U.S. Navy Design Project Numbers, 1965-1979

Line SCB First FY Hull type New / Conv 09010 Directive Initial approval Ships funded: Qty (FY) Remarks
343







344






001-099 cruisers
345 001 66 CL C


CL conversion to a Fleet Flagship. Also many designs for new construction fleet flagships.
346 002 66 CG C 247 22.3.65 2 ships (FY 66-67) AAW Modernization, Guided Missile Cruiser, CG (Talos/Tartar). CG 10 done, CG 11-12 not done
347 003 68 CAG C


CAG 1-2 AAW modernization. Dropped from FY68 due cost and ships reverted to CA.
348 Unk Unk CGN C 279 27.10.68
Conversion of USS Long Beach (CGN-9). Not FY69 or FY70. May have been for a major overhaul in 1970 with few changes.
349







350






100 carriers
351 100 68 CVS N


CVS replacement designed in 9/63, followed in 4/64 by a 100.71 and more designs in 1967.
352 101 66 CVA C 227 15.6.64 1 (66) Attack Aircraft Carrier Midway (CVA 41), second modernization
353 102 67 CVAN N 265 24.1.66 3 (67-74) Attack Aircraft Carrier CVA(N) 68-70. Start of Nimitz class (CVAN 68-70)
354 103 68 CVA C


Attack Aircraft Carrier CVA 42, second modernization, cancelled in favor of an austere overhaul.
355







356






200 destroyers
357 200 65 DE N 205 24.9.63 36 + 10 canc (65-68) Ocean Escort (DE). DE 1062-1107 (DE 1052 class). Construction of 46 Knox class ocean escorts (DE). 1098-1107 (FY68) were later cancelled including 1101, gas turbine. Directive 252 of 18.5.65 was for the FY66 ships (Pr. 200.66). Continuation of SCB 199C.
358 222 66 DD C 251 22.4.65 7 (67-68) DD 931/945 class ASW modernization. Continuation of SCB 251. Six in FY66 canc 8/66. DD 941 in FY68 canc after ord.
361 225 70 DD N 311 (5.5.75) 30 (70-75), 1 (78) DD 963-992 and 997, Project No. 225.71 (also reported as 224.71). Started as DX, which was the DXG reduced to a DE 1052 standard of weapons. (OASD in 10/66 proposed instead a repeat DE 1052: Friedman p373). Became Spruance class. Contract for 30 to Litton 6/70 under the total package procurement concept but this concept was abandoned in 1971 and a SCB number was assigned [224.71 in SAC75, Friedman, and SLM]. FY70 to 75 less 73. The directive is probably dated for the last batch of ships.
362 226 77 DDG N 314 28.9.76 1 (78) DDG-47 (TLR). 1st ship of Ticonderoga class (DDG 47 requested FY77)
363 233 67 DDG N 266 24.1.66 4 (77) Guided Missile Destroyer (DDG), Project No. 233.67 (also reported as 223.67). Started as DXG. Directive is for SCB Project No. 233.67. There were 2 DDG in the Navy proposal for FY67 by 2/66, the House wanted nuclear and took the two DDG out when change from steam to gas turbine increased financial uncertainty. Four ships of this type were built for Iran and were acquired by the USN in FY77 as DDG 993-996.
364 240 65 DLGN N 204 9.8.63
Nuclear Powered Guided Missile Frigate, DLG(N), Typhon. Typhon DLGN for FY65, 10,000t, 1 long range and 1 medium range missile launcher, followed SCB 227 of 1963.
365 241 66 DLGN N 237 16.11.64 2 (67-68) Nuclear Powered Guided Missile Frigate, DLGN 36-37 (California class). Started as DXGN.
366 243 66 DDG C 246 22.3.65 10 (66-74) AAW Modernization Guided Missile Frigate DLG 6 Class/DDG 37-46. Coontz class. Directive 262 of 29.11.65 was for the FY67 ships (Pr. 243.67).
367 244 66 DLG C 245 22.3.65 9 (66-71) AAW Modernization Guided Missile Frigate, DLG 16-24. Leahy class. Directive 256 of 26.7.65 was for the FY67 ships (Pr. 244.67).
368 189 74 DLGN C 292 1.3.72 1 (74) AAW Modernization Nuclear Powered Guided Missile Frigate DLGN 25 (previously 245.73)
369 246 70 CGN N 302 19.10.73 4 (70/75) Nuclear Powered Guided Missile Frigate (DLGN/CGN) 38-41. Virginia class. Full funding of CGN 42 requested FY76.
370 260 74 SCS
294 10.10.72
Sea Control Ship (SCS). The FY74 budget included funds for detail design and for advanced procurement of long leadtime components. The schedule permitted careful evaluation of the concept and design before a contract was let for the lead ship. The general concept, configuration and air group composition of the SCS was to be evaluated in the interim SCS, the amphibious assault ship USS GUAM.
371 261 73 FFG N 295 24.10.72 37 (73-79) Patrol Frigate (PF). PF 109, later FFG 7 class (7-61)
372 262 78 LSES
312 28.5.76
Large Surface Effect Ship (LSES) (TLR, Promulgation of). Followed contracts to four firms (Bell, Aerojet, Litton, and Lockheed) on 10 November 1972 to develop 2200-ton prototype preliminary designs; these were to be completed by August 1973 with detailed design work to be funded in FY74
373







