U.S. Navy Ship Characteristics Board (SCB) Numbers, 1946-1964

Line SCB First FY Hull type New / Conv SCB 09010 Directive Initial approval Ships funded: Qty (FY) Remarks
2







3 1 48 DL (CLK) N ltr 5.3.47 1 ship (FY 48) "Submarine Killer Ship" (BUSHIPS (Cochrane) ltr 6/46, FY48) (Norfolk). Originally hoped to be DE size as SCB 7, then DD. Two requested FY48 to work together. Auth FY48, awarded FY49.
4 2 47 SS N ltr 5.3.46 6 (48-49) SS 563-68 (Tang class). Two approved by SECNAV 5.3.46 as part of an experimental program and auth FY47. Four submarines (including these two) of two types (one for EB and one for Portsm.) recommended for FY48 by BUSHIPS 6/46. 563-4 [and the others?] awarded FY48. [ltr est.]
5 2A 53 SS N 46 24.2.53
Attack submarine (Project 2A). A redesigned Tang for FY53 (273' oa x 30', 1,800t std, 2,600t subm, these data from Directive 46 of 24.2.53, boat is larger in Friedman p.29). Rejected as too large and too complex for a SS. Succeeded by Darter (SCB 116) and then Grayback (SCB 124).
6 3 48 SS N


Closed cycle submarine engine. In drafts of FY48 with SSN, advanced propulsion dropped due funding and SCB 2 built instead. [see also SCB 67]
7 4
CVB N


1945 fleet carrier prototype. Merged with SCB 6 by 6/46, although this was a distinct design through 1945.
8 5 48 DL (DD) N ltr 30.7.47 4 (48) Two destroyers of new design to escort fast carrier task forces and provide AA and AS defenses. Two recommended by BUSHIPS 6/46. 4 auth FY48, awarded FY49. (Mitscher class)
9 6
CVB N


Strategic attack carrier, flush deck. Preliminary char from work on a new fleet carrier 1945-6 discussed 19 Jun 46, soon merged with "general purpose" SCB 6A.
10 6A 49 CVB N


Aircraft Carrier, Large (CVB 58) United States, combined SCB 4 and 6 by 6/46. 1st draft char. 13 Feb 47. Was CVA (Aircraft Carrier, Heavy) by 1949.
11 7 48 DDE C ltr 30.1.48 18 (48-50) Originally new 30-knot DE (escort destroyers). Two DE's recommended for FY48 by BUSHIPS 6/46 if one type sufficed, 4 if two types were required. Program in 8/46 called for nine. As of 1/47 this project was deferred pending design studies on the completion of four 2200-ton DD hulls as DDE and DDK, although these could not serve as prototypes for the 2100-ton conversions. SCB 7 became ASW conversion of Fletcher class. DDE 445 was the interim form of this ship. Conversion of 145 was planned, 18 done.
12 7A
DDE C


Austere Fletcher class DD conversion in which 3 or 4 5" guns were to be retained.
13 8
CVE N


Fast CVE, basically a simplified CVL capable of rapid mass construction. Not recommended by BUSHIPS as CVL only slightly exceeded requirements. Discontinued by 1/47, CVL 48-49 to include the necessary features. See SCB 43.
14 9 48 LST N


New 15-knot LST (original LST 1156) able to handle new Army 95-ton tank [gun carriage] and 100-ton trailer. BUSHIPS recommended continuing the present steam turbine LST, altered for the new tank, and awaiting operational experience with it. The char. were 13 knots, diesel. Two in FY48 as of 7/46 but not funded. No design work done, focused on more difficult 20-kt project (SCB 32, active 8/47-late/48). Resumed for Korean War with 1st sketch design 10/50, got too large, restarted by CNO 9.1.51 as SCB 9A, a diesel version of LST 1153.
15 9A 52 LST N 49 12.4.51 15 (52) New, improved LST. SCB 9 restarted by CNO 9.1.51 as diesel version of LST 1153 with 3"/50 armament, a turntable at the forward end of the tank deck for LVTs, and berthing for 383 embarked troops to man the vehicles. The new design was designated SCB 9A. Built in FY52 as 1156-70 with 1st 2 ordered 2 months before the others. Directive 49 replaced a 1951 letter directive on 7.8.53.
16 10 48 AKA C

1 (48) Conversion of AKA (Arneb, AKA 56) to Arctic Supply and Station Ship. Requested 2 for conversion, 1 for each ocean. Two WIND class conversions were requested in FY48 but the AGB was later found not large enough for use as a supply ship.
17 11 48 AGB C


Arctic Picket Ship. Initially a large anti-aircraft cruiser with considerable excess capacity for the support of Arctic operations. As such tentatively designated as CLI, Cruiser Ice-breaker. It was pointed out that an AG 88 (AGB 1) type icebreaker could be modified to carry out the picket duty of SCB 11, but the General Board recommended an older CA (Astoria class) with strong ASW and AA batteries. Two WIND class conversions were requested FY48. DD and DE were deemed unsuitable for operations in ice.
18 11A 52 AGB N 20 21.9.51 1 (52) New icebreaker (AGB), SCB 11A. SCB 11 became SCB 11A (a pure icebreaker with picket feature of SCB 11 deleted). Continued as 704.YR
19 12 48 SSR C

2 (48-49) Conversion of submarine to Arctic radar picket (SSR): SSR 419 (FY48) and SSR 312 (FY49). They were preceded by the undesignated SS 481 & 489 conversions (completed 1946)
20 12A 51 SSR C 1 30.1.51 4 (52) Radar Picket Submarine (SSR) conversion. SCB 12A was not Arctic-specific but supported carriers. 6 converted.
21 13 49 CLC C ltr 29.1.47
"Expeditionary Force Flagship" or "Task Fleet Command Ship" Northampton (BUSHIPS 6/46, FY49). Designation CLC (Light Cruiser, Command) recommended 6/46, CA 125 reclassified 1 Nov 47.
22 14 48 APA C


New 20 knot APA. Objective was to develop a single type hull and engineering plant easily adaptable to rapid conversion to a high speed APA or AKA in time of war and suitable for building in merchant ship yards. Another objective was to attempt to secure development of a basic type in the Merchant Marine for emergency conversion. Procurement recommended to be omitted from FY48 (BUSHIPS 6.46)
23 14B 51 APA C 38 17.10.50
Troop transport (AP) conversion from MA hull (P2-S1-DN1). 14B: To transport troops (USS). AP 196-198. See SCB 14D (same directive). Directive 38 replaced a 1950 letter directive on 1.12.52.
23 14C 52 APA C 45 30.4.51
Troop Transport (AP) conversion from MA hull P3-S2-DL2 (Independence/Constitution). To provide high-speed point-to-point transportation of troops (USS). Directive 45 replaced a 1951 letter directive on 15.1.53.
24 14D 51 APA C 38 17.10.50 3 (51) Troop transport (AP Modified) conversion from MA hull (P2-S1-DN1). 14D: For point-to-point transportation for personnel of DOD and other agencies (MSTS). AP 196-198. See SCB 14B (same directive). Directive 38 replaced a 1950 letter directive on 1.12.52.
25 14E 51 APA C 40 22.12.50
Conversion of SS Mariposa and SS Monterey to troop transports (AP) (USS). Directive 40 replaced a 1950 letter directive on 18.12.52.
26 15 48 AKA N


New 20-knot AKA. Prototypes for new AKA-APA-AGC hull designs. Same objectives as SCB 14. Procurement recommended to be omitted from FY48 (6.46)
27 16 48 AGC N


New fast Amphibious flagship (AGC). 22-24 knots was originally wanted; later cut back to 20 knots. Same objectives as SCB 14. Procurement recommended to be omitted from FY48 (6.46)
28 17 48 LSD N


New 20 knot LSD. Procurement recommended to be omitted from FY48 as current LSD's were little used and adequate (6.46). Revived as SCB 75.
29 18 48 LSM (UOL) C


LSM converted to Underwater Object Locator (UOL). Recommended to be omitted from FY48 (6.46) as the device could be installed on any one of a number of types. Discontinued by 1/47, needed action will be completed prior to 1948 under new development program
30 19
BB (SW) C


Conversion of Kentucky (BB 66) to a "Weapons Carrier." As of 6.46 (BUSHIPS) the new armament had not crystallized sufficiently to permit plans to be developed. The structure of BB 66 was being carried up to the main deck so that the vessel could be floated out of the building dock should occasion arise. The project was in abeyance until lessons learned from design and completion of Project 26A (Hawaii, CB 3) were evaluated. Active prosecution of the project was recommended 6/46.
31 20 47 PT N


PT (metal hull). Project fairly well developed, BUSHIPS 6.46 recommended ordering a few experimental vessels in FY48. Discontinued by 1/47 because contracts were let and funds obligated in 1947. (PT 809-812)
32 21 48 ARS N


