List of yard and district craft of the United States Navy

Ships of the United States Navy
Ships of the United States Navy
Ships in current service
	Current ships;
Ships grouped alphabetically
	A–B; C; D–F; G–H; I–K; L; M; N–O; P; Q–R; S; T–V; W–Z;
Ships grouped by type
	Aircraft carriers; Airships; Amphibious warfare ships; Auxiliaries; Battlecruisers; Battleships; Cruisers; Destroyers; Destroyer escorts; Destroyer leaders; Escort carriers; Frigates; Hospital ships; Littoral combat ships; Mine warfare vessels; Monitors; Oilers; Patrol vessels; Registered civilian vessels; Sailing frigates; Steam frigates; Steam gunboats; Ships of the line; Sloops of war; Submarines; Torpedo boats; Torpedo retrievers; Unclassified miscellaneous; Yard and district craft;
	v; t; e;

This is a list of yard and district craft of the United States Navy. It covers the various types of craft and ships that support the bases and harbors of the United States Navy. The hull classification symbols for these craft begin with (Y).

Ship status is indicated as either currently active [A] (including ready reserve), inactive [I], or precommissioning [P]. Ships in the inactive category include only ships in the inactive reserve, ships which have been disposed from US service have no listed status. Ships in the precommissioning category include ships under construction or on order.

Historical overview[edit]

This list demonstrates that the US Navy constantly recycles and repurposes its small craft for new roles. Some craft on this list have had as many as six such conversions in their history. Some of these conversions have been surprising from an environmental viewpoint, such as the conversion of fuel oil barges into water barges. Some conversions have been surprising from an economic viewpoint, such as the simultaneous conversions of open barges to covered barges during the conversions of covered barges to open barges, which can be justified only by relatively high transportation costs.

The District auxiliary, miscellaneous (YAG) designation has been used as a cover for at least two ships employed in classified tests of biological, chemical, and nuclear weapons (aka WMD).

Some of these vessels have held prior or later classifications as unclassified miscellaneous (IX), or more rarely as auxiliaries miscellaneous (AG, T-AG).

Ash barges (YA)[edit]

YA-18, ex-YO-37, ex-YE-14, later YCF-5, YFN-570
YA-43, later YF-56
YA-44, later YF-54
YA-52, lost due to enemy action in the Philippines^[1]
YA-59, lost due to enemy action in the Philippines
YA-65, lost due to enemy action in the Philippines

District auxiliary, miscellaneous (YAG)[edit]

For similar lists of 'miscellaneous' ships see

List of auxiliaries of the United States Navy § Miscellaneous ships (AG, T-AG)

and

List of unclassified miscellaneous vessels of the United States Navy (IX)

Tatoosh (YAG-1)^[2]
YAG-2, lost due to enemy action in the Philippines^[1]^[3]
YAG-3, lost due to enemy action in the Philippines^[4]
YAG-4, sunk by Japanese gunfire in South Harbor, Corregidor, 12 April 1942^[5]
YAG-5^[6]
YAG-6^[7]
YAG-7, patrol vessel^[8]
YAG-8, later AG-47, weather ship^[9]
YAG-9, later AG-48, weather ship, sunk 9 September 1942 by U-755^[10]
YAG-10, acquisition canceled^[11]
Baranof (YAG-11), cargo ship for Alaskan bases^[12]
YAG-12, liberty ferry and barracks ship^[13]
YAG-13, ex-Palace (PYc-33)^[14]
YAG-14, ex-Tourist (PYc-32)^[15]
Mindoro (YAG-15)^[16]
YAG-16, cargo ship for Bahamian and Cuban bases^[17]
YAG-17, moored attack transport simulator, wrecked in the 1944 Great Atlantic hurricane 14 September 1944^[18]
YAG-18, refrigerator cargo ship for Caribbean bases^[19]
YAG-19, cargo ship for Caribbean bases^[20]
YAG-20, ex-YHB-15, cargo ship for Caribbean bases^[21]
YAG-21, ex-YHB-17, cargo ship for Caribbean bases, grounded near Key West 2 March 1945^[22]
YAG-22, later YF-568^[23]
Ensenada (YAG-23), refrigerator cargo ship^[24]
Awahou (YAG-24)^[25]
Port Whangarei (YAG-25)^[26]
Taupata (YAG-26)^[27]
Kohi (YAG-27), sailing scow^[28]
YAG-28, cargo ship for Caribbean bases^[29]
YAG-29, ex-CG-4^[30]
YAG-30^[31]
YAG-31^[32]
Christiana (YAG-32), seaplane tender, ex-IX-80^[33]
YAG-33, ex-USAS FS-80^[34]
YAG-34, torpedo range tender^[35]
Nashawena (YAG-35), ex-AG-142, cable repair craft
Floyd W. Spencer (YAG-36), experimental minesweeper ^[36]
John L. Sullivan (YAG-37), experimental minesweeper ^[37]
Edward Kavanagh (YAG-38), experimental minesweeper ^[38]
George Eastman (YAG-39), WMD test ship^[39]^[40]^[41]
Granville S. Hall (YAG-40), WMD test ship^[39]^[41]
YAG-41 through YAG-44, not used, intended for first 4 Guardian-class AGR radar picket ships^[11]
YAG-45 through YAG-55, not used, planned ship acquisitions canceled^[11]
YAG-56, not used, intended for USS Compass Island (E-AG-153)^[11]
YAG-57, not used, intended for USS Observation Island (E-AG-154)^[11]
YAG-58, not used, intended for USS Francis Marion (APA-249)^[11] or for Jupiter ballistic missile ship^[42]
Michael Moran (YAG-59)^[11]
Butternut (YAG-60), ex-AN-9, ANL-9, missile range ship^[43]
Monob One (YAG-61), ex-IX-309^[44]
Deer Island (YAG-62)^[45]
Saluda (YAG-87), sailing yawl, sound test ship, ex-IX-87^[46]

Radar picket ships (YAGR)[edit]

Guardian-class radar picket ship

All Guardian-class ships were reclassed as AGR in 1958; they were originally intended to be classed as District auxiliaries, miscellaneous (YAG) - see YAG-41 through YAG-44 - but this was not done.

Open barges (YC, YCK)[edit]