374






300 submarines
375 300 65 SSN N 210 29.11.63 21 (65-69) Submarine, Attack Type (SSN 665/687). More Sturgeon class (Guitarro etc). Directive 244 of 19.3.65 was for the FY66 ships (Pr. 300.66) and Directive 272 of 1.2.67 was for the FY67 ships (Pr. 300.67). Continuation of SCB 188A
375.5 301 65 NR N ltr 27.12.65 1 (65) Nuclear Powered Research and Ocean Engineering Vehicle (NR 1)
376 302 68 SSN N 276 31.7.67 1 (68) Submarine, Attack Type (SSN 685). Lipscomb (electric drive)
377 303 70 SSN N 280 29.11.68 33 (70-79) Submarine, Attack Type (SSN 688-720). Start of Los Angeles class
378 304 74 SSBN N 296 5.1.73 7 (74-78) Trident submarine. Start of Trident [Ohio] class, (726-732)
379 350 65 LPSS C 217 20.3.64 1 (65) Conversion of SSG 574 guided missile submarine to Troop Transport Submarine (APSS). Later LPSS (ship never officially APSS). [Growler not done.]
380 351 66 SSN C


SSGN 587 converted to Experimental Nuclear Powered Submarine (SSN). Reclassified 15.8.65.
381 353 68 SSBN C 277 30.10.67 16 (68-73) Fleet Ballistic Missile Submarine (SSBN) POSEIDON conversion. SSBN 627/657. Directive 283 of 25.4.69 was for the FY71 ships (Pr. 353.71)
382 355 73 SSBN C 289 27.10.71 11 (73-75) Fleet Ballistic Missile Submarine (SSBN) POSEIDON conversion. SSBN 616-626, 658-59
383







