413 Bellingham Iron Works Bellingham WA 136 320 26 Oct 1944 to South Korea 1948 as Kwang Chu, struck 1972
YMS-414 Stadium Yacht Basin Cleveland OH 136 320 6 Sep 1944 struck 1946
YMS-415 Stadium Yacht Basin Cleveland OH 136 320 1 Oct 1944 reclassified 1947 as Chatterer (AMS-40), to Japan 1955 as Yurishima (MSC-661), scrapped 1969
YMS-416 Stadium Yacht Basin Cleveland OH 136 320 21 Oct 1944 struck 1946
YMS-417 Stadium Yacht Basin Cleveland OH 136 320 10 Nov 1944 reclassified 1947 as Merganser (AMS-26), Miss Juanita, scrapped 1960
YMS-418 Henry C. Grebe & Co. Chicago IL 136 320 21 Sep 1944 struck 1946
YMS-419 Henry C. Grebe & Co. Chicago IL 136 320 28 Oct 1944 reclassified 1947 as Mockingbird (AMS-27), to South Korea 1956 as Ko Chang (MSC-521), struck 1977
YMS-420 Henry C. Grebe & Co. Chicago IL 136 320 5 Feb 1945 to Canada 1951 as HMCS Cordova (MCA-158), scrapped 1957
YMS-421 Henry C. Grebe & Co. Chicago IL 136 320 3 Mar 1945 lost 1946
YMS-422 Astoria Marine Astoria OR 136 320 27 Sep 1944 reclassified 1947 as Osprey (AMS-28), to Japan 1955 as Yakushima (YTE 10)
YMS-423 Astoria Marine Astoria OR 136 320 25 Oct 1944 to South Korea 1948 as Kaya San, sunk 1949
YMS-424 Astoria Marine Astoria OR 136 320 24 Nov 1944 lost 1945
YMS-425 Astoria Marine Astoria OR 136 320 21 Dec 1944 reclassified 1947 as Siskin (AMS-58), scrapped 1968
YMS-426 Mojean & Ericson Tacoma WA 136 320 25 Sep 1944 struck 1946
YMS-427 Mojean & Ericson Tacoma WA 136 320 28 Nov 1944 struck 1946
YMS-428 Mojean & Ericson Tacoma WA 136 320 24 Jan 1945 to the USSR (T-525) 1945
YMS-429 Mojean & Ericson Tacoma WA 136 320 16 Mar 1945 sold 1947, wrecked in Everett WA and scrapped
YMS-430 Tacoma boat Tacoma WA 136 320 10 Oct 1944 reclassified 1947 as Ostrich (AMS-29), scrapped 1960
YMS-431 Tacoma boat Tacoma WA 136 320 13 Nov 1944 sold 1947 as Aleutian Mail, Ingram Bay, Sea Harvester I
YMS-432 Tacoma boat Tacoma WA 136 320 30 Dec 1944 sold 1948
YMS-433 Tacoma boat Tacoma WA 136 320 13 Feb 1945 to the Philippines 1946 as a patrol boat
YMS-434 Martinac Shipbuilding Tacoma WA 136 320 15 Nov 1944 reclassified 1947 as Parrakeet (AMS-30)
YMS-435 Martinac Shipbuilding Tacoma WA 136 320 5 Mar 1945 to the USSR (T-526) 1945
YMS-436 Martinac Shipbuilding Tacoma WA 136 320 31 May 1945 struck 1946
YMS-437 Martinac Shipbuilding Tacoma WA 136 320 25 Jul 1945 reclassified 1947 as Partridge (AMS-31), mined in Wonson Harbor and lost 1951
YMS-438 Robert Jacob City Island NY 136 320 25 Oct 1944 struck 1946
YMS-439 Robert Jacob City Island NY 136 320 18 Nov 1944 struck 1946, sold as La Ciencia, still afloat in Seattle WA
YMS-440 Robert Jacob City Island NY 136 320 29 Dec 1944 struck 1946
YMS-441 Robert Jacob City Island NY 136 320 20 Feb 1945 reclassified 1947 as Pelican (AMS-32), struck 1968
YMS-442 Hiltebrant Dry Dock Kingston NY 136 320 13 Oct 1944 reclassified 1947 as Plover (AMS-33)
YMS-443 Hiltebrant Dry Dock Kingston NY 136 320 14 Nov 1944 reclassified 1947 as Redhead (AMS-34), struck 1959
YMS-444 Hiltebrant Dry Dock Kingston NY 136 320 21 Dec 1944 reclassified 1947 as Turkey (AMS-56), sold private 1969
YMS-445 Hiltebrant Dry Dock Kingston NY 136 320 20 Mar 1945 struck 1946