YC-119, later YFN-48
YC-164, later YR-5
YC-174, later YFN-86, lost Philippines 1942
YC-179, later YFN-162
YC-181, lost due to enemy action in the Philippines 1942
YC-203, later YFN-211
YC-210, later YF-53
YC-263, later YFN-674, YHB-36
YC-239, later YFN-198
YC-246, later YFN-200
YC-261, later YFN-250
YC-264, later YFN-251
YC-271, ex-YE-39, later YFN-243
YC-273, later YFN-244
YC-274, later YR-20
YC-275, later YFN-208
YC-276, later YFN-209
YC-278, later YFN-248
YC-280, ex-YFN-239, later YRB-14
YC-282, ex-YE-38, later YFN-242
YC-284, later YFN-254
YC-285, later YFN-246
YC-291, later YFN-225
YC-292, ex-YE-34, later YFN-238
YC-294, later YR-21
YC-295, later YFN-253
YC-296, later YR-22
YC-303, later YFN-187
YC-305, later YFN-255
YC-311, later YFN-247
YC-315, later YFN-249
YC-321, later YFN-217
YC-326, later YFN-70
YC-327, later YFN-71
YC-328, later YFN-90
YC-329, later YFN-91
YC-331, later YFN-74
YC-332, later YFN-75
YC-333, later YFN-76
YC-351, later YFN-83
YC-352, later YFN-84, destroyed 1943
YC-353, later YFN-85
YC-363, later YFN-88
YC-364, later YFN-89
YC-383, later YFN-199
YC-412, later YFN-111
YC-415, later YCD-1, YOS-1^[47]
YC-442 - sank 11 September 1923^[48]
YC-446, later YFN-87
YC-455, later YR-8
YC-456, later YR-9
YC-462, later YFN-245
YC-463, ex-YPK-4, later YF-672
YC-467, later YFN-218
YC-468, ex-YE-36, later YFN-240
YC-469, ex-YE-37, later YFN-241
YC-473, Operation Wigwam nuclear test participant, destroyed^[40]
YC-480, later YFN-186
YC-484, ex-YE-32, later YFN-236
YC-485, ex-YE-33, later YFN-237
YC-488, later YFN-226
YC-504, later YFN-220
YC-523, lost off Portsmouth New Hampshire 24 February 1944
YC-537, lost due to enemy action in the Philippines 1942
YC-623, later YFN-256
YC-643, lost due to enemy action in the Philippines 1942
YC-644, lost due to enemy action in the Philippines 1942
YC-646, lost due to enemy action in the Philippines 1942
YC-647, lost due to enemy action in the Philippines 1942
YC-648, lost due to enemy action in the Philippines 1942
YC-649, lost due to enemy action in the Philippines 1942
YC-650, later YFN-540
YC-652, lost due to enemy action in the Philippines 1942
YC-653, lost due to enemy action in the Philippines 1942
YC-654, lost due to enemy action in the Philippines 1942
YC-664, lost due to enemy action at Guam December 1941
YC-665, lost due to enemy action at Guam December 1941
YC-666, lost due to enemy action at Guam December 1941
YC-667, lost due to enemy action at Guam December 1941
YC-668, lost due to enemy action at Guam December 1941
YC-669, lost due to enemy action in the Philippines 1942
YC-670, lost due to enemy action at Guam December 1941
YC-671, lost due to enemy action at Guam December 1941
YC-672, lost due to enemy action at Guam December 1941
YC-673, lost due to enemy action at Guam December 1941
YC-674, lost due to enemy action at Guam December 1941
YC-683, lost due to enemy action in the Philippines 1942
YC-685, lost due to enemy action at Guam December 1941
YC-693, lost off Alaska February 1945
YC-701, later YR-23
YC-792, later YFN-1151
YC-714 lost due to enemy action in the Philippines 1942
YC-715 lost due to enemy action in the Philippines 1942
YC-716 lost due to enemy action in the Philippines 1942
YC-717 lost due to enemy action at Guam December 1941
YC-718 lost due to enemy action at Guam December 1941
YC-805, later YFN-1153
YC-813, ex-YF-334
YC-857, lost off Cape Cod Massachusetts 12 November 1943
YC-860, later YFN-676
YC-861, later YFN-677
YC-862, ex-YFN-678, later YRB-10
YC-869, lost off Imperial Beach California 23 March 1943
YC-886, lost at Guantanamo Cuba 3 February 1943
YC-887, lost at Guantanamo Cuba 3 February 1943
YC-891 - sank on 18 April 1945, while under tow by the tug Mauvila (YT-328) off Key West, Florida
YC-898, lost off Key West Florida 29 September 1942
YC-899, lost off Key West Florida 29 September 1942
YC-908, later YFN-1149
YC-912, lost in the North Pacific 13 January 1945
YC-961, lost at Biorka Island May 1945
YC-970, lost in Puget Sound Washington 14 August 1943
YC-1037, ex-YFN-396
YC-1079, later YRB-22, later YR-92
YC-1212, ex-YFN-1008
YC-1213, ex-YFN-1009
YC-1219, ex-YF-586
YC-1220, ex-YF-587, later YRB-13
YC-1272, lost near San Pedro California June 1945
YC-1278, lost off the Atlantic coast 10 March 1943
YC-1291, later YF-1094
YC-1292, later YF-1095
YC-1293, later YF-1096
YC-1294, later YF-1097
YC-1295, later YF-1098
YC-1343, ex-YFN-938
YC-1349, ex-YFN-285
YC-1353, ex-YFN-637
YC-1355, ex-YFN-508
YC-1354, ex-YFN-699
YC-1356, ex-YFN-904
YC-1378, later YFN-1288
YC-1461, ex-YFN-1226
YC-1462, ex-YFN-1227
YC-1463, ex-YFN-1228
YC-1464, ex-YFN-1229
YC-1498, later YPD-45,^[49]
YC-1525, later YLC-5
YC 1596, later YFN-1289
YC-1680, ex-YFN-1195

The YCK hull symbol denoted a wooden barge.

YCK-1, lost due to enemy action at Wake Island, December 1941^[1]
YCK-2, ex-YF-422, lost 5 November 1943
YCK-3, ex-YF-423
YCK-4, ex-YF-424
YCK-5, ex-YF-425
YCK-6, ex-YF-426
YCK-7, ex-YF-427
YCK-8, ex-YF-428, sank 2.7 miles off Key West, Florida on 12 December 1943 while under tow by Army tug LT-4^[50]
YCK-9, ex-YF-429
YCK-10, ex-YF-430
YCK-11, ex-YF-431
YCK-12, ex-YF-432
YCK-13, ex-YF-433
YCK-14, ex-YF-434
YCK-15, ex-YF-435
YCK-16, ex-YF-436
YCK-17, ex-YF-437
YCK-18, ex-YF-438
YCK-19, ex-YF-439
YCK-20, ex-YF-440
YCK-21, ex-YF-441
YCK-22, ex-YF-442

Coaling derricks (YCD)[edit]

YCD-1, ex-YC-415, later YOS-1^[47]

Car floats (YCF)[edit]

YCF-5, ex-YO-37, ex-YE-14, ex-YA-18, later YFN-570
YCF-23, lost en route to Eniwetok March 1945
YCF-29, lost en route to Eniwetok March 1945
YCF-36, lost en route to Eniwetok March 1945
YCF-37, lost en route to Eniwetok March 1945
YCF-42, lost December 1944
YCF-59, lost off Delaware January 1945
YCF-73, later YFN-1126
YCF-81, later YFN-1127
YCF-86, later YFN-1128
YCF-87, later YFN-1129
YCF-88, later YFN-1130
YCF-90, later YFN-1131
YCF-91, later YFN-1132
YCF-92, later YFN-1133
YCF-93, later YFN-1134
YCF-94, later YFN-1135

Aircraft transportation barges (YCV)[edit]

YCV-6, later YFN-1093
YCV-9, Operation Castle nuclear test participant ^[39]

Floating derricks (YD)[edit]

YD-19, lost to enemy action in the Philippines^[1]
YD-23, ex-YR-1
YD-36, ex-YFN-72
YD-37, later YFN-196
YD-39, later YFN-197
YD-43, ex-ID-3507
YD-47, lost to enemy action in the Philippines
YD-56, lost to enemy action in the Philippines
YD-60, lost to enemy action in the Philippines
YD-171, German war prize Schwimmkran nr. 1
YD-222, ex-US Army BD 6652, later IX-533
YD-261

Degaussing craft (YDG)[edit]

Diving tenders (YDT)[edit]

YDT-4, ex-AMc-79
YDT-6, ex-AMc-23
YDT-7, ex-AMc-25
YDT-11, ex-YFN-723, ex-YFNB-12, later YRST-1, IX-526, YR-94
Phoebus (YDT-14), ex-YF-294

Ammunition barges (YE)[edit]

YE-4, later YFN-229
YE-8, later YFN-230, lost 1942
YE-11, later YFN-231
YE-14, ex-YO-37, later YA-18, YCF-5, YFN-570
YE-15, later YFN-232
YE-16, later YFN-233
YE-32, later YC-484, YFN-236
YE-33, later YC-485, YFN-237
YE-34, later YC-292, YFN-238
YE-36, later YC-468, YFN-240
YE-37, later YC-469, YFN-241
YE-38, later YC-282, YFN-242
YE-39, later YC-271, YFN-243

Covered barges (YF, YFN)[edit]

YF barges are self-propelled, YFN barges are not.^[51]

Hull numbers 1 through 256 were built before World War II. ^[52]

YF-4, captured Philippines 1942
YF-5, captured Philippines 1942
YF-6, captured Philippines 1942
YF-23, lost
YFN-48, ex-YC-119
YF-53, ex-YC-210
YF-54, ex-YA-44
YF-55, ex-ferry St. Helena
YF-56, ex-YA-43
YF-57, lost 1921
YFN-70, ex-YC-326
YFN-71, ex-YC-327
YFN-72, later YD-36
YFN-74 ex-YC-331
YFN-75, ex-YC-332
YFN-76, ex-YC-333
YF-77, later YR-11
YFN-83, ex-YC-351
YFN-84, ex-YC-352, destroyed 1943
YFN-85, ex-YC-353
YFN-86, ex-YC-174, lost Philippines 1942
YFN-87, ex-YC-446
YFN-88, ex-YC-363
YFN-89, ex-YC-364
YFN-90, ex-YC-328
YFN-91, ex-YC-329
YFN-111, ex-YC-412
YF-116, ex-ID-755
YF-117, later YR-12
YFN-131, ex-YV-26
YFN-133, ex-YV-31
YFN-135, ex-YV-34
YFN-137, ex-YV-53
YFN-138, ex-YV-60
YFN-162, ex-YC-179
YF-177, lost Philippines 1942
YF-178, lost Philippines 1942
YF-179, lost Philippines 1942
YF-180, lost Philippines 1942
YF-181, lost Philippines 1942
YFN-182, ex-YS-72
YFN-183, ex-YS-73
YFN-184, ex-YS-75
YFN-186, ex-YC-480
YFN-187, ex-YC-303
YFN-196, ex-YD-37
YFN-197, ex-YD-39
YFN-198, ex-YC-239
YFN-199, ex-YC-383
YFN-200, ex-YC-246
YFN-208, ex-YC-275
YFN-209, ex-YC-276
YFN-211, ex-YC-203
YF-212, lost due to enemy action in the Philippines 1942
YFN-217, ex-YC-321
YFN-218, ex-YC-467
YFN-220, ex-YC-504
YF-223, lost due to enemy action in the Philippines 1942
YF-224, lost due to enemy action in the Philippines 1942
YFN-225, ex-YC-291
YFN-226, ex-YC-488
YFN-229, ex-YE-4
YFN-230, ex-YE-8, lost due to enemy action in the Philippines 1942
YFN-231, ex-YE-11
YFN-232, ex-YE-15
YFN-233, ex-YE-16
YFN-236, ex-YE-32, ex-YC-484
YFN-237, ex-YE-33, ex-YC-485
YFN-238, ex-YE-34, ex-YC-292
YFN-239, later YC-280, later YRB-14
YFN-240, ex-YE-36, ex-YC-468
YFN-241, ex-YE-37, ex-YC-469
YFN-242, ex-YE-38, ex-YC-282
YFN-243, ex-YE-39, ex-YC-271
YFN-244, ex-YC-273
YFN-245, ex-YC-462
YFN-246, ex-YC-285
YFN-247, ex-YC-311
YFN-248, ex-YC-278
YFN-249, ex-YC-315
YFN-250, ex-YC-261
YFN-251, ex-YC-264
YFN-253, ex-YC-295
YFN-254, ex-YC-284
YFN-255, ex-YC-305
YFN-256, ex-YC-623