384






400 amphibious
385 400 65 AGC
211 24.1.64 2 (65-66) Amphibious Force Flagship (AGC). AGC 19-20. Continuation of SCB 248. Directive 235 of 18.9.64 was for the FY66 ships (Pr. 400.66).
386 401 65 LPH
200 31.5.63 2 (65-66) Amphibious Assault Ship (LPH). LPH 11-12. Directive 255 of 30.6.65 was for the FY66 ship (LPH 12, Pr. 401.66).
387 402 65 LPD
220 17.4.64 2 (65) Amphibious Transport Dock (LPD). LPD 14-15, continuations of SCB 187C but non-flag. 16 in FY67 canc. Directive 250 of 6.4.65 was for the FY66 ships (Pr. 402.66)
388 403 65 AKA
223 5.5.64 5 (65-66) Attack Cargo Ship (AKA). AKA 113-117. Directive 234 of 17.9.64 was for the FY66 ship (AKA 117, Pr. 403.66)
389 404 65 LSD
221 20.4.64 5 (65-67) Dock Landing Ship (LSD). LSD 36-40. Directive 228 of 29.7.64 was for the FY66 ships (LSD 37-39, Pr. 404.66)
390 405 65 LST
230 25.8.64 20 (65-67) Tank Landing Ship (LST). LST 1179-1198. Continuation of SCB 247. Directive 261 of 19.3.65 was for the FY66 ships (LST 1180-1187, Pr. 405.66) and Directive 261A of 6.10.67 was for the FY67 ships (LST 1188-1198, Pr. 405.67)
391 406 65 LCU
226 11.6.64 40 (65-69) Landing Craft Utility (LCU). LCU 1625-1666. Continuation of SCB 149B. Number 406 first used FY66. Directive 264 of 10.1.66 was for the FY66 ships (1627-30, Pr. 406.66, deliv. 1967). LCU 1631-36 completed 1968, LCU 1637 aluminum prototype, 1638-45 completed 1969/70, 1646-1666 completed 1970/71.
392 407 67 LFS



LFS (Landing Ship Fire Support). There were two 20-knot design variants that could have been selected for FY67, one of 2,900 tons with two 175mm guns and one of 3,840 tons with three, but McNamara's introduction of Concept Formulation/Contract Definition procedures stalled the LFS program.
393 408 68 LCM(8)
267 4.4.66 97 (66-68) Landing Craft Mechanized, LCM(8). Continuation of SCB 95. Number 408 first used FY68. 40 Mod 1 steel boats ord for Army FY66 and 61 more FY70. Further steel variants were Mods 3 and 5.
394 409 68 LWT
274 25.3.67 6 (68-69) Side-loaded warping tug (LWT). Causeway tenders. Number 409 first used FY68.
395 410 68 LHA
298 21.4.73 5 (69-71) Amphibious Assault Ship (General Purpose) (LHA). Contract reduced from 9 to 5 ships FY72.
396 411 68 LCM(6)


277 (65-69) LCM(6). Continuation of SCB 94. Number 411 first used FY68.
397 412 69 LCM(8)



LCM(8). When the AKA 113 class was given sufficient boom capacity a new lightweight aluminum LCM(8) Mod 2 was developed. 20 aluminum boats [for Navy] ord FY66, 43 with a stern wedge in FY67, and 26 Mod 2 ord FY68. Mod 4 was a further aluminum version for AKA deck stowage. [Friedman 295]
398 413 70 LCPL


145 (65/70) LCPL (Landing Craft Personnel Large). Continuation of SCB 128A. Number 413 not used until after FY68.
399 414 Unk LCM(6)
306 19.6.74
LCM(6). FY78 had 50 Mod 3, probably the HPI (Hull Product Improvement) version.
399.5 499 Unk LCVP


403 (65-68) LCVP (Landing Craft Vehicle Personnel). Continuation of SCB 96.
400 None 81 LSD
317 26.9.79 8 (81-86) LSD 41 (TLR, Promulgation of)
401







402






500 mine warfare
403 500 66 MSS C 131B 25.8.64 1 (66) MSS (Minesweeper, special) conversion. Continuation of SCB 195. Conversion started 30.8.66.
404 501 66 MSO N 225 5.5.64
Ocean minesweeper & minehunter (MSO). Combined MSO and MSC/MHC. MSO 523-6 in FY66 auth 12.65, 527-31 in FY67 auth 2.67, MSO 532-38 in FY68 not auth. All postponed due design and contracting problems. Directive 258 of 16.8.65 was for the FY67 ships (Pr. 501.67).
405 502 68 MSO C 257 31.7.65 423/519 (68-69) Modernization of Ocean Minesweeper and Minehunter (MSO). MSO 423/519. Directive 257A of 27.5.70 was for the FY68, 69, 70, and 71 ships.
406 Unk Unk MSI
263 16.12.65
Inshore Minesweeper (MSI). No info.
407







