Home  Minesweepers

Mine-Warfare Ships and Boats Built Since WWII

Most recent update: May 18, 2012.

After the war, the Navy retained 60 Yard Minesweepers (YMS) and reclassified them as Motor Minesweepers (AMS).  Then, in the early 1950s, the Navy started to build new AMSs but, in 1955, changed the designation to MSC and simultaneously reclassified the 60 ex-YMSs as MSC(O)s , where the O stood for Old.  The basic design of the new boats had a light displacement of 390 tons and was 144 feet long.  In total, 312 were built, all but 24 of them being transferred directly to allied navies, and 59 of them being built by yards in the recipient countries.

The Navy also retained 50 other craft - mostly LCI(L)s and LCTs - after the war and converted them to Coastal Minesweepers (Undersea Locator), or AMCUs: this designation was changed to Mine Hunter (MHC) in 1955. 

In parallel with the MSC program, the Navy also built a series of Ocean Minesweepers (AM): this designation was changed to MSO in 1955.  The basic design of these boats had a light displacement of 630 tons and was 172 feet long.  In total, 101 were built, of which 65 were for the U.S. Navy and 36 were for allied navies: all these boats were built by U.S. yards.

In the late 1950s, the Navy initiated a third program, to build Inshore Minesweepers, (MSI).  The basic design of these boats had a light displacement of 120 tons and was 112 feet long.  In total, 55 were built, all but the first two for allied navies: only the first eight were built in U.S. yards, the remainder being built by yards in the recipient countries.

Also in the 1950s, the Navy built a series of Minesweeping Boats (MSB) and another of Minesweeping Launches (MSL).  There appear to have been at least 54 MSBs and at least 40 MSLs, but the records are very sketchy.  The standard MSB was 44 tons and 57 feet long, while the MSL was 10 tons and 36 feet long.  Any information about these boats would be welcomed.

Following this surge of activity in the 1950s and 60s, there was no new construction activity until the Reagan Administration, when the Navy built 14 Mine Countermeasures Ships (MCM) and 12 Mine Hunters (MHC).  At present, there are no plans for any new mine-warfare ships or boats, the Littoral Combat Ship (LCS) having taken over this role.

Type # Old Type Old # Original Name Shipbuilder LDT Feet Original Delivery Date Conversion Delivery Date Built for New Type New # Disposition
Minesweepers Ocean (AM/MSO)
MSO 421 AM 421 Agile Luders Marine 630 172 21-Jun-56   U.S. Navy     Scrapped 1979
MSO 422 AM 422 Aggressive Luders Marine 630 172 25-Nov-53   U.S. Navy     Scrapped 1980
MSO 423 AM 423 Avenge Luders Marine 630 172 13-May-54   U.S. Navy     Destroyed by fire 1970
MSO 424 AM 424 Bold Norfolk NSY 630 172 25-Sep-53   U.S. Navy     Scrapped 1980
MSO 425 AM 425 Bulwark Norfolk NSY 630 172 12-Nov-53   U.S. Navy     Scrapped 1980
MSO 426 AM 426 Conflict Fulton Shipyard 630 172 23-Mar-54   U.S. Navy     Scrapped 1973