Hull numbers 257 through 1153 were built during World War II.^[53]^[54]

YF-257, later YFRT-257
YFN-258, later YRB-1
YFN-268, later YFND-5, later IX-530
YFN-271, later YRB-8
YFN-285, later YC-1349
YF-287, later YFRT-287
YF-294, later Phoebus (YDT-14)
YFN-298, later YRB-25
YFN-310, later YRB-2
YFN-312, later YRB-7
YFN-317, lost due to enemy action in the Philippines 1942
YFN-318, ex-AMC-60
YF-331, ex-Intrepid, later YSR-42
YFN-333, later YRR-3
YF-334, later YC-813
YFN-365, later YRL-5, YR-83
YFN-373, wrecked on Tanaga Island 1946
YF-379 through YF-391, canceled
YFN-396, later YC-1037
YF-401, lost 20 June 1943
YFN-402, later YRB-17
YFN-409, later YRB-18
YF-411, later YFRT-411
YF-415, exploded and sank 11 May 1944
YF-418, later YFRT-418
YF-419, later YFRT-419
YF-422, later YCK-2
YF-423, later YCK-3
YF-424, later YCK-4
YF-425, later YCK-5
YF-426, later YCK-6
YF-427, later YCK-7
YF-428, later YCK-8
YF-429, later YCK-9
YF-430, later YCK-10
YF-431, later YCK-11
YF-432, later YCK-12
YF-433, later YCK-13
YF-434, later YCK-14
YF-435, later YCK-15
YF-436, later YCK-16
YF-437, later YCK-17
YF-438, later YCK-18
YF-439, later YCK-19
YF-440, later YCK-20
YF-441, later YCK-21
YF-442, later YCK-22
YF-447, later YFR-447
YF-451, later YFR-451
YFN-462, later YFT-6
YFN-470, later YRB-3 (sources differ)
YFN-474, later YRB-3 (sources differ^[53])
YFN-475, later YRB-4
YFN-476, destroyed 1947
YFN-477, later YRB-5
YFN-480, later YRB-6
YF-487, lost in the Caribbean Sea 18 July 1943
YFN-493, later YRB-9
YFN-508, later YC-1355
YFN-511, later YRB-15
YFN-515, later YRB-19
YFN-516, later YRB-20
YF-519, later YFRT-519
YF-520, later YFRT-520
YF-523, later YNG-42
YF-528, later YNG-43
YFN-540, ex-YC-650
YF-568, ex-YAG-22
YFN-570, ex-YO-37, ex-YE-14, ex-YA-18, ex-YCF-5
YF-575, lost off Atlantic City, New Jersey, 6 May 1943
YF-579, lost at San Francisco, California, 20 September 1943
YF-586, later YC-1219
YF-587, later YC-1220, YRB-13
YFN-589, lost
YF-608, later APL-14
YF-609, later APL-15
YFN-624, later YFNB-7
YF-628, later APL-17
YF-629, later APL-18
YF-630, later APL-19, sunk as target 2002
YF-631, later APL-20
YF-632, later APL-21
YF-633, later APL-22
YFN-637, later YC-1353
YFN-653, later YFP-5
YFN-655, later YFP-6
YF-672, ex-YPK-4, ex-YC-463
YFN-674, ex-YC-263, later YHB-36
YF-675, canceled
YFN-676, ex-YC-860
YFN-677, ex-YC-861
YFN-678, later YC-862, later YRB-10
YF-681 - damaged in the 10 November 1944 explosion of USS Mount Hood (AE-11) in Seeadler Harbor at Manus Island
YFN-685, later YRR-4, YR-89
YFN-699, later YC-1354
YFN-701, lost 1946
YFN-703, lost 1946
YFN-713, later YRB-28
YFN-723, later YFNB-12, YDT-11, YRST-1, IX-526, YR-94
YFN-724, lost off the Farallone Islands 22 March 1945
YFN-725, lost off the Farallone Islands 22 March 1945
YFN-740, later YRBM-19, YFNB-19, YRBM-56
YF-744 - grounded at Buckner Bay, Okinawa, by Typhoon Louise in October 1945
YFN-751, later YFNB-26, YRBM-20
YFN-752, later YFNB-27
YFN-753, later YFNB-28
YF-757 - sank at Buckner Bay, Okinawa, by Typhoon Louise in October 1945
YFN-775, lost 1946
YFN-777, lost at Eniwetok, 6 August 1945
YFN-779, lost 1946
YFN-780, lost 1946
YFN-811, Project SHAD asset^[41]
YFN-845, later YRB-21
YF-852, later YFRT-523
YF-853, canceled
YF-854, later Littlehales (AGSC-15)
YF-855 through YF-860 canceled
YF-866, sunk as target 1988
YFN-888, deployed to South Vietnam, sunk as target 1987
YFN-889, deployed to South Vietnam, possibly transferred
YFN-890, deployed to South Vietnam
YFN-894, canceled
YFN-895, canceled
YFN-899, later YFNB-30, YR-93
YFN-904, later YC-1356
YFN-926, lost en route to Pearl Harbor, 8 March 1945
YFN-934, Operation Castle nuclear test participant^[39]
YFN-938, later YC-1343
YFN-961, later YRB-16
YFN-971, lost 1946
YFN-975, canceled
YFN-976, cancelled
YFN-985, later YFP-7
YFN-986, later YFP-8
YFN-1007, lost 1948
YFN-1008, later YC-1212
YFN-1009, later YC-1213
YF-1017 through YF-1022, canceled
YF-1023, later YFL-25
YF-1053, canceled
YFN-1062, later YFNB-35, YPD-46^[55]
YFN-1064, later YFNB-37, YRB-30
YF-1079, ex-LST-39, ran aground and damaged at Buckner Bay, Okinawa, during Typhoon Louise in October 1945
YF-1080, ex-YP-90
YF-1092, later YFN-1092, YFNX-13, YRST-5, YRB-29
YF-1094, ex-YC-1291
YF-1095, ex-YC-1292
YF-1096, ex-YC-1293
YF-1097, ex-YC-1294
YF-1098, ex-YC-1295
YF-1099 through YF-1123, canceled
YFN-1124, ex-sonar barge
YFN-1125, ex-Sonar Barge
YFN-1126, ex-YCF-73
YFN-1127, ex-YCF-81
YFN-1128, ex-YCF-86
YFN-1129, ex-YCF-87
YFN-1130, ex-YCF-88
YFN-1131, ex-YCF-90
YFN-1132, ex-YCF-91
YFN-1133, ex-YCF-92
YFN-1134, ex-YCF-93
YFN-1135, ex-YCF-94
YFN-1149, ex-YC-908
YFN-1151, ex-YC-792
YFN-1152, ex-YP-629, later YFRN-1152^[56]
YFN-1153, ex-YC-805

Hull numbers starting with 1154 were built after World War II.^[57]

YFN-1162, later YFP-13
YFN-1170, later YRB-27
YFN-1192, later YLC-1
YFN-1195, later YC-1680
YFN-1207, later YFP-11
YFN-1209, later YFND-31
YFN-1216, later YFP-12
YFN-1226, later YC-1461
YFN-1227, later YC-1462
YFN-1228, later YC-1463
YFN-1229, later YC-1464
YFN-1253, later YFND-30
YFN-1259, later IX-527, submarine test support barge
YFN-1268, later YR-96
YFN-1288, ex-YC-1378
YFN-1289, ex-YC 1596