408






600 patrol
409 600 65 PGM
206 17.10.63 88/101 (65-66) Motor gunboat, (PGM). PGM 88-90, PG 92-101, all reclas to PG 1 Apr 67. Continuation of SCB 229. Directive 242 of 2.3.65 was for the FY66 ships (Pr. 600.66).
410 601 66 PGH ` 259 30.8.65 1-2 (66) Hydrofoil Gunboat (PGH). Continuation of SCB 252. PGH 1-2, Flagstaff/Tucumcari (FY66). (Not 601.65)
411 602 73 PHM
293 2.10.72 1-6 (73-76) U.S. version of the NATO patrol hydrofoil, guided missile (PHM 1-6). 2 prototypes funded FY73 (only 1 to completion), 4 production in FY75, 2 requeted FY76.
412







413






700 auxiliary/tender
414 700 65 AD
207 24.10.63 38-44 (65-79) Destroyer Tender (AD). AD 38 Gompers class. Continuation of SCB 244. Directive 248 of 1.4.65 was for the FY66 ship (AD 39, Pr. 700.66), Directive 248A of 28.11.68 was for a FY69 ship (Pr. 700.69, AD 40, canc.), Directive 248B of 25.10.72 was for a FY73 ship (Pr. 700.73, AD40, canc. again), and Directive 301 of 26.9.73 was for AD 41-44 (Pr. 700.75 etc.)
415 701 65 AVB



AVB 3 (Advanced Aviation Base Ship) converted from LST. Continuation of SCB 177. Not done.
416 702 65 AS
215 12.3.64 36-38 (65-66, 69) Submarine Tender (AS), new construction. AS 36-37. To use same hull and machinery and have same nuclear facilities as AS 33. Directive 243 of 8.3.65 was for the FY66 ship (Pr. 702.66), Directive 281 of 28.12.68 was for the FY69 ship (AS 38, canc., Pr. 702.69).
417 703 65 AE
216 3.12.64 26/35 (65-68) Ammunition ship (AE). AE 26 Kilauea class. Continuation of SCB 249. Directive 239 of 18.12.64 was for the FY66 ships (AE 28-29, Pr. 703.66)
418 704 67 AGB



New icebreaker (AGB), cancelled. Continuation of SCB 11A of FY52.
419 705 65 AFS
208 22.10.63 4-7 (65-67) Combat Store Ship (AFS). AFS 4, Mars class. Continuation of SCB 208. Directive 241 of 12.2.65 was for the FY66 ship (AFS 6, Pr. 705.66)
420 706 65 AO
214 27.2.64 51, 98-99 (65) Oiler (AO JUMBO) conversion. Jumboization of Cimarron class (AO 51, 98, 99)
421 707 65 AOR
229 12.8.64 1-6, 7 ( 65-72) Replenishment Oiler (AOR). AOR 1. Probably continuation of SCB 235. Directive 233 of 3.9.64 was for the FY66 ships (AOR 3-4, Pr. 707.66), Directive 291 of 24.2.72 was for the FY72 ship (AOR 7, 707.72).
422 708 65 AGS
147B 12.2.64 29 (65) Surveying Ship (AGS). Continuation of SCB 193 (Dir 147A for FY64) for AGS 29 (Chauvenet was SCB 708.65). Replaced by SCB 723.
423 709 65 AGS
197A 20.2.64 31 (65) AGS 31. Continuation of SCB 214 (Dir 197 for FY64).
424 710 65 AGOR
219 24.2.64 12-15 (65-66) Oceanographic Research Ship (T-AGOR). T-AGOR 12-15. Continuation of SCB 185[A] of FY63. Directive 249 of 2.4.65 was for the FY66 ships (AGOR 14-15, Pr. 710.66). The FY67 unit is Hayes
425 711 65 AOE
191A 26.11.63 3-5 (65-66, 68) Fast Combat Support Ship (AOE). Continuation of SCB 196 (Dir 191 for FY64) for AOE 3-4. AOE 5 of FY 68 canc. Directive 260 of 21.9.65 was for the FY66 ship (AOE 4, Pr. 711.66)
426 712 65 LSV (T-)
195A 5.12.63
Vehicle Cargo Ship (T-LSV). Continuation of SCB 236 (Dir 195 for FY64). 3 T-LSV were in the draft FY66 program in 11/64 in an effort to replace the aging T-AK fleet but the whole effort was sidelined by the FDL program.
427 713 65 AO (T-) C 213 27.2.64 166-167 (65-66, canc) T2 tanker (T-AO) Jumbo, limited conversion. Continuation of SCB 246. Directive 232 of 3.9.64 was for the ships in FY66 (Pr. 713.66)
428 714 65 AS (FBM) C 222 4.5.64 35 (65, canc) Submarine Tender, AS(FBM), new construction. AS 35, canc. Continuation of SCB 238. See 733 for Poseidon conversions.
429 715 65 AK C 224 7.5.64 281/282 (65/69) Cargo Ship FBM (T-AK-FBM). Cargo ships converted for FBM support, AK 281-282. Continuation of SCB 234. Directive 278 of 16.12.67 was for the FY69 ship (AK 282, Pr. 715.69, Poseidon vice Polaris)
430 716 66 ARSD