MSO 427 AM 427 Constant Fulton Shipyard 630 172 8-Sep-54   U.S. Navy     Scrapped 2001
MSO 428 AM 428 Dash Astoria Marine 630 172 14-Aug-53   U.S. Navy     Scrapped 1983
MSO 429 AM 429 Detector Astoria Marine 630 172 26-Jan-54   U.S. Navy     Scrapped 1983
MSO 430 AM 430 Direct Hiltebrant DD 630 172 9-Jul-54   U.S. Navy     Scrapped 1983
MSO 431 AM 431 Dominant Hiltebrant DD 630 172 8-Nov-54   U.S. Navy     Scrapped 1983
MSO 432 AM 432 Dynamic Colberg BW 630 172 7-Feb-54   U.S. Navy     To Spain 1974 as Guadalete (M 41): struck 1998
MSO 433 AM 433 Engage Colberg BW 630 172 29-Jun-54   U.S. Navy     Scrapped 2002
MSO 434 AM 434 Embattle Colberg BW 630 172 16-Nov-54   U.S. Navy     Scrapped 1976
MSO 435 AM 435 Endurance Martinac SB 630 172 19-May-54   U.S. Navy     Scrapped 1973
MSO 436 AM 436 Energy Martinac SB 630 172 16-Jul-54   U.S. Navy     To Philippines 1972 as Davao del Norte (PM 91): scrapped 1977
MSO 437 AM 437 Enhance Martinolich SB 630 172 16-Apr-55   U.S. Navy     Scrapped 2000
MSO 438 AM 438 Esteem Martinolich SB 630 172 10-Sep-55   U.S. Navy     Scrapped 2000
MSO 439 AM 439 Excel Higgins Industries 630 172 24-Feb-55   U.S. Navy     Scrapped 2000
MSO 440 AM 440 Exploit Higgins Industries 630 172 31-Mar-54   U.S. Navy     Scrapped 2002
MSO 441 AM 441 Exultant Higgins Industries 630 172 22-Jun-54   U.S. Navy     Scrapped 2002
MSO 442 AM 442 Fearless Higgins Industries 630 172 22-Sep-54   U.S. Navy     Scrapped 1992
MSO 443 AM 443 Fidelity Higgins Industries 630 172 19-Jan-55   U.S. Navy     Scrapped 2000
MSO 444 AM 444 Firm Martinac SB 630 172 12-Oct-54   U.S. Navy     To Philippines 1972 as Davao del Sur (PM 92): scrapped 1977
MSO 445 AM 445 Force Martinac SB 630 172 4-Jan-55   U.S. Navy     Sunk 1972
MSO 446 AM 446 Fortify Seattle SB 630 172 16-Jul-54   U.S. Navy     Scrapped 2002
MSO 447 AM 447 Guide Seattle SB 630 172 15-Mar-55   U.S. Navy     Scrapped 1973
MSO 448 AM 448 Illusive Martinolich SB 630 172 14-Nov-53   U.S. Navy     Scrapped 1993
MSO 449 AM 449 Impervious Martinolich SB 630 172 15-Jul-54   U.S. Navy     Scrapped 2002
MSO 450 AM 450 Berneval Bellingham SY 630 172 23-Dec-53   France M 613 Struck 1987
MSO 451 AM 451 Bir Hacheim Bellingham SY 630 172 24-Feb-54   France M 614 Returned 1970: to Uruguay as Maldonado (MS 33): scrapped 1979
MSO 452 AM 452 Garigliano Bellingham SY 630 172 29-Apr-54   France M 617 Sunk as target 1996
MSO 453 AM 453 Alencon Bellingham SY 630 172 23-Jun-54   France M 612 Struck 1983
MSO 454 AM 454 Dompaire Bellingham SY 630 172 23-Jun-54   France M 616 Struck 1983
MSO 455 AM 455 Implicit Wilmington BW 630 172 10-Mar-54   U.S. Navy     To Taiwan 1995 as Yung Ky: active
MSO 456 AM 456 Inflict Wilmington BW 630 172 11-May-54   U.S. Navy     Scrapped 1992
MSO 457 AM 457 Loyalty Wilmington BW 630 172 11-Jun-54   U.S. Navy     Scrapped 1973
MSO 458 AM 458 Lucid Higgins Industries 630 172 14-May-55   U.S. Navy     Sold for scrap 1976 but laid up, to be museum in Stockton CA
MSO 459 AM 459 Nimble Higgins Industries 630 172 11-May-55   U.S. Navy     Scrapped 1981