Yard ferry boats or launches (YFB)[edit]

Asp (YFB-1)
Admiral Glass (YFB-2)
Berceau (YFB-3)
Cyane (YFB-4)
Ripple (YFB-5)
Despatch (YFB-6)
Leslie (YFB-7)
Navy Yard (YFB-8)
Wave (YFB-10)
Callao (YFB-11)
San Felipe (YFB-12), lost due to enemy action at Luzon, Philippines^[1]
Christine (YFB-13)
Aquidneck (YFB-14)
Conanicut (YFB-15)
Manuwai (YFB-16)
Nihoa (YFB-17)
Monhegan (YFB-18)
Vashon (YFB-19)
League Island (YFB-20)
Calistoga (YFB-21)
Jewel (YFB-22)
Senibeil (YFB-23)
Treasure (YFB-24)
Captiva (YFB-25)
Falkner (YFB-26)
Adak (YFB-28)
Pilgrim II (YFB-30)
Gould Island (YFB-31)
Green Island (YFB-32)
Santa Rosa (YFB-33)
San Leandro (YFB-34)
Sequin (YFB-35)
Staten (YFB-36)
Dewees (YFB-37)
Seabrook (YFB-38)
Calodosi (YFB-39)
Quonset (YFB-40)
Lillian Anne (YFB-41)
Asquith (YFB-42)
Colington (YFB-43)
Royston (YFB-44)
Sheffield (YFB-45)
North (YFB-46)
YFB-47
YFB-48
Metinic (YFB-49)
Magdalena (YFB-54)
Delta King (YFB-55), ex-YHB-6
Delta Queen (YFB-56), ex-YHB-7
San Felipe (YFB-57)
Lacosta (YFB-58)
Arrowsic (YFB-59)
YFB-60
YFB-65
YFB-66
San Felipe (YFB-79)
YFB-82
Waa Hele Honoa (YFB-83)
YFB-86
Moko Holo Hele (YFB-87)
YFB-88 through YFB-91
Leeward (YFB-92) [A], Guantanamo Bay Naval Base^[58]
Windward (YFB-93) [A], Guantanamo Bay^[59]
YFB-94
YFB-95
YFB-132
Dart (YFB-308)
Santa Rita (YFB-681)
Rosal (YFB-682), lost due to enemy action at Luzon, Philippines^[1]
Camia (YFB-683), lost due to enemy action at Cavite, Luzon, Philippines^[1]
Dapdap (YFB-684), lost due to enemy action at Luzon, Philippines^[1]
Rivera (YFB-685), lost due to enemy action at Luzon, Philippines^[1]
Magdalena (YFB-687), lost due to enemy action at Luzon, Philippines^[1]
Yacal (YFB-688), lost due to enemy action at Luzon, Philippines^[1]
Taposa (YFB-1163)
Patchogue (YFB-1227), ex-ID-1227
YFB-1504
YFB-1516
Porpoise (YFB-2047), ex-ID-2047
YFB-2494
Atlantic (YFB-3268), ex-ID-3268
YFB-4753

Yard floating drydocks (YFD)[edit]

All YFDs were reclassified as AFDMs in 1945 (see List of auxiliaries of the United States Navy § Medium auxiliary floating dry docks (AFDM)).

Dewey (YFD-1), scuttled 8 April 1942 in the Philippines, raised by the Japanese and sunk again by US aircraft on 13 November 1944
YFD-2
YFD-3
YFD-4
YFD-5
YFD-6
YFD-7 through YFD-19
YFD-20, lost off California 31 January 1943^[1]
YFD-21
YFD-22 through YFD-61
YFD-62
YFD-63
YFD-64
YFD-65
YFD-66
YFD-67
YFD-68 through YFD-70
YFD-71
YFD-72 through YFD-82

Large covered barges, non-self propelled (YFNB)[edit]

YFNB-7, ex-YFN-624
YFNB-12, ex-YFN-723, Operation Wigwam nuclear test participant,^[40] later YDT-11, YRST-1, IX-526, YR-94
YFNB-13, Operation Wigwam participant^[40]
YFNB-19, ex-YFN-740, ex-YRBM-19, later YRBM-56
YFNB-21, later YRBM-16
YFNB-24, later YRBM-17
YFNB-26, ex-YFN-751, later YRBM-20
YFNB-27, ex-YFN-752
YFNB-28, ex-YFN-753
YFNB-29, Operation Wigwam participant^[40]
YFNB-30, ex-YFN-899, later YR-93
YFNB-35, ex-YFN-1062, later YPD-46^[55]
YFNB-37, ex-YFN-1064, later YRB-30
YFNB-42, later YRBM-47

Dry dock companion craft, non-self propelled (YFND)[edit]

YFND-5, ex-YFN-268, later IX-530
YFND-30, ex-YFN-1253
YFND-31, ex-YFN-1209

Barges, special purpose, non-self propelled (YFNX)[edit]

YFNX-13, ex-YF-1092, ex-YFN-1092, later YRST-5, later YRB-29

Floating power barges (YFP)[edit]

YFP-5, ex-YFN-653
YFP-6, ex-YFN-655
YFP-7, ex-YFN-985
YFP-8, ex-YFN-986
YFP-11, ex-YFN-1207
YFP-12, ex-YFN-1216
YFP-13, ex-YFN-1162

Refrigerated covered barges (YFR, YFRN)[edit]

YFR barges are self-propelled, YFRN barges are not.

The YFR and YFRN hull numbers are part of the YF and YFN sequence.

YFR-443, ex-YF-443, transferred to Columbia^[60]
YFR-447, ex-YF-447
YFR-451, ex-YF-451, lost by explosion and fire, 14 miles northwest of Boston MA. harbor, 11 May 1944^[61]
YFRN-833 through YFRN-841
YFR-888 through YFR-890
YFRN-997
YFRN-1152, ex-YP-629, ex-YFN-1152^[56]

Range tenders (YFRT)[edit]

YFRT-257, ex-YF-257
YFRT-287, ex-YF-287
YFRT-411, ex-YF-411
YFRT-418, ex-YF-418
YFRT-419, ex-YF-419
YFRT-519, ex-YF-519
YFRT-520, ex-YF-520
YFRT-523, ex-YF-852
YFRT-524, ex-T-AG-161

Torpedo transportation barges (YFT)[edit]

YFT-6, ex-YFN-462

Harbor utility craft (YFU)[edit]

Most if not all of the early YFU vessels were LCUs which had been retired from amphibious duties due to age.

YFU-71-class: 11 "Skilak" lighters purchased as Commercial off-the-shelf for the Vietnam War^[62]

YFU-71, lead ship of class
YFU-73, transferred to Cambodia
YFU-78, destroyed in rocket attack, Da Nang Bridge Ramp, Vietnam, 1969, with loss of most of the crew
YFU-79, later Baylander (IX-514), converted to a helicopter Landing Ship in 1986 for pilot training, nicknamed the "world's smallest aircraft carrier"
YFU-81, transferred to Panama
YFU-82, later IX-506

Garbage barges (YG, YGN)[edit]

YG barges are self-propelled, YGN barges are not.

YG-5^[63]
YG-17, Pearl Harbor attack participant^[64]
YG-22, lead ship of class
YG-29^[65]
YG-39, lost 27 September 1944^[1]
YG-44, lost at Pearl Harbor, 7 February 1945^[1]
YG-51^[66]
YG-53^[67]
YGN-70^[68]

Ambulance boats / Small medical support vessels (YH)[edit]

Houseboats (YHB)[edit]

Delta King (YHB-6), later YFB-55
Delta Queen (YHB-7), later YFB-56
YHB-10, ex freighter Domingo Nazabel I, stationed at French Frigate Shoals August 1942 - March 1945, sunk nearby as target.^[69]^[70]
YHB-15, later YAG-20
YHB-17, later YAG-21
YHB-36, ex-YC-263, ex-YFN-674

Salvage lift craft, heavy (YHLC)[edit]

Crilley (YHLC 1)^[71]
Crandall (YHLC-2)^[72]

Heating scows (YHT)[edit]

Open landing barges (YLA)[edit]

Salvage lift craft (YLC)[edit]

YLC-1, ex-YFN-1192
YLC-5, ex-YC-1525^[73]

Salvage lift craft, light (YLLC)[edit]

YLLC-1, ex-LCU-1348, transferred to South Vietnam^[74]

Dredges (YM, YMN)[edit]

YM dredges are self-propelled, YMN dredges are not.