Atomic salvage ship (Salvage ship for radioactive waters). Characteristics and requirements were too nebulous for inclusion in FY48. As of 1/47 was awaiting the results of CROSSROADS. The atomic salvage ship requirement led nowhere and the 1948 version of the FY50 program shows SCB 21 as an ATR.
33 22
AO N


Fast AO (replenishment ship) with sufficient speed to keep up with fast task forces and carry fuel, provisions, and ammunition. BUSHIPS 6/46 stated that SCB 22 and SCB 23 presented no technical problems unless the speed was carried to the upper limit of 30 knots mentioned in the CNO memo of 24 May 46. The ex-German Dithmarschen was of this type and BUSHIPS recommended she be placed in service and evaluated.
34 22A
YAG C


12 Liberty Ship conversions. YAG 45-54. This SCB number was probably used for budgetary reasons, the ships being converted by the MA and remaining in MA hands.
35 23 48 AK N


Fast AK to carry balanced load of ammunition stores and provisions for underway replenishment. BUSHIPS 6.46 recommended tnat no auxiliary vessels or landing craft prototypes be included in FY48
36 24
SS N


Midget submarine/guided torpedo to operate from a fleet submarine or other mother ship within enemy harbors or other restricted waters. BUSHIPS 6/46 understood that she was to take the nature of expendable ammunition rather than a naval vessel on the Navy list and should not be in the building program. OP-03 wanted to include it for purposes of development.
37 25 48 LSU/LCV N ltr 22.11.50 4 contracts (52) Improved LCT with increased space for personnel to conduct continuous operation. BUSHIPS in 6.46 stated that the requirements needed to be more clearly determined before building under FY48 was undertaken. For Korean War LCU 1466-1503 ordered 10.1951-4.1952. [1466-73 from Island 31.10.51, 1474 Detroit 31.10.51, 1475-84 Marietta (3 MDAP) 31.10.51, 1485-89 from Reynolds 31.10.51 and to Island 29.12.51 , 1490-92 Detroit 29.12.51, 1493-1500 Port Houston 31.10.51, 1501-3 NSY SFran 2.4.52. (1479-80 previously ord Beth Staten 30.6.51, canc 28.9.51).
38 25A 55 LCU
76 7.1.55 2 contracts (55) Utility Landing Craft (LCU). 32 LCU Pr.25 proposed 9/53 for FY55. LCU 1608-09 (Ordered from Beth Staten 9.9.55)
39 26A
CB (GM) C


CB conversion to guided missile or special weapons ship (26A, 2 ships including Hawaii). Would be needed in FY50 to exploit progress of special weapon development and advance evaluation and decisions re Kentucky. Initial design would provide minimum Special Weapons Battery providing for its later expansion.
40 27
CVA C


Midway experimental conversion to handle new heavier aircraft. Oriskany substituted and begun as 27A in place of Midway, completed as operational vice experimental ship.
41 27A 49 CVA C ltr 4.6.47 8 (49-52) 1 CV for heavier aircraft proposed and CV 34 recommended. Minimal alterations to permit CVA 9 type to operate modern aircraft including new hydraulic catapult and new arresting gear. Oriskany completed thus followed by 8 others. 7 later got 125, Oriskany got 125A, and Lake Champlain got nothing, remaining axial deck.
42 27B
CVA C


Partial conversions to save limited funds (none done)
43 27C 52 CVA C 24 7.2.52 6 (52-53) Aircraft Carriers (Essex class conversion) (Project No. 27C). Studies begun 1951 for Hancock and later, char. revised 23.4.52 (Directive 24A) and 13.5.53 (Directive 24B). Hancock, Intrepid, and Tico completed to this original 27C standard (axial deck). Got steam catapults, new arresting gear, starboard elevator and blister. After the first 3 ships SCB 27C was modified to correspond to the new Forrestal design (canted deck, enclosed bow, etc.) and 16, 31, and 38 received these features too in a single refit.
43.5 27C 55 CVA C 81 27.1.55 3 (56-57) Attack Aircraft Carrier, CVA 19 class (Canted Deck) conversion, Project No. 27C. Addition of canted deck etc. to the 1st 3 SCB 27C conversions (CVA 11, 14, 19) in FY56 and FY57. Done under Proj. 27C and not 125, which was for 27A.
44 28 52 SSG C 9 16.5.51 1 (52) Guided missile submarine (SSG) conversion. SS 282 to SS(GM) (also called SS(SW), special weapons?) with Loon-type guided missiles. "Similar to Cusk [SS 348, also 337, FY48] but to have more modern missiles." These were Regulus.
45 29 48 LSD C

2 (48) LSD 5-6 winterized for Arctic service. To land heavy equipment for rapid airfield construction, air defense, etc. in the Arctic. To carry and launch loaded LCT's and /or LCM's.
46 30 48 ASSP C

2 (48) Convert two inactive SS to carry assault troops and commandos: Perch (ASSP 313) and Sea Lion (ASSP 315). Had hangar on deck for LVT and Jeep.
47 31 48 ASSA C

1 (48) Convert two inactive SS to cargo carrying submarines. Reduced to one (ASSA 317) by 8/47.
48 32
LST N


20-knot LST. No present or projected LST's were capable of accompanying 20 knot assault shipping (other characteristics as SCB 9 or better). 20 knots proved impractical, although radical schemes such as propellers at the bows were tried.
49 33
SSG ?


Submarine (Guided weapons) with heavy offensive guided missiles (long range project, perhaps starting with a missile similar to the V-2). In 4/48 was a Submarine, Guided Missile (SSG) for Regulus
50 34
SSG/Acft ?


Submarine (Aircraft Launcher). To carry, launch, and control aircraft or pilotless aircraft as selected. To advance the offensive capabilities of the air/submarine combination. Project was a long-range study that could include large type sub carriers (25,000 tons) or subs capable of carrying planes or pilotless aircraft with catapult launching only.
51 35 48 SSK N

3 (48-49) Anti-submarine submarine, SS(A/S). Added to FY48 proposal 1/47 as design study. Minimum practicable displacement, 2-21" torpedo tubes forward, 6kts surface and 9 kts subm., ? officers and 18 enlisted. "Of primary importance is the installation of sound-detection equipment of maximum efficiency and performance." SSK designs were from 350 to 750 tons. Became K 1 class (SSK 1-3). K1 auth FY48, awarded FY49. There was no approval directive for SCB 35.
52 36
IFS N


Inshore fire support ship, ex Fire Support Ship, Close In (4/48). LCS(L) successor. Merged with SCB 37 (a LSM(R) successor) in a 20-knot hull.
53 37 52 IFS N 14 26.7.51 1 (52) Inshore fire support ship (IFSS), ex Rocket Support Ship, Close In (4/48). LSM(R) successor. SCB 36 (a LCS(L) successor) merged with it. SCB draft characteristics of 19 May 48 were for a 20-knot LSM(R) with a single 5"/38 gun, 4.2-in mortars, and rocket launchers as in the LSM(R). 20 knots proving impractical, a 15-knot design, Carronade (IFS 1), was adopted in 1951. Originally an APD conversion was envisaged.
54 38
XBB C


Colorado conversion to radio controlled guided missile target.
55 39 49 SS (AO) C

1 (49) Submarine oiler, SS(AO). Tanker sub to replenish beachhead units or ships with fuel. Conversion of an inactive SS. Guavina (SSO/AGSS/AOSS 362, FY49, deliv by 3.51)
56 40
SS (AE) N


A large type sub capable of carrying guided missiles and/or pilotless aircraft for replenishment purposes (see SCB 34). To replenish Super Picket and Super Bombardment subs. To be placed in a long range project category pending development of guided missiles, pilotless aircraft, and the large bombardment or picket type subs.
57 41
CVL C


CVL (33 knot). Conversion of Independence class to CVL/ASW (done as SCB 54).
58 42
AV C


AV converted from LSD
59 43 52, 53 CVE N


New 25 knot 14,700t CVE-ASW to accompany new fast ASW types such as DDE (in early FY52 and FY53, superseded SCB 8 (FY48))
60 44
AVS N