ARSD (salvage lifting ship) for CINCLANTFLT, not built, replaced by contract operation of Navy ARSD in non-self propelled mode
431 717 66 LSV C


Modification of one Ro-Ro T-LSV, FY66.
432 718 66 ARDM C 238 25.11.64 1 (66) Auxiliary Repair Dock Medium (ARDM). ARDM 3 (Endurance) converted from ARD 18, FY66 (a second dropped). Norfolk SB/DD. Continuation of SCB 237
433 719 66 ATS
240 28.12.64 1-3 (66-67), 4-6 (72-73) Salvage Tug (ATS). Edenton class, ATS 1-3. Two more ATS were in FY70, none funded in FY71, 3 ATS were in FY72. ATS 4-5[6?] canc. Directive 285 of 23.6.69 was for the FY71 ships (Pr. 719.71)
434 720 66 FDL



FDL (Fast Deployment Logistic Ships). A McNamara logistics program to complement the Air Force's C5 transport aircraft program. None built.
435 721 67 ASR
268 22.4.66 21-22 (67-68) Submarine Rescue Vessel (ASR). Pigeon class, ASR 21. Directive 275 of 26.5.67 was for the FY68 ship (Pr. 721.68)
436 722 65 DSSP
None 14.5.65
Deep Sea Submergence Support Ship (DSSP). Probably a support ship for the Deep Submergence Systems Project (DSSP).
437 723 65 AGS
147C 1.11.65 32 (66) Surveying Ship (T-AGS). Continuation of SCB 708.65 for AGS 29 and 32 as SCB 723.65 and 723.66. Directive 147 of 11.6.59 was for SCB 193, Dir 147A of 30.4.63 was the same for FY64, Dir 147B of 12.2.64 was for 708.65 and 708.66 (carried thus in the FY66 program pamphlet dated 15.6.65), and Dir 147C of 1.11.65 (possibly the British design) was for 723.65 and 723.66.
438 724 67 ATF
269 7.5.66
Fleet Ocean Tug (ATF). improved version of ATF 148, cancelled
439 725 67 AGS (T-)
270 29.11.66 To Pr.728 Medium Surveying Ship (T-AGS). AGS 33 Wilkes (changed to 728.67)
440 726 67 AGOR (T-)
273 15.3.67 16 (67) Oceanographic Research Ship (T-AGOR). The FY67 booklet, dated 15.6.66, described it as a medium size AGOR, the first of its class, with accommodations and work space for 30 oceanographic scientists. It later became the catamaran AGOR-16 Hayes.
441 727 68 AR