YM-2^[75]
YM-4 lost due to enemy action in the Philippines^[1]
YM-5, scavenged to build YM-11
YM-11^[76]
YM-13, captured at Guam 10 December 1941^[77]
YM-37^[78]
Seabee (YM-38)^[79]

Mud scows (YMD)[edit]

YMD-8^[76]

Salvage lift craft medium (YMLC)[edit]

YMLC-3, ex-LSM-551, ex-Salvager (ARS(D)-3)
YMLC-4, ex-LSM-552, ex-Windlass (ARS(D)-4)

Motor mineplanters (YMP)[edit]

Auxiliary motor mine sweepers (YMS)[edit]

Yard motor tugs (YMT)[edit]

YMT-1 through YMT-31

Yard net tenders (YN)[edit]

All specially-built yard net tenders were reclassified in 1944 as auxiliary net laying ships, see List of auxiliaries of the United States Navy § Net laying ships (AN) for the reclassification result. The 24 impressed tugboats were reclassed as Net tender tugs (YNT), later some as tugboats (YTB or YTL).

Aloe-class net laying ships

The 24 impressed commercial tugboats.

Hopocan (YN-33)
Menewa (YN-34)
Oneka (YN-35)
Mahaska (YN-36)
Keshena (YN-37)
Canasatego (YN-38)
Donacona (YN-39)
Mankato (YN-40)
Metea (YN-41)
Okisko (YN-42)
Tahchee (YN-43)
Tamaha (YN-44)
Wapasha (YN-45)
Namontack (YN-46)
Cockenoe (YN-47)
Katlian (YN-48)
Neswage (YN-49)
Annawan (YN-50)
Metacom (YN-51)
Tamaque (YN-52)
Marin (YN-53), ex-AMc-31
Noka (YN-54)
Nawat (YN-55)
Wapello (YN-56)

Ailanthus-class net laying ships

Cohoes-class net laying ships

Net gate craft (YNG)[edit]

YNG-1 ^[80]
YNG-20, ex-AM-17
YNG-42, ex-YF-523
YNG-43, ex-YF-528

Net tender tugs (YNT)[edit]

All these ships were former Yard net tenders (YN)

Hopocan (YNT-1)
Menewa (YNT-2)
Oneka (YNT-3)
Mahaska (YNT-4)
Keshena (YNT-5)
Canasatego (YNT-6)
Donacona (YNT-7)
Mankato (YNT-8)
Metea (YNT-9)
Okisko (YNT-10), later YTL-735
Nawat (YNT-11)
Tamaha (YNT-12)
Wapasha (YNT-13), later YTB-737
Namontack (YNT-14), later YTB-738
Cockenoe (YNT-15)
Katlian (YNT-16)
Neswage (YNT-17)
Annawan (YNT-18)
Metacom (YNT-19)
Tamaque (YNT-20)
Marin (YNT-21)
Noka (YNT-22)
Nawat (YNT-23)
Wapello (YNT-24)

Fuel oil barges (YO, YON)[edit]

YO barges are self-propelled, YON barges are not.

YO-10, ex-YW-2, later YR-19
YO-37, later YE-14, YA-18, YCF-5, YFN-570
YO-41 - sank 22 February 1942 during enemy action in the Philippines^[81]
YO-42 - sank 22 February 1942 during enemy action in the Philippines
YO-61, Operation Castle nuclear test participant^[39]
USS Syncline (YO-63) - sank in 1972 north of Tahiti^[82]
YO-64 - sank due to enemy action in the Philippines in January 1942^[83]
YO-77 - damaged in the 10 November 1944 explosion of USS Mount Hood (AE-11) in Seeadler Harbor at Manus Island
YO-120, Operation Castle participant^[39]
YO-146 - sank in accident July 1957
YO-156 - lost at Sitka, Alaska, in May 1945
YO-157 - lost at Sitka, Alaska in May 1945
YO-159 - torpedoed and damaged 250 nautical miles (460 km) east of Espiritu Santo by Ro-42 on 14 January 1944, scuttled the following day by USS PC-1138^[84]^[85]
YON-160 - sank in Operation Crossroads as an atomic bomb target at Bikini Atoll on 25 July 1946
YO-161 - sank at Eniwetok 29 November 1946
YON-184 - sank at Eniwetok in a typhoon in September 1946^[86]
YO-185 - sank off Saipan 16 March 1946
YO-186 - sank off Guam 5 April 1948
YON-187, later YWN-148
YO-196, ex-YOGN-196
YON-252, ex-YOGN-123
YON-367, ex-YOGN-119

Gasoline barges (YOG, YOGN)[edit]

YOG barges are self-propelled, YOGN barges are not.

YOG-32, later YWN-157
YOG-33, transferred to South Vietnam^[87]
YOG-42 - under tow by USS Navajo (AT-64) when Navajo was torpedoed and sunk by Japanese submarine I-39 on 12 September 1943, 150 miles East of Espiritu Santo, recovered by USS Sioux (AT-75), later YOGN-42, intentionally beached on Lanai, Hawaiian Islands in 1950^[88]
YOG-56, transferred to South Vietnam
YOG-66, transferred to South Vietnam
YOG-71, transferred to South Vietnam
YOG-76 - sank on 13 November 1969 in Cua Viet Cove, South Vietnam after two underwater explosions hit her, refloated and taken to Da Nang, South Vietnam, not repaired due to severe damage^[89]
YOGN-82, Operation Castle participant^[39]
YOG-80, transferred to South Vietnam
YOG-83 - sank off Kwajalein 16 September 1948
YOG-84 - lost during typhoon at sea off Saipan 14 November 1948
YOG-93, later IX-523 (training hulk for boarding party tactics)
YOGN-116, later YWN-156
YOGN-119, later YON-367
YOGN-123, later YON-252
YOGN-125, ex-YWN-154, later YON
YOG-131, transferred to South Vietnam
YOGN-196, later YO-196

Oil storage barges (YOS)[edit]

YOS-1, ex-YC-415, ex-YCD-1

Patrol craft (YP)[edit]

YP-3, ex-USS Sanda
USS Milan (YP-6), ex-WCG-209
YP-10, ex-CG-194
YP-15, ex-CG-149
YP-16, ex-CG-267, destroyed 10 December 1941 at Guam
YP-17, ex-CG-275, captured 10 December 1941 at Guam
YP-18, ex-CG-263
YP-19, ex-CG-177
YP-26, ex-CG-252, destroyed by an explosion in 1942 while beached in a shipyard in the Panama Canal Zone
YP-29, ex-CG-116^[90]
YP-45, ex-CG-133
YP-49, ex-CG-182
YP-51, ex-CG-261

During World War II many private fishing and United States Fish & Wildlife Service (US FWS) vessels were pressed into naval service as patrol craft. A small number would be modified for delivering refrigerated food to small isolated island bases, most without any reclassification.

YP-72, ex-Cavalcade, wrecked in Kuluk Bay, Alaska on 17 February 1943^[91]
YP-73, ex-Corsair, wrecked in Kodiak, Alaska, on 15 January 1945, 10 killed
YP-74, ex-Endeavor, sunk in collision off Unimak Island, Alaska on 6 September 1942, 4 killed
YP-77, ex-PC-528
YP-90, later YF-1080
YP-105, ex-PC-510
YP-148, ex-Western Queen
YP-150, later AMc-149, IX-177
YP-152, ex-Western Traveler
YP-153, ex-Waldero
YP-155, ex-Storm
YP-179, ex-SP-179
YP-198, ex-SP-588, ex-US FWS Eider
YP-199, ex-US FWS Kittiwake
YP-200, ex-SP-624, ex-US FWS Widgeon
YP-239 - wrecked at Buckner Bay, Okinawa, by Typhoon Louise in October 1945
YP-214, ex-SP-214
YP-251, ex-Foremost
YP-258, later PYc-30
YP-278, ex-Liberty, small refrigerated cargo vessel
YP-279, ex-Navigator, foundered in heavy weather off Townsville, Australia, on 5 September 1943
YP-284, ex-Endeavor, sunk by Japanese destroyers off Guadalcanal on 25 October 1942, 1 killed
YP-289 - wrecked at Buckner Bay, Okinawa, by Typhoon Louise in October 1945
YP-290, ex-Picoroto
YP-345, ex-Yankee, disappeared between French Frigate Shoals and Midway Island on 31 October 1942, 17 killed
YP-346, ex-Prospect, damaged and beached by Japanese 9 September 1942, destroyed 10 September 1942, 1 killed
YP-375, ex-AMb-17, later IX-199^[92]
YP-389, ex-Cohasset, ex-AMc-202, sunk by U-701 near Diamond Shoals on 19 June 1942, 6 killed
YP-399, ex-Big Dipper
YP-400
YP-422, ex-Mist, briefly commanded by L. Ron Hubbard
YP-425 Brave, ex-PYc-34^[93]
YP-448 - later IX-200
YP-449 - later IX-201
YP-506, ex-ID-1217
YP-617 - small refrigerated cargo vessel
YP-618 - small refrigerated cargo vessel
YP-629, later YFN-1152, YFRN-1152^[56]
YP-663, ex-SP-663 (duplicate number from after WWI)
YP-714, ex-SP-714 (duplicate number from after WWI)

Later purpose-built yard patrol craft would be assigned mainly to train US Naval Academy and US Merchant Marine Academy midshipmen.