Aviation supply ship AVS
61 45
AMS N


New ocean minesweepers (AMS)
62 45A 50 MSO [AM] N 52 26.7.50 62 (50-54) Minesweeper (AM). MSO 421/511 class (less 450-54). MSO 421 was only FY50. Directive 52 replaced a 1950 letter directive on 10.9.53.
63 45B 55 MSO N 82 16.3.55 3 (55) Ocean Minesweeper (MSO), 182' (wooden hull). MSO 519-21 class. There was also a "180-ft aluminum hull" design
64 46 49 DER C 31 28.2.50 6 (49-51) Conversion of DE(FMR) to DER. Two in FY49 (316-317) and four in FY51 (DER 142, 244, 318, 333). Directive 31 replaced a 1950 letter directive on 30.9.52.
65 46A 54 DER C 56 13.1.54 2 (54) Conversion of DE(WGT) to DER, Project No. 46A (same directive as 46B)
66 46B 54 DER C 56 13.1.54 28 (54-57) Conversion of DE(FMR) to DER, Project No. 46B (same directive as 46A)
67 47 47 SS C 2 30.1.51 16 (48-50) Guppy II submarine conversion. Best attack submarine practicable as a conversion of existing type. 10 on order Oct 46, 12 added 47 (FY48-49), total 24 including 2 GUPPY I prototypes (484 and 486, FY47) that had no snorkel. 15 more proposed in 1948 for FY50 but they were too expensive. The directive is probably for the FY50 boats. Revised with less expensive batteries etc. 25.11.51 as SCB 47C for Guppy IIA (q.v.).
68 47A 51 SS C ltr 31.7.50 10 (51) Submarine GUPPY IA conversion with Sargo vice Guppy batteries (10 in FY51). (SS 319 etc). Excludes Guppy IB which was for MDAP (4 boats, including 2 moved from the FY52 Guppy IIA program)
69 47B 51 SS C ltr 24.11.50 19 (51) Fleet snorkel: Submarine conversion with snorkel only: 19 in FY51 including SS 482 (Snorkel prototype, FY47)
70 47C 52 SS C 2A 20.11.51 16 (52) Guppy IIA submarine conversion (16 in FY52), originally to be Guppy II (SCB 47) but modified with Sargo batteries and one engine removed. (SS 340 etc.) 25 proposed in 1949 for FY51, rejected but 10 restored in early 1950 plus 4 thin-hull conversions for allies (Guppy 1B). See SCB 223 for GUPPY III
71 48 52 CAG C 29 17.11.50 2 (52) CA Guided Missile Conversion, FY52. CAG 1-2. Originally was to have been Wichita (CA 45), deferred for operational trials in Mississippi (AG 128), then done as Boston and Canberra (CAG 1-2). Directive 29 replaced a 1950 letter directive on 30.6.52. AAW mod 003.68 for both canc.
72 49 51 AKS C 33 27.10.50 1 (51) AKS conversion. Replenishment AKS "One-stop replenishment" conversion (originally of an AKA?), became AKS 32. Directive 33 replaced a 1950 letter directive on 29.10.52.
73 50 51 AOR C 34 27.10.50 1 (51) Conversion of AO to AOR. Replenishment oiler, AOR 109, then 110 (Conecuh). Directive 34 replaced a 1950 letter directive on 6.11.52.
74 51
DE



Cheap 240-ft "merchant convoy escort" (PC), led to Dealey. 1,000 tons, 25kts.
75 52
ZZ



Submersible barge for V-2 guided missiles. This was an attempt to implement the wartime German plan to launch V2s from capsules towed by U-boats. Did not get beyond the scale model stage, at which practical difficulties became evident.
76 53 49 DDE C

6 (49) Gearing class conversion to DDE (DDE/K 764-65, 858-61, 6 ships). Limited conversion not including Weapon A, had Hedgehog Mk 15 and four Mk 31 rocket launchers.
77 54 49 CVE, CVL C 13 19.7.51 2 CVL, 10 CVE (49-51) Aircraft Carriers, CVE 105 Class and CVL 22 Class, Mk 5 arresting gear; installation of. In 1948 two experimental ASW task groups were planned, one with a CVE-105 to counter Type 21 subs and one with a CVL to counter Type 26 (Walter) boats. Early ASW conversions (FY49?) were CVL 29 and CVE 116 and 119. Ultimately 2 CVLs (29 under FY49 and 28 under FY51) and 10 CVEs were modernized for ASW, and the larger CVL Saipan also got some of the mods.
78 55 51 LSM (ARC) C ltr 29.9.50 1 (51) LSM 275 to ARC 1 [reclas 55] to lay SOFAR cables down to 700 fathoms.
79 56 50 SST/AGSS N 21 29.11.50 1 (50) Submarine, Experimental and Target. Albacore (AGSS 569), moved back from FY51 to FY 50 using funds for Fletcher DDE conversions due urgency (Friedman p57). Original target designation (SST) was cover for test vehicle, changed from SST to AG(SS) on 1 Oct 51). To Dir 21 from ltr on 1.10.51 followed by 4 changes to 29.9.55. Phase II was in 1956. Directive 21 replaced a 1950 letter directive on 1.10.51.
80 57 51 AF C 36 27.10.50 3 (51-52) AF conversion. Store ships AF 55 (FY51) and 56-57 (FY52), from R2-S-BV1 type. Directive 36 replaced a 1950 letter directive on 26.10.52 for conversion from MATCHLESS.
81 58 50 SSK C

1 (50) SSK conversion from Fleet submarine. FY50 = Grouper. FY52 = other 6
82 58A 50 SSK C 22 3.1.52 6 (52) Conversion of Fleet type submarines to Anti-Submarine Submarine (SSK) Type II. (SSK 214 etc, SSK 1 was Type I?). (For SSK 1-3 see SCB 35, no directive.)
83 59 50 XMAP N 23 3.1.52 1 (50) Cylindrical Countermeasures (XMAP). XMAP 1-2 (#2 canc. 1954). Minesweeping device. In order to simulate all ship signatures a ship-sized device was required. An important part of some postwar minesweeper specifications was the requirement to be able to tow XMAP.
84 60
LVT N


LVT
85 60A
LVT N


LVT(A)
86 60B
LVT N


LVT-3
87 61 51 YY N 4 5.2.51
Service craft characteristics, Shipbuilding and Conversion Programs for FY51 and for FY52 (revised). It contained characteristics for SCB 61B, C, D/N, E, F, G, and H (shown separately below). Directive 62 of 26.5.54, Approved Service Craft Characteristics, was an update thru FY55, it updated SCB 61B, C, E, G, H, and probably N.
88 61A
YR N


Floating workshop (YR). No directive.
89 61B 51 YON N 4 5.2.51 5 (64) Non-self propelled fuel oil barge (YON) (generally YON 80 design). Proposed for FY51, FY52, FY55, and FY56 but none funded. YON 258-262 (FY64, YON 245 type). Continued as 809.YR.
90 61C 51 YFN N 4 17.5.50 38 (51, 63-64) Covered lighter (YFN) (generally YFN 636 design). YFN 1154-1163 (FY51 2nd supplemental, new type). Proposed for FY54 and FY55, not funded. YFN 1196-1204 (FY63, new type), YFN 1205-1223 (FY64, 1196 type). YFN 1224-33 (FY64, later YFNX 25-26 and YC 1461-68). Directive 4 replaced a 1950 letter directive on 5.2.51. Continued in 1965 with YC in 804.67.
91 61D
YRB N


Submarine Repair and Berthing Barge (YRB). To 61N
92 61E 51 YC N 4 17.5.50 36 (51, 59) Open lighter (YC). YC 1366-1385 (FY51 2nd supplemental, new type). YC 1427-1434 (FY59, 61E, new type), YC 1461-68 (FY64, new type, ex YFN 1226-33). Directive 4 replaced a 1950 letter directive on 5.2.51. Continued with YFN as 804.67
93 61F 52 YFB N 4 5.2.51
Ferryboat (YFB). No standard type, dimensions of 146' x 41', 400t suggested by BUSHIPS 1/51. 2 proposed 12/50 for revised FY52 but none funded.
94 61G 51 YCF N 4 5.2.51
Car float (YCF) (generally YCF 14 design). Proposed for FY51, FY52, and FY54 but none funded.
95 61H 51 YOGN N 4 5.2.51
Non-self propelled gasoline barge (YOGN) (generally YON 80 design). Proposed for FY51, FY52, and FY55 but none funded. (The number 61-I was skipped.)
97 61J 52 YRBM N 61 13.5.54 15 (55-63) Repair, Berthing, and Messing Barge (YRBM). (New 2-deck YRBM-1 type, larger than the YRB and with messing added.) YRBM 1-4 (FY55, 61J. contract plans completed 14.5.54, 1-2 awarded NSY Pearl 11.8.54 and begun, expected award of 3-4 30.11.54, built 1955-56), YRBM 5-6 (FY59, 61J, built 1960), YRBM 7 (FY60, built 1960), YRBM 8-12 (FY62, built 1962-63), YRBM 13-15 (FY63, built 1963-64). Continued as 802-66.
98 61K 53 YDT N 28 16.5.52
Diving tender (YDT). Proposed for FY53, not funded. Directive 28 covered new construction of YDT, YFR, and YNG type service craft (Projects 61K, 61L, and 61M). BUSHIPS on 30.7.51 considered that a new design replacing the YDT-1 design and incorporating a steel hull was required along with new dimensions of 132' x 25' x 6.5'
99 61L 53 YFR N 28 16.5.52
Refrigerated lighter (YFR). Proposed for FY53, not funded. BUSHIPS on 30.7.51 considered that the YFR 888 design would require considerable revision and that this craft and many other self propelled lighters were unsatisfactory for continued sea-going service. The mission of providing logistic support to advance bases and small outlying posts might require sea-going service which had not been contemplated in the design of the YFR 888 as a yard lighter.
100 61M 53 YNG N 28 16.5.52
Gate vessel (YNG). Proposed for FY53 and FY54, not funded. BUSHIPS on 30.7.51 considered the dimensions of YNG 31 as unsuitable for this service because of narrow beam and excessive draft. Also the use of a wood hull for this service was not considered appropriate. Instead the bureau recommended that this craft be similar to YNG 22, a non self propelled steel craft designed specifically for this service.
101 61N 51 YRB N 4 5.2.51
Submarine repair and berthing barge (YRB). A standard 500t YFN modified in accordance with arrangement plan for standard single deck YRB that berthed 17 men and provided work benches, storage bins, and work spaces for submarines undergoing overhaul. Started as 61D in 5/49 draft of FY51 program (District Craft Replacement, new const.), proposed for FY51/52 and FY54, but none funded. (The number 61-O was skipped.)
101.5 61N 63 YFN N