AR (Repair Ship). Cancelled, no details. In October 1961 the SCB noted that the AR was a variation of the AD and the usefulness of the AD makes the AR less urgent.
442 728 67 AGS (T-)
271 29.11.66 33-34 (67) Medium Surveying Ship (T-AGS). Called the 3rd and 4th ships of the medium AGS class of FY64 in the FY67 budget pamphlet (Wilkes and Wyman). Wilkes was originally the 725.67 variant, see above.
443 729 68 AORL



AORL (Light Replenishment Oiler). A 310-foot x 50-foot, 5000t full load, 15-kt tanker with two replenishment stations each serving both sides. Not built.
444 730 68 AGER C


AGER (Environmental Research ships) AGER 1-3, FY68. Banner, Pueblo, Palm Beach.
445 731 69 AGM (T-) C 284 25.4.69 22 (69) Operational test instrumentation ship (T-AGM-FBM). AGM 22 conversion from APA.
446 732 68 AGOR N

19-20 (68) T-AGOR 19-20 (Oceanographic Research Ships). They were Project 710.68 in the FY68 program pamphlet, making them similar to AGOR12 or AGOR 14. Not built.
447 733 68 AS C 282 12.2.69 33-34 (68-69) Submarine Tender (AS) Poseidon conversion. AS 33/34 (FY 69/68)
448 734 71 AGOR N 286 20.4.70 21-22 (71) Oceanographic Research Ship (AGOR, UTILITY). Gyre class, AGOR 21-22
449 735 72 AGS C 287 11.5.71
Deep Ocean Survey Ship (T-AGS-DO). Convert AGM 11 to T-AGS(DO ) 37, not done.
450 736 73 AS C 288 18.10.71 31-32 (73-75) Submarine Tender (AS) POSEIDON conversion. AS 31-32
451 737 72 AS N 290 3.12.71 39-41 (72-77) Submarine Tender (AS). AS 39-40, probably AS 41. Directive 313 of 11.8.76 was probably for AS 41.
452 738 73 ARDM N


New medium auxiliary dry dock. Probably Shippingport (ARDM 4, new construction). See 742.75. In sources as ASPM and ASBM (expansions unknown if accurate).
453 739 75 AO N 304 14.11.73 177/186 (76-78) The FY 1975 fleet oiler (AO), AO 177 class. Dir 304B of 17.3.87 is AO 177 (Jumbo). [There was one AO in FY72.]
454 740 75 ATF N 303 14.11.73 To Pr.744 The FY 1975 fleet tug (ATF). To 744.75
455 741 75 ARC N


New cable ship (ARC). (see 746.79)
456 742 75 ARDM C 297 2.4.73 4 (75) Medium Auxiliary Floating Drydock (ARDM). Convert ARDM (Auxiliary Repair Dry Dock - Medium) from ARD. May be later version of Shippingport (738.73)
457 743 75 ASV C


ASV (Autonomous Surface Vehicle?) converted to support deep-submergence vehicle
458 744 75 ATF (T-)
305 28.12.73 166-172 (75, 78) FY 1975 Fleet Tug (ATF) for operation by MSC. From 740.75. 5 requested by SecDef in FY78
459 745 78 AGOS (T-)
315 15.11.76 1-3 (80) etc. Auxiliary Ocean Surveillance Ship (T-AGOS) (TLR)
460 746 79 ARC (T-)
316 12.10.78 7 (79) T-ARC (cable ship) (TLR)
461 None 81 ARS
318 8.1.80 50-53 (81-83) ARS-46 (salvage ship), then ARS 50 (Dir 318A of 19.1.81) (TLR)
462