YP-654 through YP-675
YP-676 through YP-682
YP-683 through YP-702
YP-703 through YP-708

Floating pile drivers (YPD)[edit]

YPD-22, lost due to enemy action in the Philippines^[1]
YPD-36^[94]
YPD-37, ex-YSD-61^[95]
YPD-45, ex-YC-1498^[49]
YPD-46, ex-YFN-1062, ex-YFNB-35^[55]

Pontoon storage barges (YPK)[edit]

YPK-4, later YC-463, YF-672
YPK-6, lost due to enemy action in the Philippines
YPK-7, lost due to enemy action in the Philippines

Floating workshops (YR)[edit]

YR-1, later YD-23^[96]
YR-2
YR-3
YR-4, reported missing
YR-5, ex-YC-164
YR-6
YR-7
YR-8, ex-YC-455
YR-9, ex-YC-456
YR-10
YR-11, ex-YF-77
YR-12, ex-YF-117
YR-13 through YR-18
YR-19, ex-YW-2, ex-YO-10
YR-20, ex-YC-274
YR-21, ex-YC-294
YR-22, ex-YC-296
YR-23, ex-YC-701
YR-24
YR-25
YR-26, ex-YRR-5
YR-27 through YR-30
YR-31, later YRR-7, later YR-90
YR-32, later YRR-8
YR-33 through YR-35
YR-36, later YRB-31, later YRBM-54
YR-37
YR-38
YR-39, later YRR-6
YR-40
YR-41
YR-42, ex-YTT-3
YR-43, lost in the Gulf of Alaska, 28 March 1945^[1]
YR-44, later YRBM-48
YR-45
YR-46, later YRBM-49
YR-47
YR-48
YR-49, later YRR-1
YR-50, later YRBM-50
YR-51
YR-52, later YRDM-1
YR-53, later YRDM-2
YR-54, later YRDM-3, YRR-13
YR-55, later YRDH-1, later IX-528 submarine test support barge
YR-56, later YRDH-2
YR-57, later YRDH-3, later YRR-11
YR-58
YR-59
YR-60, later YRBM-51
YR-61
YR-62
YR-63, later YRB-36
YR-64 through YR-66
YR-67, later YRB-32
YR-68, later YRB-34
YR-69 through YR-72
YR-73, later YRB-33
YR-74, later YRR-2
YR-75
YR-76
YR-77, later YRBM-52
YR-78, later YRB-35, later YRBM-55
YR-79, later YRR-10
YR-80, canceled
YR-81, canceled
YR-82, canceled
YR-83, ex-YFN-365, ex-YRL-5
YR-84, ex-FMS 6
YR-85, ex-FMS 387
YR-86, ex-FMS 811
YR-87
YR-88, ex-YR 32, YRR 8
YR-89, ex-YFN-685, ex-YRR-4
YR-90, ex-YR-31, ex-YRR-7
YR-91, later YRBM-53
YR-92, ex-YC-1079, ex-YRB-22
YR-93, ex-YFN-899, ex-YFNB-30
YR-94, ex-YFN-723, ex-YFNB-12, ex-YDT-11, ex-YRST-1, ex-IX-526
YR-95, ex-Nestucca
YR-96, ex-YFN-1268

Repair and berthing barges (YRB)[edit]

YRB-1, ex-YFN-258^[96]
YRB-2, ex-YFN-310
YRB-3, ex-YFN-470 or ex-YFN-474 (sources differ)^[53]^[96]
YRB-4, ex-YFN-475
YRB-5, ex-YFN-477
YRB-6, ex-YFN-480
YRB-7, ex-YFN-312
YRB-8, ex-YFN-271
YRB-9, ex-YFN-493
YRB-10, ex-YFN-678, ex-YC-862
YRB-11, ex-YC-293
YRB-12, ex-YC-312
YRB-13, ex-YF-587, ex-YC-1220
YRB-14, ex-YFN-239, ex-YC-280
YRB-15, ex-YFN-511
YRB-16, ex-YFN-961
YRB-17, ex-YFN-402
YRB-18, ex-YFN-409
YRB-19, ex-YFN-515
YRB-20, ex-YFN-516
YRB-21, ex-YFN-845
YRB-22, ex-YC-1079, later YR-92
YRB-23
YRB-24
YRB-25, ex-YFN-298
YRB-26
YRB-27, ex-YFN-1170
YRB-28, ex-YFN-713
YRB-29, ex-YF-1092, ex-YFN-1092, ex-YFNX-13, ex-YRST-5
YRB-30, ex-YFN-1064, ex-YFNB-37
YRB-31, ex-YR-36, later YRBM-54
YRB-32, ex-YR-67
YRB-33, ex-YR-73
YRB-34, ex-YR-68
YRB-35, ex-YR-78, later YRBM-55
YRB-36, ex-YR-63

Repair, berthing and messing barges (YRBM)[edit]

YRBM-1 through YRBM-15^[96]
YRBM-16, ex-YFNB-21, transferred to South Vietnam^[97]
YRBM-17, ex-YFNB-24
YRBM-18, ex-APL-55
YRBM-19, ex-YFN-740, later YFNB-19, YRBM-56
YRBM-20, ex-YFN-751, YFNB-26
YRBM-21 through YRBM-46
YRBM-47, ex-YFNB-42
YRBM-48, ex-YR-44
YRBM-49, ex-YR-46
YRBM-50, ex-YR-50
YRBM-51, ex-YR-60
YRBM-52, ex-YR-77
YRBM-53, ex-YR-91
YRBM-54, ex-YR-36, ex-YRB-31
YRBM-55, ex-YR-78, ex-YRB-35
YRBM-56, ex-YFN-740, ex-YRBM-19, ex-YFNB-19

Submarine rescue chambers (YRC)[edit]

YRC-4, lost due to enemy action in the Philippines^[1]

Floating dry dock workshops, hull (YRDH)[edit]

YRDH-1, ex-YR-55, later IX-528 submarine test support barge^[96]
YRDH-2, ex-YR-56
YRDH-3, ex-YR-57, later YRR-11
YRDH-4, later YRR-12
YRDH-5 through YRDH-8

Floating dry dock workshops, machine (YRDM)[edit]

YRDM-1, ex-YR-52^[96]
YRDM-2, ex-YR-53
YRDM-3, ex-YR-54, later YRR-13
YRDM-4, later YRR-14
YRDM-5 through YRDM-7
YRDM-8, later YRR-5

Covered barges repair (YRL)[edit]

YRL-5, ex-YFN-365, later YR-83

Radiological repair barges (YRR)[edit]

YRR-1, ex-YR-49^[96]
YRR-2, ex-YR-74
YRR-3, ex-YFN-333
YRR-4, ex-YFN-685, later YR-89
YRR-5, ex-YRDM-8
YRR-6, ex-YR-39
YRR-7, ex-YR-31, later YR-90
YRR-8, ex-YR-32, ex-YR-88
YRR-9
YRR-10, ex-YR-79
YRR-11, ex-YR-57, ex-YRDH-3
YRR-12, ex-YRDH-4
YRR-13, ex-YR-54, ex-YRDM-3
YRR-14, ex-YRDM-4

Salvage craft tenders (YRST)[edit]

YRST-1, ex-YFN-723, ex-YFNB-12, ex-YDT-11, later IX-526, later YR-94
YRST-5, ex-YF-1092, ex-YFN-1092, ex-YFNX-13, later YRB-29

Stevedoring barges (YS)[edit]

YS-72, later YFN-182
YS-73, later YFN-183
YS-75, later YFN-184
YS-88^[98]
YS-110^[98]

Yard seaplane derricks (YSD)[edit]

YSD-1
YSD-2
YSD-4
YSD-6
YSD-7 through YSD-10

YSD-11-class crane ship

YSD-11 through YSD-13
YSD-15 through YSD-27
YSD-29 through YSD-37
YSD-42 through YSD-50
YSD-55
YSD-59 through YSD-60
YSD-61, later YPD-37
YSD-62 through YSD-78

Salvage barges (YSP)[edit]

YSP-44 - sunk 22 February 1942 during enemy action in the Philippines^[99]
YSP-46 through YSP-50 - all sunk 22 February 1942 during enemy action in the Philippines^[1]

Sludge removal barges (YSR)[edit]

YSR-2 - sunk 22 February 1942 during enemy action in the Philippines^[99]
YSR-42, ex-Intrepid, ex-YF-331

Yard tugs (YT)[edit]

Many of these tugs were later assigned YTB, YTL, or YTM classifications.