YFN for FBM stowage (FY63) (no directive). Number 61N reused?
103 61P 63 YTN (sic) N


"YTN" (FY63) (no directive, expansion unknown).
104 61Q 63 YOG N


"YOG (JP 5)," self propelled JP5 fuel barge (no directive).
105 61R 63 YTM N 184 23.8.62 2 (63) Harbor Tug, Medium (YTM) with cycloidal propulsion (FY63). YTB 772-773 (FY63) were cycloidal, reclas YTM 760-761 in 7/65. Cycloidal (now YTM) continued as 808.73, other YTM (none) continued as 806.69.
107 62 51 MSB N 44 29.1.51 47 (51-52) Minesweeping boat (MSB). MSB 5 class. Directive 44 replaced a 1951 letter directive on 19.1.53.
108 63 51 DE C ltr 26.7.50 1 (51) DE ASW conversion (DE 532, WGT)
109 63A 51 DE C ltr 26.7.50 3 (51) DE ASW conversion, the FY51 version (152 for FMR, 535 for WGT, 644 for TE)
110 64 52 SSN N 18 14.8.51 1 (52) Submarine (nuclear power). Nautilus (SSN 571)
111 64A 53 SSN N 39 15.12.52 1 (53) Submarine, Nuclear powered (Type II). Seawolf (SSN 575). New reactor FY59 (Pr. 648A?)
112 65 52 X N 11 6.6.51 1 (52) 25 ton submarine (X 1)
113 66 49 SSM C

1 (52, canc) Submarine minelayer conversion, SSM 382 (Dropped from FY49-52, reappeared FY52 and Picuda chosen, canc. 1 Oct 52) and ship got SCB 47.
114 67
SSX N


Closed cycle (Walter) submarine. Included in a SCB draft of the FY53 program dated 24.5.51. BUSHIPS on 30.7.51 advised deferring to FY54 so the three closed-cycle plants being developed (ALTON, ELLIS, and WOLVERINE) would be available for evaluation. Ultimately abandoned in favor of SSN
115 68 51 SST N 3 1.2.51 2 (51-52) Coastal type 250 ton submarines. SST 1-2. Training/target submarine to simulate Soviet coastal type. (For SSK 1-3 see SCB 35.)
116 69 51 MSC [AMS] N 48 26.7.50 24 (52-53, 58) Motor Mine Sweepers (AMS) (MDAP and U.S. ships). Improved YMS's for MDAP. U.S. ships were MSC 121-22 (FY52 ex FY51), MSC 190-209 (FY53), MSC 289-90 (FY58). Tonnage of 289-90 charged to leftover tonnage in a 5/54 authorization. Directive 48 replaced a 1950 letter directive on 8.7.53.
117 69A 60 MSC N


Mentioned in a 5/57 document on FY60. 1 ship deleted for FY60 in 7/58.
118 70 52 AD
7 20.3.51
Conversion of MA hull C3-S-A2 to Destroyer tender (AD). May have been for AD 36 (comm. 15.9.50).
119 71 51 AP C 35 17.11.50
Troop Transport, AP conversion from superliner hull (P6-S4-DS1). To be converted from liner United States in wartime. Directive 35 replaced a 1950 letter directive on 12.11.52.
120 72 52 DE N 5 8.2.51 13 (52-55) Ocean escort (DE). Initially seen as a new PC (see SCB 51), became Dealey class (DE 1006-1030)
121 73 52 MHC [AMCU} C 43 ca 4.51 31 (52) Conversion of certain hulls to AMCU, Minesweepers, Coastal (Underwater Locator). Emergency conversions of AMS & LSIL to MHC 12-50 (FY52). Directive 43 probably replaced a 1951 letter directive on 14.1.53 [relevant page missing].
122 74 51 DD C

38 (51) Rearmament with 3"/50 AA and four 5": 39 active Fletchers (DD 519 etc). Fit DDs reactivated for Korea to carry 3" vice 40mm mounts.
123 74B 52 CA C ltr 20.7.48 14 (52) Rearmament with 3"/50 AA: Active CAs, all but 71, 122, 131, 136
124 74C 52 CL C

3 (52) Rearmament with 3"/50 AA: Active CLs, only 83, 144, 145
125 74D 52 CLAA C ltr 20.7.48 1 (52) Rearmament with 3"/50 AA: CLAA, only 119
126 74E
BB C


Rearmament with 3"/50 AA: BB 61 class, none
127 75 52 LSD N 15 26.7.51 8 (52-55) New Landing Ship Dock (LSD). Thomaston (LSD 28-35)
128 75A 60 LSD N 138 29.8.58
New construction Dock Landing Ships. 2 in FY60 list of 7/58
129 76
DD C


2100 ton ASW conversion of destroyer, promulgation of minimum characteristics for reserve fleet ships. The idea was to put together a single prototype minimum conversion.
130 77 54 AKA C 16 26.7.51 1 (54) New AKA. Tulare (AKA 112). Auth as new const FY54 (the 26.7.51 char. make no reference to a conversion), but a Mariner was acq instead to save money.
131 78 57 APA C 12 12.7.51 1 (57) New Attack Transport (APA). C4-S-1A (Mariner) conversion. Revised 14.1.55 (Directive 12A). APA 248 Paul Revere (FY57). See Directive 116 for APA 249 (SCB 78A).
132 78A 59 APA C 116 5.7.57 1 (59) Attack Transport (APA). C4-S-1A (Mariner) conversion. Francis Marion (APA 249)
133 79 52 DDR C 10 21.5.51 12 (52) Radar Picket Destroyer (DDR) conversion. Gearing class (DDR 711 etc). These are new conversions to supplement 24 converted 1945.
134 80 52 CVB/A N 17 31.7.51 1 (52) Aircraft Carrier, Large (CVB 59).
134.5 80 53 CVB/A N 54A 20.12.55 3 (53-55) Attack Aircraft Carrier (CVA 60-62). New directive for Saratoga, Ranger, and Independence.
135 81 51 AKST N 37 22.12.50
Technical Stores Issue Ship (AKST), new construction on C2 type hull (similar to AKS 20). Directive 37 replaced a 1950 letter directive on 26.11.52.
136 82 52 AO N 47 13.6.51 6 (52) New construction fleet oiler(AO). Neosho (AO 143) class. A completely new navy design. Directive 47 replaced a 1951 letter directive on 20.5.53.
137 82A 59 AO C 126 21.10.57
Fleet Oiler (AO). Oiler conversion to flagship
138 83 52 CBC C 19 17.9.51
Command Ship (CB conversion). Hawaii to CBC 1. Char undecided 2/51. Ex CB 3 26 Feb 52, back to CB 3 9 Oct 54.
139 84 52 SSR N 27 18.4.52 2 (52) Radar Picket submarine. Sailfish (SSR 572-73)
140 85 53 DD N 25 15.2.52 11 (53-55) New construction destroyer (DD). New fleet destroyer for series production: Forrest Sherman (DD 931-944)
141 85A 56 DD N 72 10.12.54 7 (56) Destroyer (DD). Improved DD 931 type: Hull (DD 945-951)
142 86 52 AK C 53 15.6.51 4 (52) MA hulls VC2-S-AP3, AK alterations. Reactivation of MA VC2-S-AP3 hulls and alteration to AK. For point to point transportation of large quantities of general cargo. To incorporate as many of the capabilities and features of the AK 227 class as is practicable. Probably AK 257-260. Directive 53 replaced a 1951 letter directive on 10.9.53.
143 87 53 AVP N


