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(Top) 1 World War II Service 2 Operation Crossroads "ground" zero 3 External links 4 References

USS LSM-60

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History
LSM-60 with modifications for the Baker Test, Bikini Atoll
United States
Name	USS LSM-60
Builder	Brown Shipbuilding, Houston, Texas
Laid down	7 July 1944
Launched	29 July 1944
Commissioned	25 August 1944
Honors and awards	1battle star (World War II)
Fate	Destroyed during "Operation Crossroads" Test Baker, 25 July 1946
General characteristics
Class and type	LSM-1 class Landing Ship Medium
Displacement	520 long tons (528 t) light 743 long tons (755 t) landing 1,095 long tons (1,113 t) full load
Length	203 ft 6 in (62.03 m) o/a
Beam	34 ft 6 in (10.52 m)
Draft	3 ft 6 in (1.07 m) forward 7 ft 8 in (2.34 m) aft Fully loaded : 6 ft 4 in (1.93 m) forward 8 ft 3 in (2.51 m) aft
Propulsion	2 × Fairbanks-Morse (model 38D81/8X10, reversible with hydraulic clutch) diesels. Direct drive with 1,440 bhp (1,074 kW) each @ 720 rpm, twin screws
Speed	13.2 knots (15.2 mph; 24.4 km/h)
Range	4,900 nmi (9,100 km) at 12 kn (22 km/h)
Capacity	5 medium or 3 heavy tanks, or6LVT's, or9DUKW's
Troops	2 officers, 46 enlisted
Complement	5 officers, 54 enlisted
Armament	6 × 20 mmAAgun mounts
Armour	10-lb. STS splinter shield to gun mounts, pilot house and conning station

USS LSM-60 was a World War II era landing ship, medium (LSM) amphibious assault ship of the United States Navy. It was notable for being used as the float to suspend a fission bomb underwater during the Operation Crossroads BAKER test, becoming the first naval vessel to deploy a nuclear weapon.^[1]

World War II Service[edit]

LSM-60's keel was laid on 7 July 1944 and she was launched on 29 July.^[2] She was commissioned on 25 August.^[3]

LSM-60 participated in the assault landings at Iwo Jima, where she earned one battle star.^[3]

Operation Crossroads "ground" zero[edit]

LSM-60 is destroyed as part of the Operation Crossroads BAKER test

In 1946, the United States conducted the first nuclear weapon tests designed to measure nuclear explosion effects on ships, Operation Crossroads. The second shot of this test, BAKER, was designed to test the effects of an underwater nuclear blast on surface ships and submarines.

LSM-60 was modified with a well through the cargo deck and hull, a derrick to lower the bomb through the well, and a large antenna to receive the detonation signal. On 25 July, a standard Mk. 3A "Fat Man" type atomic bomb, nicknamed Helen of Bikini, placed in a watertight casing, was suspended 90 feet below LSM-60 in the lagoon of Bikini Atoll in the Marshall Islands.^[4] At 0835 local time the bomb was detonated, destroying LSM-60 and eight target ships, including USS Saratoga (CV-3).^[5] A seaman present claimed that "there was not one identifiable piece of the LSM-60 ever located",^[4] however a British naval constructor present reports he saw a 3-inch (7.6 cm) square piece of LSM-60 on the deck of a target ship afterward.^[6]

External links[edit]

Photo gallery of USS LSM-60 at NavSource Naval History

References[edit]

^ The ill-fated USS Indianapolis (CA-35) was the first to carry a nuclear weapon.

^ "LSM-60". Retrieved 26 December 2006.

^ ^a ^b "NavSource Online: Amphibious Photo Archive LSM-60". Retrieved 26 December 2006.

^ ^a ^b "Operation Crossroads". Retrieved 26 December 2006.^{[dead link]}

^ "Operation Crossroads 1946". Retrieved 26 December 2006.

^ Daniel, R. J. (2003). The End of an Era. Periscope Publishing Ltd. p. 83. ISBN 978-1-904381-18-1.