MSO 460 AM 460 Notable Higgins Industries 630 172 8-Jun-55   U.S. Navy     Scrapped 1971
MSO 461 AM 461 Observer Higgins Industries 630 172 31-Aug-55   U.S. Navy     Scrapped 1979
MSO 462 AM 462 Pinnacle Higgins Industries 630 172 21-Oct-55   U.S. Navy     Scrapped 1978
MSO 463 AM 463 Pivot Wilmington BW 630 172 12-Jul-54   U.S. Navy     To Spain 1974 as Guadalmedina (M 42): active
MSO 464 AM 464 Pluck Wilmington BW 630 172 11-Aug-54   U.S. Navy     Scrapped 1992
MSO 465 AM 465 Prestige Wilmington BW 630 172 11-Sep-54   U.S. Navy     Scrapped 1971
MSO 466 AM 466 Prime Wilmington BW 630 172 11-Oct-54   U.S. Navy     Scrapped 1976
MSO 467 AM 467 Reaper Wilmington BW 630 172 10-Nov-54   U.S. Navy     Scrapped 1976
MSO 468 AM 468 Rival Luders Marine 630 172 3-Sep-54   U.S. Navy     Scrapped 1971
MSO 469 AM 469 Sagacity Luders Marine 630 172 20-Jan-55   U.S. Navy     Scrapped 1971
MSO 470 AM 470 Salute Luders Marine 630 172 4-May-55   U.S. Navy     Scrapped 1971
MSO 471 AM 471 Skill Luders Marine 630 172 7-Nov-55   U.S. Navy     Scrapped 1979
MSO 472 AM 472 Valor Burger Boats 630 172 29-Jul-54   U.S. Navy     Scrapped 1971
MSO 473 AM 473 Vigor Burger Boats 630 172 8-Jul-54   U.S. Navy     To Spain 1974 as Guadiana (M 44): active
MSO 474 AM 474 Vital Burger Boats 630 172 9-Jun-55   U.S. Navy     Scrapped 1979
MSO 475 AM 475 My Tho Bellingham SY 630 172 Dec-53   France M 615 Struck 1989
MSO 476 AM 476 Can Tho Bellingham SY 630 172 Oct-54   France M 618 Struck 1987
MSO 477 AM 477 Vinh Long Bellingham SY 630 172 5-Jan-55   France M 619 Scrapped 1992
MSO 478 AM 478 Sao Jorge Bellingham SY 630 172 30-Apr-54   Portugal M 415 Discarded 1973
MSO 479 AM 479 Pico Bellingham SY 630 172 18-Jun-54   Portugal M 416 Discarded 1973, sunk in Ostend harbor
MSO 480 AM 480 Onversaagd Astoria Marine 630 172 19-May-54   Netherlands M 884 Scrapped 1979
MSO 481 AM 481 Onvevreesde Astoria Marine 630 172 21-Sep-54   Netherlands M 885 Scrapped 1989
MSO 482 AM 482 Onverschrokken Astoria Marine 630 172 18-Jan-55   Netherlands M 886 Torpedo trials ship 1972
MSO 483 AM 483 Onvermoeid Peterson Builders 630 172 18-Jun-54   Netherlands M 887 Museum in the Netherlands
MSO 484 AM 484 Onvervaard Peterson Builders 630 172 12-Aug-54   Netherlands M 888 Scrapped 1985
MSO 485 AM 485 Onverdrotten Peterson Builders 630 172 22-Nov-54   Netherlands M 889 Struck 1982
MSO 486 AM 486 Gracioso Burger Boats 630 172 19-Nov-53   Portugal M 417 Discarded 1973
MSO 487 AM 487 Corvo Burger Boats 630 172 28-Jul-54   Portugal M 418 Discarded 1973
MSO 488 AM 488 Conquest Martinac SB 630 172 20-Jul-55   U.S. Navy     To Taiwan 1995 as Yung Tzu (M 1307), active
MSO 489 AM 489 Gallant Martinac SB 630 172 14-Sep-55   U.S. Navy     To Taiwan 1995 as Yung Der (M 1308), active
MSO 490 AM 490 Leader Martinac SB 630 172 16-Nov-55   U.S. Navy     Scrapped 1994
MSO 491 AM 491 Persistent Martinac SB 630 172 3-Feb-56   U.S. Navy     To Spain 1971 as Guadalquivir (M 43): active
MSO 492 AM 492 Pledge Martinac SB 630 172 20-Apr-56   U.S. Navy     To Taiwan 1995 as Yung Yang (M 1309), active