New AVP type (see also 111) included in a SCB draft of the FY53 program dated 24.5.51. BUSHIPS on 30.7.51 commented that no design study had been made and the proposed type (with docking of seaplanes) had no prototype. The requirements appeared feasible unless a ship considerably larger (possibly one-third larger) than the new LSD was acceptable and BUSHIPS recommended that consideration be given to reducing the number of large seaplanes to be docked from two to one in order to greatly reduce the size of the ship (to a ship possibly one-fourth smaller than the new LSD). One ship was then included in the FY53 program. On 4.1.52 Code 420 advised that there had been no action taken on Project 87 (AVP).
144 88
DD N


Completion of World War II 2200-ton DD hulls, DD 766-767 and 791 (new, inactive). The provision of all electronics gear specified for a 692 class DD was not feasible in existing hulls without unacceptable sacrifices in stability and habitability.
145 89 53 PC N


PC prototype included in a SCB draft of the FY53 program dated 24.5.51. BUSHIPS on 30.7.51 commented that it had not been designed but was expected to be about 180' and 800t. It was doubtful whether an evaluated and reliable variable depth towed sonar would be available in time to incorporate in this ship.
146 90 53 PCE N 32 6.10.52
PCE (Prototype). Included in a SCB draft of the FY53 program dated 24.5.51. BUSHIPS on 30.7.51 commented that it had not been designed but was expected to be about 220' and 1,000t standard displacement.
147 91 53 DM C


Conversion of DM 692 type to handle wide-gauge mines included in a SCB draft of the FY53 program dated 24.5.51. There was also a study for similar conversion of CM 5, as well as for a merchant ship mine laying conversion.
148 92 53 AGC



AGC on a P2-SE2-R1 hull (as AP 120) included in a SCB draft of the FY53 program dated 24.5.51. BUSHIPS on 30.7.51 commented that it had not been designed and that power requirements and electronics arrangements in the ship remained unresolved
149 93 53 AKA



Conversion of an AKA from a VC type hull included in a SCB draft of the FY53 program dated 24.5.51.
150 94 53 LCM(6) N 26 28.2.52 230 (54, 59, 62, 64) Landing Craft, Shipbuilding Projects No. 94, 95, and 96. SCB 94, the LCM(6) Mod 1, was included in a SCB draft of the FY53 program dated 24.5.51, first authorizations FY54 and FY59. In FY59 Mod 2 was developed for easier mass production. Continued as 411.65
151 95 53 LCM(8) N 26 28.2.52 (for Army) Landing Craft, Shipbuilding Projects No. 94, 95, and 96. SCB 95 was the LCM(8). Continued as 412.65
152 96 53 LCVP N 26 28.2.52 1361 (53, 55), 46 (64) Landing Craft, Shipbuilding Projects No. 94, 95, and 96. SCB 96 was the LCVP. Many procured. Continued in 1964 and later
153 97 53 AF N 30 21.7.52 2 (53) Stores Ship (AF) new construction (SCB 97). An internal OPNAV memo of 13 Feb 51 recommended including in the FY53 program four conversions of existing merchant type hulls or new construction fast fleet issue reefers to replace present slow AF's. An AF prototype was included in a SCB draft of the FY53 program dated 24.5.51. BUSHIPS on 30.7.51 commented that the basic design of the C3-S1-DX1 (see AK 277) would be revised to eliminate present criticisms and that ships of the new design would be built with the conversion of the new basic design to AF being accomplished during the building. The four ships in the draft FY53 program were reduced to two on 1 Sep 51 in the program as approved by CNO.
154 98 53 ATR



ATR. An internal OPNAV memo of 19 Apr 51 stated that a prototype ATR was required in order to develop a suitable type ship to render emergency assistance to disabled vessels at sea. No ship of this type was presently available in the Fleets. An ATR was included in a SCB draft of the FY53 program dated 24.5.51. BUSHIPS on 30.7.51 commented that the requirements could generally be met. No design study had been made but it was expected that the ship would be about 200' long and 1,400 tons standard displacement. One ship was then in the FY53 program.
155 99 53 AE



AE (C3) mobilization plan for C3-S-DX1, 1952). BUSHIPS at this time (July 1952) was awarding some ships to private yards because it was "gravely concerned with the prospective difficulty of maintaining an adequate mobilization base of operating private shipyards during Fiscal 1953."
156 100 53 AF



AF (C3) mobilization plan for C3-S-DX1, 1952)
157 101 53 AR-ARH



AR-ARH (C4) mobilization plan for C4-S-1a [Mariner}
158 102 53 AVS



AVS (C3) mobilization planning for C3-S-DX1
159 103 53 ARH



ARH (C4) [mobilization planning?]
160 104 53 AK



AK from Mariner, C4-S-1A [mobilization planning?]
161 105 53 AK



AK (C3) mobilization planning for C3-A-DX1
162 106 53 AKS-AVS



AKS/AVS [mobilization planning?]
163 107 53 AD



AD [mobilization planning?]
164 108
AKST



AKST (Technical Stores Ship) (C3) [mobilization planning?]. On 25 Mar 1952 DCNO (Ops) asked that the AKS and AVS be merged since the main difference was loading; the AKS could also be an AKST.
165 109 54 MHC [AMCU] N 51 4.9.53 1 (54) Mine Hunter (AMCU), new construction, later Mine Hunter Coastal (MHC). Bittern, MHC 43
166 110 54 CVA C 50 2.9.53 2 (54-55) Aircraft Carrier, MIDWAY (CVA 41) class, conversion. First modernization (with angled deck) of CVA 41 and CVA 42. Followed by 101.66 in CVA 41 but 101.67 and 68 deferred for CVA 42
167 110A 57 CVA C 108 14.1.57 1 (57) Aircraft Carrier Coral Sea (CVA 43) conversion. First modernization.
168 111
AVP



AVP (conversion?) (see also 87)
169 112
AO



Arctic AO
170 113
LST



Arctic LST
171 114 54 AE N 42 7.1.53 5 (54-57) New construction Ammunition Ship (AE). Suribachi (AE 21-25) class. Revised 14.12.55 (Directive 42A), 19.6.57 (Directive 42B), 26.5.58 (Directive 42C), all Pr. 114.
172 115 53 AKS N 41 22.12.52
New construction stores issue ships (AKS).
173 116 54 SS N 55 5.1.54 1 (54) Attack Submarines. Conventionally powered attack submarines Grayback (SS 574, FY53, converted to an SSG) and Darter (SS 576, FY54), a slightly enlarged Tang and usually classed with them. (268', 2,475t submerged)
174 117 55 DE C 67 9.6.54
Escort vessel (DE) (Gas Turbine) conversion. Conversion of Mills (DE 383) from a diesel powered plant to a gas turbine plant. Cancelled 1955 as would be too unreliable.
175 118 55 SSG C 59 10.5.54 1 (55) Submarine guided missile conversion (SSG). Conversion of a cargo submarine (SSA 317) to a guided missile sub (SSG 317) as a repeat Tunny
176 119 54 LST N 57 16.2.54 8 (54-55) Improved LST. Fast LST De Soto County, LST 1171-1178. FY54 included 1171, built, and 1172, canc; others FY55.
177 120 54 AP C 58 16.3.54
Conversion of passenger ships to troop transports (AP), for purposes of mobilization planning.
178 121 55 SSN N 65 9.6.54 4 (55-56 Submarine (SSN, small). Skate class (SSN 578-79, 583-4)
179 122 54 CVHA C 60 12.5.54 1 (54) CVE (Amphibious) Helicopter-Personnel Carrier. Conversion of Thetis Bay (CVE 90) to an Assault Helicopter Aircraft Carrier (CVHA 1), later LPH 6.
180 123 63 MCS C 73 13.12.54 2 (63-64) Minecraft Command-Support Ship (MCS) conversion from Landing Ship Vehicle (LSV). MCS 1-2 conversion from LSV 6-7. First proposed 1954, funded only in FY 64/65.
181 124 55 SS N 66 8.6.54
Attack submarine. Growler (SS 577, FY55). As SCB 116 (Darter) but with enlarged attack center to accommodate Regulus guidance equipment and sail enlarged to carry the corresponding guidance radar. Length 274' vice 268' for SCB 116. Completed with Grayback as SSG (SCB 161). Also initial design for Barbel (SS, see SCB 150)
182 125 55 CVA C 63 27.5.54 10 (55-57) CVA 34 class Aircraft Carrier (Canted Deck) conversion. To update SCB 27A (CVA 9) ships with angled deck, enclosed bow, and starboard elevator. Add CVA 34+1 in FY57.
183 125A 57 CVA C 105 14.8.56 1 (57) Attack Aircraft Carrier, CVA 34 Class (Angled Deck Conversion). Update Oriskany to SCB 27C standards including angled flight deck, enclosed bow, Mk 7 arresting gear, steam catapults, and enlarged elevators.
184 126 55 YAGR C 64 3.6.54 16 (55-58) Miscellaneous Auxiliary, Ocean Radar Station Ship (YAG, later YAGR). Guardian (YAGR 41-44/AGR 1-16)
185 127 56 CVA N 89 12.5.55 1 (56) CVA 63 class Attack Aircraft Carrier. Kitty Hawk (CVA 63)
186 127A 57 CVA N 99 3.2.56 1 (57) Attack Aircraft Carrier, CVA 64. Constellation (CVA 64)
187 127B 61 CVA N 148 18.6.59 1 (61) Attack Aircraft Carrier (CVA 66). America
188 127C 63 CVA N 179 25.5.62 1 (63) Attack Aircraft Carrier (CVA 67). John F. Kennedy
189 128 55 LCPL N 79 18.1.55 69 (55-56) Landing Craft Personnel Large (LCPL), revised characteristics. New LCPL, Mk II
190 128A 59 LCPL N 124 4.10.57 166 (59/64) New LCPL. FY59 & FY60 Pr. 128A built by Eliz City SY. Continued as 413.65
190.5 128B 59 LCPL N