LSM-1-class landing ships medium

LSM-1 – LSM-99

LSM-1
LSM-2
LSM-3
LSM-4
LSM-5
LSM-6
LSM-7
LSM-8
LSM-9
LSM-10
LSM-11
LSM-12
LSM-13
LSM-14
LSM-15
LSM-16
LSM-17
LSM-18
LSM-19
LSM-20
LSM-21
LSM-22
LSM-23
LSM-24
LSM-25
LSM-26
LSM-27
LSM-28
LSM-29
LSM-30
LSM-31
LSM-32
LSM-33
LSM-34
LSM-35
LSM-36
LSM-37
LSM-38
LSM-39
LSM-40
LSM-41
LSM-42
LSM-43
LSM-44
LSM-45
LSM-46
LSM-47
LSM-48
LSM-49
LSM-50
LSM-51
LSM-52
LSM-53
LSM-54
LSM-55
LSM-56
LSM-57
LSM-58
LSM-59
LSM-60
LSM-61
LSM-62
LSM-63
LSM-64
LSM-65
LSM-66
LSM-67
LSM-68
LSM-69
LSM-70
LSM-71
LSM-72
LSM-73
LSM-74
LSM-75
LSM-76
LSM-77
LSM-78
LSM-79
LSM-80
LSM-81
LSM-82
LSM-83
LSM-84
LSM-85
LSM-86
LSM-87
LSM-88
LSM-89
LSM-90
LSM-91
LSM-92
LSM-93
LSM-94
LSM-95
LSM-96
LSM-97
LSM-98
LSM-99

LSM-100 – LSM-187

LSM-100
LSM-101
LSM-102
LSM-103
LSM-104
LSM-105
LSM-106
LSM-107
LSM-108
LSM-109
LSM-110
LSM-111
LSM-112
LSM-113
LSM-114
LSM-115
LSM-116
LSM-117
LSM-118
LSM-119
LSM-120
LSM-121
LSM-122
LSM-123
LSM-124
LSM-125
LSM-126
LSM-127
LSM-128
LSM-129
LSM-130
LSM-131
LSM-132
LSM-133
LSM-134
LSM-135
LSM-136
LSM-137
LSM-138
LSM-139
LSM-140
LSM-141
LSM-142
LSM-143
LSM-144
LSM-145
LSM-146
LSM-147
LSM-148
LSM-149
LSM-150
LSM-151
LSM-152
LSM-153
LSM-154
LSM-155
LSM-156
LSM-157
LSM-158
LSM-159
LSM-160
LSM-161 / Kodiak
LSM-162
LSM-163
LSM-164
LSM-165
LSM-166
LSM-167
LSM-168
LSM-169
LSM-170
LSM-171
LSM-172
LSM-173
LSM-174
LSM-175 / Oceanside
LSM-176
LSM-177
LSM-178
LSM-179
LSM-180
LSM-181
LSM-182
LSM-183
LSM-184
LSM-185
LSM-186
LSM-187

LSM-200 – LSM-299

LSM-200
LSM-201
LSM-202
LSM-203
LSM-204
LSM-205
LSM-206
LSM-207
LSM-208
LSM-209
LSM-210
LSM-211
LSM-212
LSM-213
LSM-214
LSM-215
LSM-216
LSM-217
LSM-218
LSM-219
LSM-220
LSM-221
LSM-222
LSM-223
LSM-224
LSM-225
LSM-226
LSM-227
LSM-228
LSM-229
LSM-230
LSM-231
LSM-232
LSM-233
LSM-234
LSM-235
LSM-236
LSM-237
LSM-238
LSM-239
LSM-240
LSM-241
LSM-242
LSM-243
LSM-244
LSM-245
LSM-246
LSM-247
LSM-248
LSM-249
LSM-250
LSM-251
LSM-252
LSM-253
LSM-254
LSM-255
LSM-256
LSM-257
LSM-258
LSM-259
LSM-260
LSM-261
LSM-262
LSM-263
LSM-264
LSM-265
LSM-266
LSM-267
LSM-268
LSM-269
LSM-270
LSM-271
LSM-272
LSM-273
LSM-274
LSM-275 / Portunus
LSM-276
LSM-277
LSM-278
LSM-279
LSM-280
LSM-281
LSM-282
LSM-283
LSM-284
LSM-285
LSM-286
LSM-287
LSM-288
LSM-289
LSM-290
LSM-291
LSM-292
LSM-293
LSM-294
LSM-295
LSM-296
LSM-297
LSM-298
LSM-299