MSO 493 AM 493 Stalwart Broward Marine 630 172 23-Apr-57   U.S. Navy     Scrapped 1971
MSO 494 AM 494 Sturdy Broward Marine 630 172 23-Oct-57   U.S. Navy     Scrapped 1978
MSO 495 AM 495 Swerve Broward Marine 630 172 27-Jul-57   U.S. Navy     Scrapped 1978
MSO 496 AM 496 Venture Broward Marine 630 172 3-Feb-58   U.S. Navy     Scrapped 1978
MSO 497 AM 497     630 172           Number not used
MSO 498 AM 498 Lagen Bellingham SY 630 172 27-Sep-55   Norway M 950 To Belgium 1966 as A.F. Dufour (M 903), scrapped 2002
MSO 499 AM 499 Nansen Bellingham SY 630 172 1-Nov-55   Norway M 951 To Belgium 1966 as De Brouwer (M 904), scrapped 2002
MSO 500 AM 500 Berlaimont Bellingham SY 630 172 12-Dec-55   France M 620 Struck 1989
MSO 501 AM 501 Origny Bellingham SY 630 172 23-Jan-56   France M 621 Converted to A 640 in 1962
MSO 502 AM 502 Autun Bellingham SY 630 172 14-Mar-56   France M 622 Scrapped 1985
MSO 503 AM 503 Artevelde Tacoma Boat 630 172 15-Dec-55   Belgium M 907 Struck 1985
MSO 504 AM 504 Breydel Tacoma Boat 630 172 15-Feb-56   Belgium M 906 Museum in Belgium
MSO 505 AM 505 Baccarat Tacoma Boat 630 172 15-Apr-57   France M 623 Struck 1993
MSO 506 AM 506 Storione Martinolich SB 630 172 1-Feb-56   Italy M 5434 Converted to fisheries patrol craft: active
MSO 507 AM 507 Salmone Martinolich SB 630 172 1-Jun-56   Italy M 5430 Converted to fisheries patrol craft: struck 1996
MSO 508 AM 508 Acme Frank L. Sample 630 172 27-Sep-56   U.S. Navy     Scrapped 1976
MSO 509 AM 509 Adroit Frank L. Sample 630 172 4-Mar-57   U.S. Navy     Scrapped 1994
MSO 510 AM 510 Advance Frank L. Sample 630 172 16-Jun-58   U.S. Navy     Sold for scrap 1976 but still laid up in Stockton CA
MSO 511 AM 511 Affray Frank L. Sample 630 172 8-Dec-58   U.S. Navy     Scrapped 2002
MSO 512 AM 512 Narvik Peterson Builders 630 172 24-Jun-56   France M 610 Struck 1994
MSO 513 AM 513 Ouistreham Peterson Builders 630 172 22-Aug-56   France M 611 Converted to A 769 in 1976
MSO 514 AM 514 Colmar Peterson Builders 630 172 17-Oct-56   France M 624 Scrapped 1985
MSO 515 AM 515 Georges Truffaut Tampa Marine 630 172 12-Oct-56   Belgium M 908 Scrapped 2002
MSO 516 AM 516 Francois Bovesse Tampa Marine 630 172 25-Jan-57   Belgium M 909 Scrapped 2002
MSO 517     Sgombro Tampa Marine 630 172 1-Jun-57   Italy M 5432 Converted to fisheries patrol craft: struck 1990
MSO 518     Squalo Tampa Marine 630 172 1-Jun-57   Italy M 5433 Converted to fisheries patrol craft: active
MSO 519     Ability Peterson Builders 934 190 4-Aug-58   U.S. Navy     Scrapped 1972
MSO 520     Alacrity Peterson Builders 934 190 1-Oct-58   U.S. Navy     Scrapped 1978
MSO 521     Assurance Peterson Builders 934 190 21-Nov-58   U.S. Navy     Scrapped 1978
MSO 522     J. E. Van Haverbeke Peterson Builders 934 190 9-Dec-60   Belgium M 902 Scrapped 2002
MSO 523-538                       Cancelled
Minesweepers Coastal (AMS/MSC)
AMS 1 YMS 80 Albatross Stadium YB 320 136 15-Jul-42   U.S. Navy     Sold 1959 as Dorado