With 128A (59/63) No directive. FY59 Pr. 128B built by Marinette. FY63 by Triumph Store Crftrs, Houston.
191 129 55 DL N 71 8.12.54 3 (55) Fast task force escort (DL) (Frigate). DL 6-8, all gun DL successor to DL 2-5, 4 x 5"/54. See also SCB 142.
192 130 56 DDC C 70 9.12.54
Conversion of DD 421 and DD 423 classes of destroyers to DDC (corvette). 2 proposed for FY 56 budget but deleted.
193 131 56 DE N 69 9.12.54 4 (56-57) Escort Vessel (DE). Ocean escort: Claud Jones class (DE 1033-36), austere escort.
194 132 56 SSRN N 86 1.4.55 1 (56) Radar picket submarine (SSRN). Triton (SSRN 586)
195 133 56 ARSD
88 26.4.55
Salvage lifting vessel (ARSD). About 250' oa and 1,400t full load. SCB char of 18.2.55 approved by CNO 24.2.55. Not built
196 134 56 AV C 75 27.12.54 1 (56, canc) AV 4 class seaplane tender conversion. Conversion of AV 5 (Albemarle) for P6M operation (FY56). To evaluate a stern lifting device and a servicing boom for the 60-ton P6M. [Handwritten: An LSV conversion (vice CM) had been suggested 1952, Convair had done a study.]
197 135 56 DDG C 78 14.1.55 1 (56) Conversion of a destroyer (DD 710 class) to a guided missile destroyer (DDG). Gyatt (DDG 712/DDG 1)
198 136 56 MSI N 83 16.3.55 2 (56) Minesweeper, Inshore (MSI). Cove/Cape (MSI 1-2)
199 137 56 SSG N 85 23.3.55
Submarine, Guided Missile (SSG). New construction SSG for Regulus II and the FY56 Regulus sub (one FY56, one FY57). SS 574 and 577 converted instead (SCB 161)
200 137A 56 SSGN N 85B 17.5.56 1 (56) Guided missile submarine (SSG). Reordered as nuclear Halibut (SSGN 587) on 27.2.56.
201 137B
SSGN N


Another SSGN, twice as many missile hangars
202 138 56 ARC C 68 18.11.54 2 (56) Conversion of MC S4-SE2-BE1 design hulls to ARC 3-4. [For ARC 1 see SCB 55.]
203 139 56 YP N 77 7.1.55 12 (56/59) Patrol Craft (YP). New type FY56. Includes YP 654-658 (FY56), YP 659-663 (FY57) (All YP 654 type)
204 139A 59 YP N 146 5.6.59 12 (59) Patrol Craft (YP). Includes YP 654-665 (originally FY59, all in service 3/65, all YP 654 type). Continued as 800.65.
205 140 56 CLG C 80 18.1.55 1 (56) Conversion of a CL 55 class light cruiser to a guided missile cruiser (CLG). Galveston converted to Talos cruiser (CLG 3)
206 140A 57 CLG C 117 16.7.57 2 (57) Conversion of a CL 55 class light cruiser to Fleet Flagship Guided Missile Cruiser CLG (TALOS). Oklahoma City/Little Rock (CLG 4-5,)
207 141 55 LCM(3) N 74 13.12.54
LCM(3). 1954, similar to LCM(6) Mod 1. Not built, the only LCM(3)s were cut down LCM(6)s.
208 142 56 DLG N 84 18.3.55 10 (56-57) Fast Task Force Escort Guided Missile Frigate (DLG). DLG 6-15 (Farragut class), from SCB 129 (all gun).
209 143 56 PCE C 87 6.4.55
Conversion of a minesweeper (MSF) 220' (steel hull) to a Patrol Escort (PCE). For MDAP, cheapest way of getting coastal escorts.
210 144 57 CVA C 90 6.6.55 1 (57) CVS 9 class Aircraft Carrier conversion. Probably an austere upgrade for Lake Champlain (CVA 39) instead of SCB 125. CVA39 became a CVS on 1.8.57.
211 145 57 CVL C


CVL conversion to canted flight deck, FY57. Abandoned in view of limited size of CVLs.
212 146 57 CLG C 96 11.10.55 1 (57) Conversion of a CL 55 Class Light Cruiser to a Guided Missile Cruiser (CLG) (Terrier). Topeka (CLG 8)
213 146A 57 CLG C 118 16.7.57 2 (57) Conversion of a CL 55 class light cruiser to Fleet Flagship Guided Missile Cruiser CLG (TERRIER). Providence/Springfield (CLG 6-7)
214 147 57 YTB N 91 17.6.55 6 (57/59) Harbor Tugs, Large (YTB). Starts with YTB 752-753 (FY57, built 1959-60), YTB 756-759 (FY59, built 1959-61). (752/59 = 752 type)
215 147A 60 YTB N 145 5.6.59 18 (60, 62-64) Harbor Tug, Large (YTB). Includes YTB 760 (FY60), YTB 761-762 (FY61), YTB 763-766 (FY62), YTB 767-771 (FY63), and YTB 774-781 (FY64) (All 760 type). Continued as 805.65. YTB 772-773 (FY63) were cycloidal, became YTM 760-761. See SCB 61R. Cycloidal (now YTM) continued as 808.73, other YTM as 806.69.
216 148
ZZ



[No record of this number]
217 149 57 LCU(A) N 93 1.7.55 15 (56-57,59) Utility Landing Craft (Assault), LCU(A). LCU 1610. The three SCB 149 craft in FY57 were all experimental: LCU 1620 had a Kirsten cycloidal propeller, LCU 1621 had two trainable right-angle drive units, and LCU 1622 was to have had Kort nozzles but was canc. 2 more FY59 (1623-24).
218 149A 63 LCU (A) N 125 4.10.57 1 (63) Utility Landing Craft (Assault) LCU(A). LCU 1625 (also 1626 for Burma)
219 149B 63 LCU (A) N 188 23.11.62
Landing Craft Utility Assault, LCU(A). LCU 1627-28 (FY65): continued as 406.65
220 150 56 SS N 92 24.6.55 3 (56) Submarine, Attack Type. Barbel (SS 580-82). SCB 124 was "less than exciting" for a SS and Portsmouth proposed to design an attack version of Albacore. Requested 9.2.54, prelim design dated 1.5.54, BuShips continued development of the design.
221 151 57 AV C 94 29.7.55
AV 7 Class Seaplane Tender Conversion. Originally AV 4, converted to operate P6M Seamaster
222 152 57 LST N


New 20-knot (sustained) LST. SCB issued preliminary characteristics 22.7.55 (477 x 62 x 6ft, 15ft full load). One prototype (SCB not given) proposed in FY57 as an alternative to eight SCB 119 but neither was approved. The ultimate answer was Newport (SCB 247)
223 153 57 CVA N


CVA 64 (new design ca 7/55 for FY57, abandoned, back to 127A 10/55)
224 154 56 SSN N 95 28.9.55 6 (56-57) Submarine, Attack Type. Skipjack (SSN 585, 588-92)
225 155 57 DDG N 98 16.1.56 23 (57-61) Guided missile destroyer (DDG). DDG 2 (Adams) class
226 156 57 AF N 97 28.11.55 2 (63-64) New construction Store Ship (AF). Early FY57 programs (7-10/55) included one SCB 97 AF, this ship to SCB 156 11/55, gone later 11/55
227 157 58 LPH N 107 6.11.56 3 (58-60) Amphibious Assault Ship (LPH). Iwo Jima (LPH 2)
228 157A 62 LPH N 181 18.7.62 2 (62-63) Amphibious Assault Ship (LPH). LPH 11-12 {includes LPH 9-10 in printout]
229 158 57 CLGN N