LSM-300 – LSM-400

LSM-300
LSM-301 / MMC-6
LSM-302
LSM-303 / MMC-7
LSM-304
LSM-305
LSM-306
LSM-307
LSM-308
LSM-309
LSM-310
LSM-311
LSM-312
LSM-313
LSM-314
LSM-315
LSM-316
LSM-317
LSM-318
LSM-319
LSM-320
LSM-321
LSM-322
LSM-323
LSM-324
LSM-325
LSM-326
LSM-327
LSM-328
LSM-329
LSM-330
LSM-331
LSM-332
LSM-333
LSM-334
LSM-335 / T-LSM-335
LSM-336
LSM-337
LSM-338
LSM-339
LSM-340
LSM-341
LSM-342
LSM-343
LSM-344
LSM-345
LSM-346
LSM-347
LSM-348
LSM-349
LSM-350
LSM-351
LSM-352
LSM-353
LSM-354
LSM-355
LSM-356
LSM-357
LSM-358
LSM-359
LSM-360
LSM-361
LSM-362
LSM-363
LSM-364
LSM-365
LSM-366
LSM-367
LSM-368
LSM-369
LSM-370
LSM-371
LSM-372
LSM-373 / Lakeland
LSM-374
LSM-375
LSM-376
LSM-377
LSM-378
LSM-379
LSM-380
LSM-381
LSM-382
LSM-383
LSM-384
LSM-385
LSM-386
LSM-387
LSM-388
LSM-389 / MMC-8
LSM-390
LSM-391
LSM-392 / MMC-9
LSM-393
LSM-394
LSM-395
LSM-396
LSM-397
LSM-398 / Hunting
LSM-399
LSM-400

LSM-413 – LSM-500

LSM-413
LSM-414
LSM-415
LSM-416
LSM-417
LSM-418
LSM-419
LSM-420
LSM-421
LSM-422
LSM-423
LSM-424
LSM-425
LSM-426
LSM-427
LSM-428
LSM-429
LSM-430
LSM-431
LSM-432
LSM-433
LSM-434
LSM-435
LSM-436
LSM-437
LSM-438
LSM-439
LSM-440
LSM-441
LSM-442
LSM-443
LSM-444
LSM-445 / E-LSM-445 / Catapult
LSM-446 / E-LSM-446 / Launcher
LSM-447
LSM-448
LSM-449
LSM-450
LSM-451
LSM-452
LSM-453
LSM-454
LSM-455
LSM-456
LSM-457
LSM-458
LSM-459
LSM-460
LSM-461
LSM-462
LSM-463 / T-LSM-463
LSM-464
LSM-465
LSM-466
LSM-467
LSM-468
LSM-469
LSM-470
LSM-471
LSM-472
LSM-473
LSM-474
LSM-475
LSM-476
LSM-477
LSM-478
LSM-479
LSM-480
LSM-481 / MMC-10
LSM-482
LSM-483
LSM-484 / MMC-11
LSM-485
LSM-486
LSM-487
LSM-488
LSM-489
LSM-490 / MMC-12
LSM-491
LSM-492 / MMC-13
LSM-493 / MMC-14
LSM-494
LSM-495
LSM-496
LSM-497
LSM-498
LSM-499
LSM-500