463






800 service craft
464 800 65 YP
236 6.11.64 666-672 (65-69, 78) Patrol Craft (YP). Continuation of SCB 139A, YP 654 class. YP 666-67 (FY65) YP 668 (FY66), 669-672 (FY69), 666-672 all YP 654 type, 673-75 (in service 79, new type)
465 801 66 YRBM
253 22.6.65 23-30 (66, 69) Originally YRBM(L) (Repair, Berthing, and Messing Barge (Large), the fifth letter was quickly dropped. YRBM(L) 23-26 (FY69), 27-30 (FY70). All YRBM 23 type, 3 decks. See 810.73.
466 802 66 YRBM
254 22.6.65 21-22 (68) YRBM (Repair, Berthing, and Messing Barge). Continuation of SCB 61J. 2 decks. May have covered YRBM 21-22 (FY68), possible YFNB conversions ca. 1967 for use in Vietnam. 261' x 48'.
467 803 65 AHLC



AHLC (Heavy Lift Craft), proposed 9/65 with initial two craft programmed for FY67, these deferred 12/65, leases from the UK and the purchase of the German YHLC 1-2 in 9/67 filled the requirement.
468 804 65 YC


1469-1504 (67-69) YC (open lighter). Continuation of SCB 61E. 1461-1468 (ex YFN 1226-1233, in service 1965, type 1461), YC 1469-78 (FY66, 1469 type), 1480-99 (FY67, 1469 type), 1500-04 (FY68. 1500 type, ex YFN 1244-8), 1517-22 (In service 77-78, 1517 type), 1523-27 (auth 8/78).
468.5 804 65 YFN


(67-69) YFN (Covered Lighter) Continuation of SCB 61C. 1239-43 (FY68, new type), 1249-53 (FY69, 1239 type). YFN 1244-48 became YC 1500-4).
469 805 65 YTB


786-810 (65-69) YTB (Large Harbor Tug). Continuation of SCB 147A. 782-89 (FY65), 790-93 (FY66), 794-98 (FY67), 799-802 (FY68), 803-810 (FY69), 811-15 (FY70), 816-27 (FY71), 828-32 (FY72), 833-36 (FY74) (All of YTB 760 type).
470 806 70 YTM



YTM (Medium Harbor Tug). No candidates. All YTM in NVR 1976 except two Army LT were ex-YTB.
472 807 73 YTB
307 12.7.74
YTB (Large Harbor Tug). Directive applicable to FY75 (if any) and later, none built
473 808 73 YTM
309 12.7.74
YTM Cycloidal (Harbor tug, medium-cycloidal). Continuation of SCB 61R, design studies but none built
474 809 73 YON
308 12.7.74 67, 69, 73 YON (Multipurpose Oil Barge, Non-self propelled). 271-275 (FY67), YON 280-83 (built 1972-73), 284-289 (FY72), 291-295 (FY73), 296-300 (FY74, 297-300 not in NVR 1981). All YON 245 type. Directive applicable to FY74 and later.
475 810 73 YRBM `


YRBM (Repair, Berthing, and Messing Barge). Probably YRBM 31-36 (bldg 3/79, new type, 3 decks, looks like the 23 type), 37-46 auth (10/80, YRBM 31 type)
476







477






900 special purpose craft
478 900 65 AGSL



AGSL (Satellite Launching Ship). Continuation of SCB 218, FY65. Not built. Classification on the list 25.8.60 and removed 23.8.68.
479 901 67 AGHS



AGHS (expansion unknown, although in 1961 an AGH was a hydrofoil ship for special operations). Plainview, AGEH 1, fitted with a variety of ECM gear including a big lattice mast aft with jammers, FY67, cancelled. The AGHS designator reappeared in FY78 as a Patrol Combatant Support Ship (superseding the AGP) when SecDef asked for LST 1178 (Wood Cty.) to be converted to support the forward-deployed PHMs. That conversion was cancelled in 1977.
480 902 67 DRV



DRV, FY67, canc. (expansion unknown)
481 903 67 BMS



BMS, FY67 or FY71, canc. (expansion unknown)
482 903 Unk SWOB
299 29.5.73
Ships Waste Offloading Barge (SWOB), 75,000 gallon
483 904 Unk SWOB



Ships Waste Offloading Barge, 7,500 gallon, 42 craft
484 905 Unk SWOB
310 7.2.75
Ships Waste Offloading Barge, 400,000 gallon. SAIP Project No. 905.xx.