AMS 2 YMS 164 Bobolink Dachel-Carter SB 270 136 27-Mar-43   U.S. Navy     Later MHC 44 1955, struck 1960
AMS 3 YMS 170 Bunting Dachel-Carter SB 270 136 10-Jul-43   U.S. Navy     Later MHC 45 1955, struck 1960
AMS 4 YMS 179 Cardinal Henry C. Grebe 270 136 28-Aug-43   U.S. Navy     To Brazil 1960 as Javari (M 11), scrapped 1970
AMS 5 YMS 192 Condor Greenport Basin 270 136 13-Jun-43   U.S. Navy     To Japan 1955 as Ujishima (MSC 655), returned 1967, sunk as target 1968
AMS 6 YMS 201 Courser Hiltebrant DD 270 136 24-Jul-43   U.S. Navy     Struck 1959
AMS 7 YMS 215 Crow Robert Jacob 270 136 22-Jul-43   U.S. Navy     Struck 1959
AMS 8 YMS 218 Curlew Martinac SB 270 136 23-Jun-43   U.S. Navy     To Korea 1956 as Kum Hwa (MSCO 519), discarded 1977
AMS 9 YMS 219 Flicker Martinac SB 270 136 20-Jul-43   U.S. Navy     Struck 1960
AMS 10 YMS 231 Firecresy Frank Sample 270 136 6-Aug-43   U.S. Navy     To Japan 1955 as Etajima (MSC 656), returned 1967, sunk as target 1969
AMS 11 YMS 238 Flamingo Stadium YB 270 136 11-May-42   U.S. Navy     Struck 1959
AMS 12 YMS 306 Goldfinch Rice Brothers 270 136 20-Jan-44   U.S. Navy     Sold 1960, later Maida Lee 1978, reefed off Key West
AMS 13 YMS 312 Grackle Henry B. Nevins 270 136 6-Dec-43   U.S. Navy     To Brazil 1963 as Jurvenai (M 14)
AMS 14 YMS 317 Grosbeak South Coast 270 136 18-Nov-43   U.S. Navy     Struck 1959
AMS 15 YMS 321 Grouse Al Larson Boat Shop 270 136 25-Oct-43   U.S. Navy     Wrecked and destroyed 1963
AMS 16 YMS 324 Gull Al Larson Boat Shop 270 136 28-Feb-44   U.S. Navy     Later MHC 46 1955, disposed of 1959
AMS 17 YMS 362 Hawk Robert Jacob 270 136 6-Oct-43   U.S. Navy     Sold 1957
AMS 18 YMS 369 Heron Wheeler SB 270 136 3-Oct-43   U.S. Navy     To Japan 1955 as Nawajima (MSC 657), returned 1967, sunk as target 1969
AMS 19 YMS 371 Hornbill Weaver SY 270 136 29-Feb-44   U.S. Navy     Sold 1960 as Los Buscaderos, later Peacock 1968, Spirit of America, sank
AMS 20 YMS 372 Hummer Weaver SY 270 136 28-Mar-44   U.S. Navy     To Japan 1959 as Moroshima (MSC 663)
AMS 21 YMS 373 Jackdaw Weaver SY 270 136 29-Apr-44   U.S. Navy     To Brazil 1960 as Jurva (M 13)
AMS 22 YMS 374 Kite Weaver SY 270 136 31-May-44   U.S. Navy     To Korea 1956 as Kim Po (MSCO 520)
AMS 23 YMS 376 Lark Greenport Basin 270 136 10-Aug-43   U.S. Navy     To Japan 1955 as Ninoshima (MSC 662)
AMS 24 YMS 395 Linnet Harbor BB 270 136 20-Nov-43   U.S. Navy     To Naval Reserve 1959, sold 1968
AMS 25 YMS 400 Magpie Henry B. Nevins 270 136 15-May-43   U.S. Navy     Lost to a mine off Chusan 1950
AMS 26 YMS 417 Merganser Stadium YB 270 136 11-Nov-44   U.S. Navy     Later MHC 47 1955, sold for scrap 1960 but not scrapped, sold 1971 as yacht Miss Juanita
AMS 27 YMS 419 Mockingbird Henry C. Grebe 270 136 18-Nov-44   U.S. Navy     To Korea 1956 as Ko Chang (MSCO 521)
AMS 28 YMS 422 Osprey Astoria Marine 270 136 27-Sep-44   U.S. Navy     To Japan 1955 as Yakushima (MSC 658), scrapped 1969
AMS 29 YMS 430 Ostrich Tacoma Boat 270 136 10-Oct-44   U.S. Navy     Scrapped 1960