Wahneta (YT-1)
Iwana (YT-2)
Narkeeta (YT-3)
Unadilla (YT-4)
Samoset (YT-5)
Penacook (YT-6)
Pawtucket (YT-7)
Pentucket (YT-8)
Sotoyomo (YT-9)
Triton (YT-10)
Fortune (YT-11)
Cayuga (YT-12)
Hercules (YT-13)
Lively (YT-14)
Massasoit (YT-15)
Modoc (YT-16)
Mohawk (YT-17)
Nottoway (YT-18)
Nyack (YT-19)
Passaic (YT-20)
Pawnee (YT-21)
Rocket (YT-22)
Sebago (YT-23)
Tecumseh (YT-24)
Vigilant (YT-25)
Wicomico (YT-26)
Wompatuck (YT-27)
Advance (YT-28), ex-ID-3057
Barnett (YT-29)
Bouker No. 2 (YT-30), ex-SP-1275
Saco (YT-31), ex-SP-2725
Catawba (YT-32)
Mendota (YT-33), ex-SP-773
Dreadnaught (YT-34)
Nausett (YT-35)
Choptank (YT-36)
Yuma (YT-37)
John L. Lawrence (YT-38)
Navigator (YT-39)
Nonpareil (YT-40)
Chase S. Osborne (YT-41)
Penobscot (YT-42), ex-SP-982, later YTB-42
Pocomoke (YT-43)
Adirondack (YT-44)
James Wooley (YT-45)
YT-46 through YT-85
YT-86 through YT-101
Alida (YT-102)
Balanga (YT-103)
Banaag (YT-104), lost due to enemy action in the Philippines^[1]
Barcelo (YT-105)
Christine (YT-106)
Iona (YT-107), sunk by Japanese aircraft at Cavite, Luzon, Philippine Islands, 2 January 1942^[1]
Mercedes (YT-108), destroyed to prevent capture at Cavite, Luzon, Philippine Islands, 2 January 1942^[1]
Peoria (YT-109)
Uncas (YT-110), ex-AT-51
YT-111
Active (YT-112)
Diligent (YT-113)
Choctaw (YT-114)
Reindeer (YT-115)
Vaga (YT-116), scuttled to prevent capture off Corregidor, Luzon, Philippine Islands, 5 May 1942^[1]
YT-117
YT-118
Geronimo (YT-119)
Stallion (YT-120)
Arapaho (YT-121)
Tillamook (YT-122)
Wando (YT-123), ex-AT-17, later YTB-123
Chemung (YT-124), ex-AT-18
Undaunted (YT-125)
Challenge (YT-126), ex-SP-1015, ex-AT-59, later YTM-126
Patriot (YT-127)
Powhatan (YT-128)
Osceola (YT-129)
YT-130
USS Massasoit (YT-131)
YT-132
Narkeeta (YT-133)
Wahneta (YT-134)
Cahokia (YT-135)
Tamaroa (YT-136), ex-AT-62, later YTB-136
J. M. Woodworth (YT-137)
Woban (YT-138)
Ala (YT-139)
Wahtah (YT-140)
Heekon (YT-141)
Nokomis (YT-142)
YT-143
YT-144
Montezuma (YT-145)
Hoga (YT-146)
Tazhia (YT-147)
Wenonah (YT-148)
Toka (YT-149)
Woyot (YT-150)
Konoka (YT-151)
YT-152 through YT-169
Alloway (YT-170)
Yaquima (YT-171)
Sparrow (YT-172)
Manistee (YT-173)
Allaquippa (YT-174)
Chekilli (YT-175)
Junaluska (YT-176)
Black Fox (YT-177)
Dekaury (YT-178)
Lone Wolf (YT-179)
Madokawando (YT-180)
Mazapeta (YT-181)
Mawkaw (YT-182)
YT-184 through YT-186
Canonicus (YT-187)
Negwagon (YT-188)
Nepanet (YT-189)
Orono (YT-190)
Osamekin (YT-191)
Pessacus (YT-192)
Sassacus (YT-193)
Squanto (YT-194)
Yonaguska (YT-195)
YT-196
YT-197
YT-198, sunk off Anzio, Italy, 18 February 1944
YT-199 through YT-213
Cahto (YT-215)
Cochise (YT-216)
Ensenore (YT-217)
Achigan (YT-218)
Hatak (YT-219)
Iona (YT-220)
Kabout (YT-221)
Kasota (YT-222)
Mahackemo (YT-223)
Manada (YT-224)
Maquinna (YT-225)
Chaska (YT-226)
Alamingo (YT-227)
Alamuchee (YT-228)
Alarka (YT-229)
YT-230 through YT-237
Bomazeen (YT-238)
YT-239
YT-240
Uncas (YT-242)
YT-243 through YT-245
Tavibo (YT-246)
YT-247, sunk 5 April 1944^[1]
YT-248 through YT-251
Dekanisora (YT-252)
Anacot (YT-253)
Menatonon (YT-254)
Kennesaw (YT-255)
Menoquet (YT-256)
Minooka (YT-257)
Moanahonga (YT-258)
Arivaca (YT-259)
Nasomee (YT-260)
Nawona (YT-261)
Oneyana (YT-262)
Neoga (YT-263)
Awatobi (YT-264)
Hiawatha (YT-265)
Pocahontas (YT-266)
Pogatacut (YT-267)
Red Cloud (YT-268)
Sakarissa (YT-269)
Satanta (YT-270)
Minnehaha (YT-271)
Iwana (YT-272)
Tecumseh (YT-273)
Pokagon (YT-274)
Epanow (YT-275)
Tavibo (YT-276)
Onockatin (YT-277)
Ossahinta (YT-278)
Penacook (YT-279)
Tuscola (YT-280)
Peshewah (YT-281)
Piomingo (YT-282)
Pitchlynn (YT-283)
Neokautah (YT-284)
Poquim (YT-285)
Quinnapin (YT-286)
Sabeata (YT-287)
Sagaunash (YT-288)
Sakaweston (YT-289)
Canocan (YT-290)
YT-291 through YT-324
Mamo (YT-325)
Sacagawea (YT-326)
Haiglar (YT-327)
Mauvila (YT-328)
YT-330
Namequa (YT-331)
YT-332
YT-333
Dekanawida (YT-334)
Dohasan (YT-335)
Skenandoa (YT-336)
Wampatuck (YT-337)
Nesutan (YT-338)
YT-339
YT-340
Tuscarora (YT-341)
YT-342
Swatane (YT-344)
YT-345
YT-346
Oratamin (YT-347)
YT-348
Neomonni (YT-349)
YT-351 through YT-353
Corbitant (YT-354)
YT-355 through YT-358
Pawtucket (YT-359)
YT-360 through YT-363
Sassaba (YT-364)
Segwarusa (YT-365)
Waubansee (YT-366)
Wawasee (YT-367)
Shahaka YT-368, sunk after collision with ABSD-2 during transit from California to Pearl Harbor, Hawaii, 9 May 1944^[1]
Shamokin (YT-369)
Skandawati (YT-370)
Smohalla (YT-371)
Tatarrax (YT-372)
Topenebee (YT-373)
Vaga (YT-374)
Oconostota (YT-375)
Winnetka (YT-376)
Candoto (YT-377)
Chicomico (YT-378)
Canuck (YT-379)
Chanagi (YT-380)
Chepanoc (YT-381)
Coatopa (YT-382)
Cochali (YT-383)
Waneta (YT-384)
Wannalancet (YT-385)
Washakie (YT-386)
Watseka (YT-387)
Connewango (YT-388)
Conohasset (YT-389)
Ganadoga (YT-390)
Itara (YT-391)
Mecosta (YT-392)
Nakarna (YT-393)
Winamac (YT-394)
Wingina (YT-395)
Wovoka (YT-396)
Yanegua (YT-397)
Netakhi (YT-398)
Numa (YT-399)
Otokomi (YT-400)
Owachomo (YT-401)
Panameta (YT-402)
Pitamakan (YT-403)
Coshecton (YT-404)
Cusseta (YT-405)
Kittaton (YT-406)
Lonoto (YT-407)
Minniska (YT-408)
Anamosa (YT-409)
Allamakee (YT-410)
Ponkabia (YT-411)
Conchardee (YT-412)
Portobago (YT-413)
Satago (YT-414)
Secota (YT-415)
Sonnicant (YT-416)
Taconnet (YT-417)
Tensaw (YT-418)
Topawa (YT-419)
Wallacut (YT-420)
Windigo (YT-421)
YT-422
YT-427
YT-428
YT-431
YT-432
YT-434 through YT-436
YT-438
YT-440 through YT-445
YT-448
YT-451
YT-452
YT-454 through YT-457
Resolute (YT-458)/Evea (YT-458)
Edenshaw (YT-459)
Kiasutha (YT-463)
Shabonee (YT-465)
Chipola (YT-466)
YT-482
YT-718