CLGN (13,800t. 2 Talos 2-5"/54), (ECLGN added to FY57 Aug-Nov 55, 9,000t, no SCB #, to CLGN 12/55). See SCB 163, 165, 167-168 (all alternative designs) and SCB 169, the ship as built.
230 159 57 LPH C 101 14.3.56 1 (57, canc) Amphibious Assault Ship (LPH) Conversion. LPH 1 converted from Block Island (AKV 30/CVE 106) (Marines wanted a conversion in addition to new const.)
231 160 58 CVA(N) N 100 14.3.56 1 (58) Attack Aircraft Carrier, CVA(N). Enterprise, CVA(N) 65
232 161 53 SSG N 102 6.4.56 2 (53, 55) Guided Missile Submarine. FY57. Grayback and Growler were cut in two on the slip and a new bow section incorporating two missile hangars was added. Growler was 4' shorter than Grayback. In effect, this accelerated completion of the two planned new construction FY57 SSGs (SCB 137).
233 162 57 LCM N 103 25.4.56
LCM (hydrofoil) landing craft. Not designed (Friedman p.390). The FY57 pamphlet has 1 Hydrofoil Landing Craft with a set of foils that could be adapted to 37' LCVP or 56' LCM
234 163
CLGN C


CLGN (10,000t, 1 Terrier, 2-5"/54). "The only sheet in this folder refers to missile radar interference problems."
235 164
AO C


AO conversions from commercial ships for mobilization planning
236 165
CLGN N


CLGN (13,490t, 2 Terrier, 1 Talos, no guns)
237 166 58 SSGN N 106 6.11.56
Guided Missile Submarine SSG(N), Project SCB 166. This was the FY58 SSGN and the first to be designed from the beginning for the missile mission. Permit (SSGN 594) class, early version. TRITON/REGULUS II guided missile submarines
238 166A 58 SSGN N 106A 23.7.57 3 (58), to 188 Guided Missile Submarine SSG(N), Project 166A. Permit (SSGN 594) class. Modified by Directive 106B on 29.1.1958. Later version with four individual missile cylinders. Never built thus because cruise missiles lost out to Polaris, completed as SSN.
239 167
CLGN N


CLGN (13,900t, 2 Talos, 2 Tartar, no guns)
240 168
CLGN N


CLGN (11,700t, 1 Talos, 2 Tartar, no guns)
241 169 57 CLGN N 104 21.7.56 1 (57) Nuclear Powered Guided Missile Cruiser CG(N). Long Beach (CGN 160/CGN 9, 2 Terrier, 1 Talos) and a second proposed for FY59. Modified 11.4.58 (Directive 104A) and 3.3.59 (Directive 104B).
242 170 58 AO(SS)
122 11.9.57
Submarine oiler, AO(SS). Improved Guavina conversion for P6M support
243 171 58 AGB N 114 7.6.57
Icebreaker, Shallow Draft (AGB). 255' x 53' x 14', 2,350t light, 4,470 SHP, 1 ship, not done.
244 172 58 DLG N 113 30.3.57 9 (58-59) Guided Missile Frigate (DLG). Leahy (DLG 16-24, double ended)
245 172A 61 DLG N 153 19.9.60
Guided missile frigate (DLG). Improved DLG 16 design for DLG 26-28 (FY61), replaced with SCB 212.
246 173 58 CG C 112 20.3.57 3 (58-59) Conversion of a CA 68 (CA 122) class heavy cruiser to a Guided Missile Cruiser, CG (TALOS). CG 10-12. Directive 112D (30.12.59) and Directive 112E (15.12.61) added FBM (Polaris), see SCB 173A.
247 173A 60 CG C 151 30.12.59
Guided missile cruiser CG (Talos-FBM). FY60 conversion of Baltimore class cruisers with eight Polaris tubes in place of the six Regulus II of SCB 173. Abandoned in favor of Typhon. Similar designs with FBM for the previous FY58-59 conversions were Directive 112D (30.12.59) and Directive 112E (15.12.61)
248 174
CG C


Conversion parallel to CG 10 from CA 134 class to CG
249 175 58 AOR N


Replenishment fleet tanker (AOR)
250 176 58 AV C 110 28.2.57
AV (CVE 105 class conversion) for P6M
251 177 60 AVB C 132 22.5.58 1 (61) Advanced Aviation Base Ship (AVB) (LST conversion). Tallahatchie County (AVB 2). Continued as 701.
252 178 58 SSN N 111 7.3.57 1 (58) Small Attack Submarine Tullibee SS(N). SSN 597
253 179 58 AGS C 109 25.2.57 3 (58) Surveying ship (AGS). Bowditch class (AGS 21-23)
254 180 59 SSBN N 115 17.6.57 5 (59/61) Guided Missile Submarine SSG(N) (FBM), later Fleet Ballistic Missile Submarine SSB(N). Ethan Allen (SSBN 608-11 & 18)
255 180A 58 SSBN N 128 29.1.58 5 (58) Guided Missile Submarine SSGN(FBM), later SSBN. SSBN 598 602 conversion from 1st 589-90 and 598-600
256 181
AGF C


AH 12 conversion to Mid-East Flagship. Referred to as "AH 12 conversion," reference is to AH 12 used as basis for CM 5 conversion. See SCB 191
257 182 59 AGSS C 123 2.10.57 1 (59) Conversion of Auxiliary Submarine Albacore (AGSS 569, FY59 and FY61). Phase III (FY59) (same directive as Phase IV)
257.5 182 61 AGSS C 150 3.8.59 1 (61) Conversion of Auxiliary Submarine Albacore (AGSS 569, FY59 and FY61). Phase IV (FY61) (same directive as Phase III)
258 183 59 PCS N


PCS FY59. Steel, 130' pp x 23', 150t light, 3200BHP diesel & gas,
259 184 59 SC N


Sub chaser (SC). Steel, 100' pp x 20', 90t light, 2900BHP diesel & gas
260 185 60 AGOR N 130 25.4.58 3 (60-61) Oceanographic research ship, AGOR 3-5.
261 185A 62 AGOR N 183 7.8.62 4 (62-63) Oceanographic Research Ship (AGOR). AGOR 6/10. Continued as 710.65
262 186 59 AVD C 120 13.8.57 1 (59, canc) Conversion of a LSD to a Aviation Seaplane Support Ship (AVD). For P6M, later to AV 21.
263 187 59 LPD N 127 16.12.57 2 (59-60) Amphibious Transport Dock (LPD). Directive 127B of 12.8.60 adds SCB 187A
264 187A 61 LPD N 127B 12.8.60 1 (61) Amphibious Transport Dock (LPD). SCB 187A adds LPD 3 (flagship version of 187 with extra lower bridge)
265 187B 62 LPD N 178 22.5.62 3 (62) Amphibious Transport Dock (LPD). LPD 4-6 (lengthened) [4-6 are 187A in printout]
266 187C 63 LPD N 199 10.5.63 7 (63-64) Amphibious Transport Dock (LPD). LPD 7-13 (extra lower bridge level for PHIBRON flag) [7-10 are 187B in printout, 11-13 are 187C]. Continued as 402.65 (without flag)
267 188 57 SSN N 119 26.7.57 11+3 (57-61) Submarine Attack Type SS(N). Thresher (SSN 593/621) + 594-96. 613-15 were 688M.
268 188A 62 SSN N 180 2.7.62 16 (62-64) Submarine Attack Type SS(N). Sturgeon (SSN 637/664). Continued as 300.65
269 189 59 DLGN N 121 19.8.57 1 (59) Nuclear Powered Guided Missile Frigate (DLGN). Bainbridge (DLGN 25)
270 190 59 AS C 136 18.8.58 1 (59) Submarine Tender (conversion) (AS). FBM conversion, Proteus (AS 19)
271 191 59 AGF C


Terror (MMF 5) to Mid-East Flagship, FY59. See SCB 181
272 192 61 AGTR C 129 25.4.58 1 (61) Technical research ship (AG) conversion. Oxford (AGTR 1 ex AG 159).
273 192A 62 AGTR C 177 19.4.62 2 (62) Technical Research Ship (AG) (conversion). AGTR 2-3
274 192B 63 AGTR C 202 5.7.63 2 (63) Technical Research Ship (AGTR). AGTR 4-5.
275 193 63 AGS N 147 11.6.59
Surveying ship (AGS). Large type. Continued as 708.65
276 194 60 AS N 137 22.8.58 2 (60, 62) Submarine Tender (AS), new construction. Hunley (AS 31)
277 None 59 EAG C 142 8.12.58 1 FBM Weapons System (Polaris) test ship (EAG). Probably the final design for EAG 154, probably FY59. [In the SCB books at NAVSEC it appeared that EAG 154 was SCB 203, but on a box cover in the NAVSEC preliminary files at Suitland SCB 203 was a 4-reactor CVAN, which Friedman confirms.]
278 195
MSS C 131 6.5.58
Minesweeper, Special (MSS). Converted from Liberty hull. Continued as 500.66 (FY66)
279 196 61 AOE N 134 24.6.58 2 (61,63) New construction Fast Combat Support Ship (AOE). Sacramento (AOE 1). Continued as 711.65
280 197
AG C