LSM-537 – LSM-558

Other operators
Argentine Navy	BDM-1 (ex-LSM-267) BDM-2 / Corrientes (ex-LSM-86)
Australian Army	Harry Chauvel (ex-LSM-319) Brudenell White (ex-LSM-477) Vernon Sturdee (ex-LSM-315) Clive Steele (ex-LSM-547)
Brazilian Navy	Gonçalo Coelho (ex-LSM-119)
Chilean Navy	Aspirante Morel (LSM-31) (ex-LSM-417) Aspirante Goycolea (ex-LSM-400) Aspirante Morel (LSM-92) (ex-LSM-444) Aspirante Isaza (ex-LSM-295) Guardiamarina Contreras (ex-LSM-113)
Republic of China Navy Mei Chin class	Mei Lo (LSM-242) (ex-LSM-157) Mei Kun (ex-LSM-478) Mei Chin (ex-LSM-155) Mei Hua (ex-LSM-256) Mei Hong (ex-LSM-442) Mei Peng (ex-LSM-431) Mei Heng (ex-LSM-456) Mei Song (ex-LSM-457) Mei He (ex-LSM-13) Mei Jian (ex-LSM-76) Mei Cheng (ex-LSM-422) Mei Ping (ex-LSM-471) Mei Han (ex-LSM-474) Mei Lo (LSM-356) (ex-LSM-362) Mei Yi (ex-LSM-285) ex-LSM-43 ex-LSM-62 ex-LSM-69 ex-LSM-80 ex-LSM-88 ex-LSM-112 ex-LSM-124 ex-LSM-146 ex-LSM-147 ex-LSM-153 ex-LSM-154 ex-LSM-159 ex-LSM-208 ex-LSM-218 ex-LSM-225 ex-LSM-248 ex-LSM-249 ex-LSM-278 ex-LSM-280 ex-LSM-282 ex-LSM-284 ex-LSM-290 ex-LSM-292 ex-LSM-293 ex-LSM-308 ex-LSM-336 ex-LSM-337 ex-LSM-339 ex-LSM-349 ex-LSM-363 ex-LSM-374 ex-LSM-376 ex-LSM-386 ex-LSM-387 ex-LSM-391 ex-LSM-393 ex-LSM-423 ex-LSM-427 ex-LSM-430 ex-LSM-433 ex-LSM-439 ex-LSM-453 ex-LSM-461 ex-LSM-470 ex-LSM-472 ex-LSM-475 ex-LSM-482 ex-LSM-489
People's Liberation Army Navy	HUA-201 (ex-LSM-112) HUA-202 (ex-LSM-248) HUA-204 (ex-LSM-430) HUA-207 (ex-LSM-282) HUA-208 (ex-LSM-42) Huang Ho (ex-LSM-433) ex-LSM-43 ex-LSM-124 ex-LSM-153 ex-LSM-208 ex-LSM-218 ex-LSM-225 ex-LSM-237? ex-LSM-336 ex-LSM-391 ex-LSM-453? ex-LSM-475? ex-LSM-482 ex-LSM-489
Royal Danish Navy	Hjaelperen (ex-LSM-500) Beskytteren (ex-LSM-390) Vindhunden (ex-LSM-392)
Dominican Navy	San Rafael (ex-LSM-216) Sirio (ex-LSM-483) Antares (ex-LSM-538)
Ecuadorian Navy	Jambeli (ex-LSM-539) Tarqui (ex-LSM-555)
French Navy	L9011 (ex-LSM-355) L9012 (ex-LSM-110) L9013 (ex-LSM-125) L9014 (ex-LSM-316) L9015 (ex-LSM-422) L9016 (ex-LSM-478) L9017 (ex-LSM-17) L9018 (ex-LSM-58) L9019 (ex-LSM-226) L9051 (ex-LSM-85) L9052 (ex-LSM-471) ex-LSM-479
German Navy	Krokodil (ex-LSM-537) Eidechse (ex-LSM-491) Salamander (ex-LSM-553) Viper (ex-LSM-558)
Hellenic Navy	Ypoploiarkhos Grigoropoulos (ex-LSM-45) Ypoploiarkhos Toyrnas (ex-LSM-102) Daniolos (ex-LSM-227) Ypoploiarkhos Roussen (ex-LSM-399) Krystalldis (ex-LSM-541) Merlin (ex-LSM-557) Aktion (ex-LSM-301) Amvrakia (ex-LSM-303)
Indonesian Navy	ex-LSM-354
Japan Maritime Self-Defense Force	LSM-3001 (ex-LSM-125)
Republic of Korea Navy	Daecho (ex-LSM-546) Yeo Do (ex-LSM-268) Dokdo (ex-LSM-419) Gadeok (ex-LSM-462) Ku Moon (ex-LSM-30) Bian (ex-LSM-96) Pungdo (ex-LSM-54) Wolmi (ex-LSM-57) Girin (ex-LSM-19) Neongna (ex-LSM-84) Sinmmi (ex-LSM-311) Ulleung (ex-LSM-17)
Royal Norwegian Navy	Vale (ex-LSM-492) Vidar (ex-LSM-493)
Paraguayan Navy	Teniente Pratt Gill / Boqueron (ex-Corrientes)
Peruvian Navy	Lomas (ex-LSM-396) Atico (ex-LSM-554)
Philippine Navy	Batanes (L-65) (ex-LSM-236) Isabela (ex-T-LSM-463) Batanes (LP-65) (ex-Hương Giang) Western Samar (ex-Hát Giang) Oriental Mindoro (ex-LSM-320) ex-Hàn Giang (cannibalized for parts)
Portuguese Navy	Medusa / São Rafael (ex-Portunus)
Spanish Navy	LSM-1 (ex-LSM-329) LSM-2 (ex-LSM-331) LSM-3 (ex-LSM-343)
Royal Thai Navy	Kut (ex-LSM-333) Phai (ex-LSM-338) Kram (ex-LSM-469)
Turkish Navy	Mordoğan (ex-LSM-484) Meriç (ex-LSM-490) Marmaris (ex-LSM-481) Mersin (ex-Vale) Mürefte (ex-Vidar)
Bolivarian Navy of Venezuela	Friars (ex-LSM-544) Los Testigos (ex-LSM-545) Monk (ex-LSM-548) Roques (ex-LSM-543) ex-LSM-370 (cannibalized for parts) ex-LSM-542 (cannibalized for parts)
Republic of Vietnam Navy	Hát Giang (ex-L9011) Hàn Giang (ex-L9012) Lam Giang (ex-LSM-226) Ninh Giang (ex-LSM-85) Hương Giang (ex-Oceanside) Tiền Giang (ex-LSM-313) Hậu Giang (ex-LSM-276) ex-LSM-58
Vietnam People's Navy	ex-Ninh Giang ex-Tiền Giang ex-Hậu Giang