Natick-class

YT-800, ex-YTB-779 [A]
YT-801, ex-YTB-826 [A]

Valiant-class

Rainier-class

Rainier (YT-808) [A]
Agamenticus (YT-809) [A]
Deception (YT-810) [A]
Olympus (YT-811) [A]
Baker (YT-812) [A]
Sentinel (YT-813) [A]

Large harbor tugs (YTB)[edit]

Navigator (YTB-39)
Penobscot (YTB-42)
Wando (YTB-123)
Osceola (YTB-129)
Cahokia (YTB-135)
Tamaroa (YTB-136), ex-AT-62, YT-136, sunk in collision 27 January 1946
Woban (YTB-138)
Ala (YTB-139)
Wahtah (YTB-140)
Heekon (YTB-141)
Nokomis (YTB-142)
Montezuma (YTB-145)
Hoga (YTB-146)
Tazhia (YTB-147)
Wenonah (YTB-148)
Toka (YTB-149)
Woyot (YTB-150)
Konoka (YTB-151)
Yaquima (YTB-171)
Manistee (YTB-173)
Allaquippa (YTB-174)
Chekilli (YTB-175)
Junaluska (YTB-176)
Black Fox (YTB-177)
Dekaury (YTB-178)
Lone Wolf (YTB-179)
Madokawando (YTB-180)
Mazapeta (YTB-181)
Mawkaw (YTB-182)
Negwagon (YTB-188)
Nepanet (YTB-189)
Orono (YTB-190)
Osamekin (YTB-191)
Pessacus (YTB-192)
Sassacus (YTB-193)
Squanto (YTB-194)
Yonaguska (YTB-195)
Cahto (YTB-215)
Cochise (YTB-216)
Ensenore (YTB-217)
Achigan (YTB-218)
Hatak (YTB-219)
Iona (YTB-220)
Kabout (YTB-221)
Kasota (YTB-222)
Mahackemo (YTB-223)
Manada (YTB-224)
Maquinna (YTB-225)
Chaska (YTB-226)
Alamingo (YTB-227)
Alamuchee (YTB-228)
Alarka (YTB-229)
Bomazeen (YTB-238)
Uncas (YTB-242)
Tavibo (YTB-246)
Dekanisora (YTB-252)
Anacot (YTB-253)
Menatonon (YTB-254)
Kennesaw (YTB-255)
Menoquet (YTB-256)
Minooka (YTB-257)
Moanahonga (YTB-258)
Arivaca (YTB-259)
Nasomee (YTB-260)
Nawona (YTB-261)
Oneyana (YTB-262)
Neoga (YTB-263)
Awatobi (YTB-264)
Hiawatha (YTB-265)
Pocahontas (YTB-266)
Pogatacut (YTB-267)
Red Cloud (YTB-268)
Sakarissa (YTB-269)
Satanta (YTB-270)
Minnehaha (YTB-271)
Iwana (YTB-272)
Tecumseh (YTB-273)
Pokagon (YTB-274)
Epanow (YTB-275)
Tavibo (YTB-276)
Onockatin (YTB-277)
Ossahinta (YTB-278)
Penacook (YTB-279)
Tuscola (YTB-280)
Peshawah (YTB-281)
Piomingo (YTB-282)
Pitchlynn (YTB-283)
Neokautah (YTB-284)
Poquim (YTB-285)
Quinnapin (YTB-286)
Sabeata (YTB-287)
Saguanash (YTB-288)
Sakaweston (YTB-289)
Canocan (YTB-290)
Mamo (YTB-325)
Haiglar (YTB-327)
Mauvila (YTB-328)
Namequa (YTB-331)
YTB-332
Dekanawida (YTB-334)
Dohasan (YTB-335)
Wampatuck (YTB-337)
Nesutan (YTB-338)
Tuscarora (YTB-341)
Swatane (YTB-344)
Oratamin (YTB-347)
Pawtucket (YTB-359)
Sassaba (YTB-364)
Segwarusa (YTB-365)
Waubansee (YTB-366)
Wawasee (YTB-367)
Shahaka (YTB-368)
Shamokin (YTB-369)
Skandawati (YTB-370)
Smohalla (YTB-371)
Tatarrax (YTB-372)
Topenebee (YTB-373)
Vaga (YTB-374)
Oconostota (YTB-375)
Winnetka (YTB-376)
Candoto (YTB-377)
Chicomico (YTB-378)
Canuck (YTB-379)
Chanagi (YTB-380)
Chepanoc (YTB-381)
Coatopa (YTB-382)
Cochali (YTB-383)
Waneta (YTB-384)
Wannalancet (YTB-385)
Washakie (YTB-386)
Watseka (YTB-387)
Connewango (YTB-388)
Conohasset (YTB-389)
Ganadoga (YTB-390)
Itara (YTB-391)
Mecosta (YTB-392)
Nakarna (YTB-393)
Winimac (YTB-394)
Wingina (YTB-395)
Wovoka (YTB-396)
Yanegua (YTB-397)
Natahki (YTB-398)
Numa (YTB-399)
Otokomi (YTB-400)
Owachomo (YTB-401)
Panameta (YTB-402)
Pitamakan (YTB-403)
Coshecton (YTB-404)
Cusseta (YTB-405)
Kittaton (YTB-406)
Lonoto (YTB-407)
Minniska (YTB-408)
Anamosa (YTB-409)
Allamakee (YTB-410)
Ponkabia (YTB-411)
Conchardee (YTB-412)
Portobago (YTB-413)
Satago (YTB-414)
Secota (YTB-415)
Sonnicant (YTB-416)
Taconnet (YTB-417)
Tensaw (YTB-418)
Topawa (YTB-419)
Wallacut (YTB-420)
Windigo (YTB-421)
Evea (YTB-458)
Edenshaw (YTB-459)
Kiasutha (YTB-463)
Shabonee (YTB-465)
Chipola (YTB-466)
YTB-492
Abinago (YTB-493)
Alnaba (YTB-494)
Barboncito (YTB-495)
Chahao (YTB-496)
Tlingit (YTB-497)
Cholocco (YTB-498)
Chiquito (YTB-499)
Chohonaga (YTB-500)
Ankachak (YTB-501)
Apohola (YTB-502)
Atanus (YTB-503)
Ayanabi (YTB-504)
Bocachee (YTB-505)
Hombro (YTB-506)
Mimac (YTB-507)
Nootka (YTB-508)
Makah (YTB-509)
Chilkat (YTB-510)
Carascan (YTB-511)
Hastwiana (YTB-512)
Hiamonee (YTB-513)
Lelaka (YTB-514)
Oswegatchie (YTB-515)
Pocasset (YTB-516)
Pokanoket (YTB-517)
Hisada (YTB-518)
Mahoa (YTB-519)
Nacheninga (YTB-520)
Nabigwon (YTB-521)
Sagawamick (YTB-522)
Senasqua (YTB-523)
Tutahaco (YTB-524)
Wabanquot (YTB-525)
Wahaka (YTB-526)
Wahpeton (YTB-527)
Wakonda (YTB-528)
Wickawee (YTB-529)
Aranca (YTB-530)
Yapashi (YTB-531)
Ocmulgee (YTB-532)
Shahaska (YTB-533)
Nadli (YTB-534)
Nahasho (YTB-535)
Nahoke (YTB-536)
Nanigo (YTB-537)
Nashel (YTB-538)
Sikis (YTB-539)
Quileute (YTB-540)
Ozette (YTB-541)
Chegodega (YTB-542)
Etawina (YTB-543)
Yatanocas (YTB-544)
Accohanoc (YTB-545)
Takos (YTB-546)
Yanaba (YTB-547)
Matunak (YTB-548)
Migadan (YTB-549)
Acoma (YTB-701)
Arawak (YTB-702)
Canarsee (YTB-703)
Moratoc (YTB-704)
Pequawet (YTB-705)
Waliaki (YTB-706)
Sanpoil (YTB-707)
Setauket (YTB-708)
Tocobaga (YTB-709)
Tonkawa (YTB-710)
Wabaquasset (YTB-724)
YTB-725
Oneka (YTB-729)
Mahaska (YTB-730)
Cockenoe (YTB-736)
Wapasha (YTB-737), ex-YNT-13
Namontack (YTB-738), ex-YNT-14
Picqua (YTB-739)
Metacom (YTB-740)
Pokagon (YTB-746)
Edenshaw (YTB-752)
Marin (YTB-753)
YTB-754
YTB-755
Pontiac (YTB-756)
Oshkosh (YTB-757)
Paducah (YTB-758)
Bogalusa (YTB-759)