YMS-446 Robert Jacob City Island NY 136 320 6 Aug 1944 reclassified 1947 as Sanderling (AMS-35), struck 1959
YMS-447 Robert Jacob City Island NY 136 320 28 Jun 1944 to the USSR (T-181) 1945
YMS-448 Robert Jacob City Island NY 136 320 25 Jul 1944 to the USSR (T-185) 1945
YMS-449 South Coast Shipbuilding Newport Beach CA 136 320 7 Jul 1944 sold 1947
YMS-450 South Coast Shipbuilding Newport Beach CA 136 320 25 Nov 1944 to the Philippines 1948 as Tarlac (P-11), scrapped 1969
YMS-451 South Coast Shipbuilding Newport Beach CA 136 320 26 Dec 1944 reclassified 1947 as AMS-59
YMS-452 South Coast Shipbuilding Newport Beach CA 136 320 13 Feb 1945 struck 1946
YMS-453 Greenport Basin Greenport NY 136 320 27 Jun 1944 to the USSR (T-189) 1945
YMS-454 Greenport Basin Greenport NY 136 320 30 Jun 1944 lost 1945
YMS-455 Greenport Basin Greenport NY 136 320 21 Jul 1944 to the USSR (T-190) 1945
YMS-456 Greenport Basin Greenport NY 136 320 21 Aug 1944 to the USSR (T-191) 1945
YMS-457 Greenport Basin Greenport NY 136 320 13 Sep 1944 to the USSR (T-182) 1945
YMS-458 Greenport Basin Greenport NY 136 320 9 Oct 1944 struck 1946
YMS-459 Greenport Basin Greenport NY 136 320 30 Oct 1944 struck 1946
YMS-460 Stadium Yacht Basin Cleveland OH 136 320 27 May 1944 to the USSR (T-183) 1945
YMS-461 Stadium Yacht Basin Cleveland OH 136 320 21 Jun 1944 reclassified 1947 as Swallow (AMS-36), to Japan 1955 as Yugeshima (MSC-660), scrapped 1969
YMS-462 Hiltebrant Dry Dock Kingston NY 136 320 9 Jun 1944 to the USSR (T-184) 1945
YMS-463 Hiltebrant Dry Dock Kingston NY 136 320 15 Jul 1944 to South Korea 1948 as Kang Nung, scrapped 1959
YMS-464 Gibbs Gas Engine Jacksonville FL 136 320 13 Jun 1944 to the USSR (T-188) 1945
YMS-465 Gibbs Gas Engine Jacksonville FL 136 320 17 Jun 1944 to the USSR (T-187) 1945
YMS-466 Gibbs Gas Engine Jacksonville FL 136 320 4 Jul 1944 to the USSR (192) 1945
YMS-467 Gibbs Gas Engine Jacksonville FL 136 320 4 Aug 1944 struck 1946
YMS-468 Gibbs Gas Engine Jacksonville FL 136 320 31 Aug 1944 to Turkey 1947 as Kusadasi, struck 1965
YMS-469 Gibbs Gas Engine Jacksonville FL 136 320 22 Sep 1944 to the USSR (T-186) 1945
YMS-470 Gibbs Gas Engine Jacksonville FL 136 320 14 Oct 1944 reclassified as Swan (AMS-37)
YMS-471 Gibbs Gas Engine Jacksonville FL 136 320 27 Oct 1944 reclassified as Verdin (AMS-38)
YMS-472 Gibbs Gas Engine Jacksonville FL 136 320 10 Nov 1944 lost 1945
YMS-473 Harbor Boatbuilding Terminal Island CA 136 320 22 Aug 1944 to South Korea 1948 as Ko Won, sunk 1948
YMS-474 Harbor Boatbuilding Terminal Island CA 136 320 23 Jun 1944 struck 1957
YMS-475 San Diego Marine San Diego CA 136 320 16 Aug 1944 struck 1946
YMS-476 San Diego Marine San Diego CA 136 320 21 Nov 1944 to South Korea 1948 as Kae Song
YMS-477 Tacoma boat Tacoma WA 136 320 10 Jul 1944 struck 1946
YMS-478 Tacoma boat Tacoma WA 136 320 21 Aug 1944 lost 1945
YMS-479 Mojean & Ericson Tacoma WA 136 320 20 Jul 1944 reclassified 1947 as Waxbill (AMS-39), struck 1959
YMS-480 Bellingham Iron Works Bellingham WA 136 320 15 Mar 1944 reclassified 1947 as YDG-7, struck 1946
YMS-481 Bellingham Iron Works Bellingham WA 136 320 15 Mar 1944 sunk by shore batteries off Borneo and lost 1945

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