Unclassified miscellaneous vessel

The IX (unclassified–miscellaneous) hull classification symbol is used for ships of the United States Navy that do not fit into one of the standard categories. While most of the vessels in this category were unnamed barges and floating shipyard equipment, it also includes retired battleships, training equipment and simulators, war prizes, and experimental vessels.

Vessels

 * Annapolis (IX-1) — gunboat
 * Dispatch (IX-2) (ex-Boston) — protected cruiser
 * Briarcliff (IX-3)
 * USS Cheyenne (IX-4) (ex-Wyoming)
 * Alton (IX-5) (ex-Chicago) — protected cruiser
 * Coastal Battleship Number 4 (IX-6) (ex-Iowa)
 * Commodore (IX-7)
 * Cumberland (IX-8)
 * Dubuque (IX-9)
 * Essex (IX-10)
 * Gopher (IX-11) (ex-Fern)
 * Hancock (IX-12)
 * Hartford (IX-13)
 * Hawk (IX-14)
 * Prairie State (IX-15) (ex-Illinois)
 * USS Tallahassee (IX-16)
 * Monadnock (IX-17)
 * Nantucket (IX-18)
 * Newport (IX-19)
 * Constellation (IX-20)
 * Constitution (IX-21)
 * Oregon (IX-22)
 * Paducah (IX-23)
 * Philadelphia (IX-24)
 * Reina Mercedes (IX-25)
 * Southery (IX-26)
 * Sturgeon Bay (IX-27)
 * Wheeling (IX-28)
 * Wilmette (IX-29)
 * USS Dover (IX-30)
 * USS Wolverine (IX-31) (ex-Michigan)
 * Yantic (IX-32)
 * Newton (IX-33)
 * Henry County (IX-34)
 * Topeka (IX-35)
 * Light Target Number 2 (IX-36) (ex-Boggs)
 * Light Target Number 3 (IX-37) (ex-Sinclair)
 * Empire State (IX-38) (ex-Procyon)
 * Seattle (IX-39) (ex-Washington)
 * Olympia (IX-40)
 * America (IX-41)
 * Camden (IX-42)
 * Freedom (IX-43)
 * Damage Control Hulk Number 1 (IX-44) (ex-Walker)
 * Favorite (IX-45)
 * Transfer (IX-46)
 * Vamarie (IX-47)
 * Highland Light (IX-48)
 * Spindrift (IX-49)
 * Bowdoin (IX-50)
 * Sea Otter I (IX-51)
 * Cheng Ho (IX-52)
 * Sea Otter II (IX-53)
 * Galaxy (IX-54)
 * Black Douglas (IX-55)
 * USS Navajo (IX-56)
 * Araner (IX-57)
 * Dwyn Wen (IX-58)
 * Volador (IX-59)
 * Seaward (IX-60)
 * Geoanna (IX-61)
 * Vileehi (IX-62)
 * Zahma (IX-63)
 * Wolverine (IX-64)
 * Blue Dolphin (IX-65)
 * Migrant (IX-66)
 * Guinevere (IX-67) (note duplicated number)
 * Burleson (IX-67) (note duplicated number)
 * Seven Seas (IX-68)
 * Puritan (IX-69)
 * Gloria Dalton (IX-70)
 * Kailua (IX-71)
 * Liberty Belle (IX-72)
 * Zaca (IX-73)
 * Metha Nelson (IX-74)
 * John M. Howard (IX-75)
 * Ramona (IX-76)
 * Juniata (IX-77)
 * Brave (IX-78)
 * El Cano (IX-79)
 * Christiana (IX-80)
 * Sable (IX-81)
 * Luster (IX-82)
 * Ashley (IX-83)
 * Congaree (IX-84)
 * Euhaw (IX-85)
 * Pocotaligo (IX-86)
 * Saluda (IX-87)
 * Wimbee (IX-88)
 * Romain (IX-89)
 * Forbes (IX-90)
 * Palomas (IX-91)
 * Liston (IX-92)
 * Irene Forsyte (IX-93)
 * Ronaki (IX-94)
 * Echo (IX-95)
 * Richard Peck (IX-96)
 * Martha's Vineyard (IX-97)
 * Moosehead (IX-98) (ex-Turner)
 * Sea Cloud (IX-99)
 * Racer (IX-100)
 * Big Chief (IX-101)
 * Majaba (IX-102)
 * E.A. Poe (IX-103)
 * Peter H. Burnett (IX-104)
 * Panther (IX-105)
 * Greyhound (IX-106) (ex-Yale)
 * Zebra (IX-107)
 * Atlantida (IX-108)
 * Antelope (IX-109)
 * Ocelot (IX-110)
 * Armadillo (IX-111)
 * Beagle (IX-112)
 * Camel (IX-113)
 * Caribou (IX-114)
 * Elk (IX-115)
 * Gazelle (IX-116)
 * Gemsbok (IX-117)
 * Giraffe (IX-118)
 * Ibex (IX-119)
 * Jaguar (IX-120)
 * Kangaroo (IX-121)
 * Leopard (IX-122)
 * Mink (IX-123)
 * Moose (IX-124)
 * Panda (IX-125)
 * Porcupine (IX-126)
 * Raccoon (IX-127)
 * Stag (IX-128)
 * Whitewood (IX-129) (note duplicate numbers)
 * Whippet (IX-129) (note duplicate numbers)
 * Wildcat (IX-130)
 * Abarenda (IX-131)
 * Andrew Doria (IX-132)
 * Antona (IX-133)
 * Arayat (IX-134)
 * Arethusa (IX-135)
 * Carondelet (IX-136)