AMS 30 YMS 434 Parrakeet Martinac SB 270 136 15-Nov-44   U.S. Navy     Sold 1947 as Dan, wrecked 1959
AMS 31 YMS 437 Partridge Martinac SB 270 136 25-Jul-45   U.S. Navy     Lost to a mine in Wonson 2-Feb-51
AMS 32 YMS 441 Pelican Robert Jacob 270 136 21-Feb-45   U.S. Navy     To Japan 1955 as Ogishima (MSC 659), scrapped 1969
AMS 33 YMS 442 Plover Hiltebrand DD 270 136 14-Oct-44   U.S. Navy     Struck 1968
AMS 34 YMS 443 Redhead Hiltebrand DD 270 136 15-Dec-44   U.S. Navy     Later MHC 48 1955, struck 1959
AMS 35 YMS 446 Sanderling Robert Jacob 270 136 8-Jun-44   U.S. Navy     Later MHC 49 1955, struck 1959
AMS 36 YMS 451 Swallow Stadium YB 270 136 22-Jun-44   U.S. Navy     To Japan 1955 as Yugeshima (MSC 660), scrapped 1969
AMS 37 YMS 470 Swan Gibbs Gas Engine 270 136 14-Oct-44   U.S. Navy     Sold 1961
AMS 38 YMS 471 Verdin Gibbs Gas Engine 270 136 27-Oct-44   U.S. Navy     Struck 1959
AMS 39 YMS 479 Waxbill Mojean & Ericson 270 136 20-Jul-43   U.S. Navy     Later MHC 50 1955, struck 1959
AMS 40 YMS 415 Chatterer Stadium YB 270 136 1-Oct-44   U.S. Navy     To Japan 1955 as Yurishima (MSC 661), scrapped 1968
AMS 41 YMS 45 Barbet Wheeler SB 270 136 5-Jun-42   U.S. Navy     Struck 1959
AMS 42 YMS 109 Brambling Burger Boat 270 136 4-Sep-42   U.S. Navy     Struck 1959
AMS 43 YMS 113 Brant San Diego Marine 270 136 12-Aug-42   U.S. Navy     Struck 1959
AMS 44 YMS 114 Courlan San Diego Marine 270 136 12-Aug-42   U.S. Navy     Struck 1959
AMS 45 YMS 120 Crossbill Harbor BB 270 136 1-Aug-42   U.S. Navy     Struck 1959
AMS 46 YMS 136 Egret Astoria Marine 270 136 19-Mar-43   U.S. Navy     To Brazil 1960 as Jutai (M 12)
AMS 47 YMS 193 Fulmar Greenport Basin 270 136 28-Jun-43   U.S. Navy     Sold 1968
AMS 48 YMS 268 Lapwing Kruse & Banks 270 136 31-Jul-43   U.S. Navy     Sold 1959 as Weems, sold 1990
AMS 49 YMS 271 Lorikeet Bellingham SY 270 136 21-Apr-43   U.S. Navy     Scrapped 1968
AMS 50 YMS 290 Nightingale Associated SB 270 136 17-Jul-43   U.S. Navy     Sold 1959
AMS 51 YMS 291 Reedbird Associated SB 270 136 9-Aug-43   U.S. Navy     Struck 1968
AMS 52 YMS 299 Rhea William F. Stone 270 136 7-Apr-43   U.S. Navy     Sold 1960, sank 1997
AMS 53 YMS 311 Robin Henry B. Nevins 270 136 6-Nov-43   U.S. Navy     Struck 1961
AMS 54 YMS 327 Ruff Ballard MR 270 136 19-Apr-43   U.S. Navy     Sold 1969
AMS 55 YMS 402 Seagull Henry B. Nevins 270 136 26-Jun-43   U.S. Navy     Sold 1959
AMS 56 YMS 444 Turkey Hiltebrand DD 270 136 26-Dec-44   U.S. Navy     Sold 1969
AMS 57 YMS 294 Redpoll Associated SB 270 136 11-Sep-43   U.S. Navy     To Columbia U. 1960 as RV Sir Horace Lamb, scrapped 1976
AMS 58 YMS 425 Siskin Astoria Marine 270 136 21-Dec-44   U.S. Navy     Scrapped 1968
AMS 59 PCS 1400 Coquille South Coast 270 136 2-Jan-45   U.S. Navy     Sold 1963
MSC 60 AMS 60 Ponta Delgada Consolidated SB 390 144 30-Jun-53   Portugal M 405 Discarded 1973
MSC 61 AMS 61 Horta Consolidated SB 390 144 30-Jun-53   Portugal M 406 Discarded 1976
MSC 62 AMS 62 Angra do Heroismo Consolidated SB 390 144 12-Aug-53   Portugal M 407 Discarded 1973