 * Celtic (IX-137)
 * Malvern (IX-138)
 * Octorara (IX-139)
 * Quiros (IX-140)
 * Manileno (IX-141)
 * Signal (IX-142) (ex-Standard Arrow)
 * Silver Cloud (IX-143) (ex-Alameda)
 * Clyde (IX-144)
 * Villalobos (IX-145)
 * Fortune (IX-146)
 * Supply (IX-147)
 * North Star (IX-148)
 * Trefoil (IX-149)
 * Quartz (IX-150)
 * Silica (IX-151)
 * Carmita (IX-152) (ex-Slate)
 * Asphalt (IX-153)
 * Bauxite (IX-154)
 * Mustang (IX-155)
 * City of Dalhart (IX-156)
 * Orvetta (IX-157)
 * Limestone (IX-158)
 * Feldspar (IX-159)
 * Marl (IX-160)
 * Barite (IX-161)
 * Lignite (IX-162)
 * Cinnabar (IX-163)
 * Corundum (IX-164)
 * Flicker (IX-165)
 * Linnet (IX-166)
 * Leyden (IX-167)
 * Southland (IX-168)
 * President Warfield (IX-169)
 * Curlew (IX-170)
 * Albatross (IX-171)
 * Bluebird (IX-172)
 * Etamin (IX-173)
 * Grumium (IX-174)
 * Kestrel (IX-175)
 * Kingbird (IX-176)
 * Nightingale (IX-177)
 * Banshee (IX-178)
 * Kenwood (IX-179)
 * Flamingo (IX-180)
 * Egret (IX-181)
 * Donnell (IX-182)
 * Catbird (IX-183)
 * Clifton (IX-184)
 * Stonewall (IX-185)
 * Dawn (IX-186)
 * Belusan (IX-187)
 * Chotauk (IX-188)
 * Marmora (IX-189)
 * Nausett (IX-190)
 * Vandalia (IX-191)
 * Flambeau (IX-192)
 * Meredosia (IX-193)
 * Killdeer (IX-194)
 * Goshawk (IX-195)
 * Spark (IX-196)
 * Mariveles (IX-197)
 * Cohasset (IX-198)
 * Barcleo (IX-199)
 * Maratanza (IX-200)
 * Sterling (IX-201)
 * Liberator (IX-202)
 * Agile (IX-203)
 * Allioth (IX-204)
 * Callao (IX-205) (ex-Externsteine)
 * Chocura (IX-206)
 * Big Horn (IX-207)
 * Domino (IX-208)
 * Seaward (IX-209)
 * Sea Foam (IX-210)
 * Castine (IX-211)
 * IX-212 (no name, ex-LCI(G)-396)
 * Serapis (IX-213)
 * Yucca (IX-214)
 * Don Marquis (IX-215)
 * Unicoi (IX-216)
 * Tackle (IX-217)
 * Guardoqui (IX-218)
 * Eureka (IX-221)
 * Pegasus (IX-222)
 * Triana (IX-223)
 * Aide de Camp (IX-224)
 * Harcourt (IX-225)
 * Araner (IX-226)
 * Gamage (IX-227)
 * Justin (IX-228)
 * Inca (IX-229)
 * Tapacola (IX-230)
 * Stalwart (IX-231)
 * Summit (IX-232)
 * USS Canandaigua (IX-233)
 * USS Eastwind (IX-234)
 * USS Royone (IX-235)
 * IX-236 through IX-299 unused
 * Prinz Eugen (IX-300)
 * Conecuh (IX-301)
 * Atlanta (IX-304)
 * Prowess (IX-305)
 * IX-306 (no name)
 * Brier (IX-307)
 * New Bedford (IX-308)
 * Monob One (IX-309)
 * IX-310 (no name)
 * Benawah (IX-311)
 * ex-Horst Wessel (IX-327)
 * IX-328 through IX-500 unused
 * Elk River (IX-501)
 * Mercer (IX-502)
 * Nueces (IX-503)
 * USS Echols (IX-504)
 * IX-505 (no name)
 * IX-506 (no name)
 * USS General Hugh J. Gaffey (IX-507) (ex-USS Admiral W. L. Capps (AP-121))
 * USS Orca (IX-508)
 * Underwater Explosives Barge Number 1 (IX-509)
 * IX-510 (no name, ex-USS Admiral W. S. Sims (AP-127), ex-USNS General William O. Darby (T-AP-127))
 * IX-511 (no name) former Landing Ship Tank
 * IX-512 (no name)
 * IX-513 EMPRESS II Electromagnetic Pulse Environment Simulator for Ships
 * ex-Bay Lander (IX-514)
 * IX-515 (no name) (ex-Dorado)
 * IX-516 (no name)
 * Gosport (IX-517) (ex-Pacific Escort, ex-Thomas G. Thompson)
 * ex-Proteus (IX-518)
 * IX-519 (no name)
 * IX-520 (no name)
 * ex-Artisan section 1D (IX-521)
 * IX-522 (no name)
 * IX-523 (no name)
 * IX-524 (no name)
 * ex-Artisan section 1C (IX-525)
 * IX-526 (no name)
 * IX-527 (no name)
 * IX-528 (no name)
 * Sea Shadow (IX-529)
 * IX-530 (no name)
 * IX-531 (no name)
 * Joint Venture (IX-532)
 * IX-533 (no name)
 * IX-534 (no name, section B)
 * IX-535 (no name, section H)
 * IX-536 (no name)
 * USNS Prevail (IX-537)
 * IX-538 (no name)
 * Neodesha (IX-540)
 * White Bush (IX-542)
 * IX-545 (no name ex-USS Waxahachie (YTB-814))