Sonar research ship: conversion of Spokane (CLAA 120) to AG 191.
281 198 61 AG N 139 27.10.58 1 (61) Escort research ship (AG). AG 158.
281.5 198A 61 AGDE N 139A 27.2.61 1 (61) Escort research ship (AGDE). Glover (AGDE 1). Modified for FY61 by Directive 139B of 20.12.62.
282 199 60 DE N 140 30.10.58 2 (60) Ocean escort (DE). Bronstein class (DE 1037-38, improved Dealey)
283 199A 61 DE N 158 4.1.61 10 (61-63) Ocean escort (DE). Garcia class (DE 1040/51)
284 199B 62 DEG N 159 4.1.61 6 (62-63) Guided Missile Ocean Escort (DEG). Brooke class (DEG 1-6)
285 199C 64 DE 10 190 8.3.63 10 (64) Ocean escort (DE). Knox class (DE 1052-1061). Continued as 200.65
286 200
DDE N


PE (but S.M. claim DD 791 to DDE, complete incomplete hull) [or DE 1062]
287 201 58 AV N 133 6.6.58
Seaplane tender (AV). New construction.
288 202 60 PC(H) N 135 25.7.58 1 (60) Hydrofoil Patrol Craft, PC(H). High Point (PCH 1)
289 203 59 CVAN N


Austere CVAN with 4 reactors for FY59 (the FY58 CVAN was a repeat SCB 160). Was in a FY60 list of 7/58. BS reported its design study for a 4-reactor carrier in May 1959 for FY60, then FY61. (Friedman p.317.)
290 204 59 SS ex SSR C 141 5.11.58 2 (59) Submarines, Fleet Snorkel (SS) limited conversion type 11. SSR 572/5 from SSR (type no longer needed) to SS.
291 205 61 AGM C 144 31.3.59 1 (61) Pacific Missile Range (PMR) instrumentation ship. Range Tracker (AG 160/AGM 1)
292 205A 62 AGM C 162 8.3.61 1 (62) Missile Range Instrumentation Ship (AGM). AGM 8 conversion of Victory ship.
293 206 60 DD C 143 24.2.59 77 (60-64) Destroyer conversion (DD 710 Class FRAM Mark I) (DD 786 etc). Modified by Directive 143A on 26.1.61.
294 206A 64 DD C 198 2.5.63 2 (64) Destroyer conversion (DD 825 class FRAM Mark I). DD 825, 827
295 207 61 AGSS N 149 8.7.59
Deep diving submarine (AGSS). Dolphin (AGSS 555)
296 208 61 AFS N 152 12.1.60 3 (61-64) Combat store ship (AFS). Mars (AFS 1). Continued as 705.65
297 209 61 AGMR N


AGMR (Major Relay Receiving Ship). A program planning document dated 13 Jan 1959 had a line for "AGMT/MR Major Relay Ship" with two in FY61 and 2 in FY62. These appear to have been quickly dropped from the program, but see SCB 215 and 228.
298 210 61 AGMT N


AGMT (Major Relay Transmitting Ship). A program planning document dated 13 Jan 1959 had a line for "AGMT/MR Major Relay Ship" with two in FY61 and 2 in FY62. These appear to have been quickly dropped from the program, but see SCB 215 and 228.
299 211
CVAN N


Austere CVAN with 4 reactors, rejected for low speed and smaller deck angle: Friedman p.317.
300 212 61 DLG N 160 4.1.61 9 (61-62) Guided missile frigate (DLG). Belknap class (DLG 26-34)
301 213
AGOR N


Oceanographic research ship (500 ton)
302 214 62 AGS N 157 13.12.60 1 (62) Surveying ship (AGS). Kellar (AGS 25). Continued as 709.65
303 215 63 AGMR C 154 2.12.60 1 (63) Major communications relay ship (AGMR). Conversion from AKV: Annapolis (AGMR 1) from Gilbert Islands. Updated for FY63 by Directive 154A of 9.5.63 and for the FY64 ship by Directive 201 of 14.6.63 (both still SCB 215). As of 12/63 the FY64 ship was to be a repeat of the FY63 ship (AGMR 1) but electronics differed (5 more transmitters etc.) raising cost. FY64 AKV conversion canc. early 64 when Saipan (CC 3) became available
304 215A 64 AGMR C 201A 25.3.64 1 (64) Major communications relay ship conversion, FY64. Saipan (NECPA, CC3, FY63, canc.) substituted as AGMR 2 for a second AKV as Project SCB 215A and renamed Arlington.
305 216 61 SSBN N 169 18.12.61 9 (61) Fleet Ballistic Missile submarine. Lafayette class (SSBN 616-26 less 618, 621)
306 216A 62 SSBN N

22 (62-64) Later Lafayette class, SSBN 627/659
307 217 62 AO N 167 20.9.61
New Oiler (AO). Very similar to AO 143 class except greater beam and rig updated to three M-frames like those in AOE 1 between the bridge and after deckhouse. Armament: four twin 3"/50, all aft. Not built.
308 218
AGSL



Satellite Launching Ship, AGSL, to handle NASA's Scout orbital launch vehicle at sea. Between 15 and 18.8.60 was AVSL when the plan was to convert CURTISS (AV 4). Added to the budget planning process as AGSL 9/1960. Studies conducted in 1960 for conversions of EAG 154, EAG 153, and AVM 1 with EAG 154 reported 10/1960 as the most promising. An undated graphic also shows a new construction AGSL. Continued as 900.65
309 219 62 AG(EH) N 156 14.12.60 1 (62) Hydrofoil research ship, AG(EH). Plainview (AGEH 1)
310 220 62 PT N


PT, cancelled. PTF 3-16 of Norwegian 'Nasty' type bought under this number
311 221 61 LCSR N 155 7.12.60 4 contracts (61-63) Landing Craft Swimmer Reconnaissance (LCSR). Includes 7 FY62 and 2 FY64. All by United Boatbuilders, Bellingham.
312 222 62 DLGN N 161 4.1.61 1 (62) Nuclear Guided Missile Frigate, DLG(N). Truxtun (DLGN 35)
313 223 62 SS C 164 26.6.61 9 (62) Submarine conversion (Guppy III). 9 boats. Also FRAM, all ex Guppy II.
314 224 63 AO C 163 31.5.61 105-109 (63-64) Oiler (AO 22 class) conversion. Jumbo, AO 105-9.
315 225 62 AG C 168 27.9.61 1 (62) Satellite communications ship. Kingsport (AG 164), to support SYNCOM.
316 226 63 AGS N 165 11.7.61 2 (63-64) Surveying ship (AGS). Silas Bent (AGS 26-27).
317 227 63 DLGN N 171 1.1.62
Nuclear Powered Guided Missile Frigate DLG(N). Typhon DLGN, 9,900t for FY63 (1 long-range and 2 medium range missile launchers, a 3,400 element radar). Attention then shifted to SCB 230. Revived for FY65, continued as 240.65.
318 228 62 CC C 166 31.7.61 2 (62-63) Command ship (CC) conversion. For NECPA. Wright (CVL 49) to CC 2 FY62. Saipan (CVL 48) to CC 3 FY63, begun at Alabama DD, canc. ca. Feb 64 and to AGMR 2 as SCB 215A (Presidential approval 14 Aug 64). For AGMR 2 as a AKV/CVE conversion see SCB 215.
319 229 63 PGM/PG N 175 5.3.62 4 (63-64) Motor Gunboat (PGM). Asheville (PGM/PG 84-87). Continued as 600.65
320 230
CG N


Typhon CG (2 long-range and 2 medium range missile launchers, a 10,000 element radar)
321 231
CC N


Command Ship CC (1962 proposal for new construction, NECPA), also listed as new construction ACSH (expansion unknown). See SCB 228.
322 232 63 AE C 174 15.1.62 5 (63-64) Ammunition Ship (AE 21-23 class) conversion. AE FAST (new missile-handling system), AE 21-25.
323 233 63 AVM C 170 18.12.61 1 (63) Norton Sound (AVM 1) Typhon prototype conversion. Updated by Directive 170A of 12.4.63 for FY63. The original conversion of Norton Sound carried no SCB number.
324 234 63 AK C 173 10.1.62 2 (63-64) Cargo Ship FBM (T-AK-FBM). AK 279/280 conversion to one-stop supply for FBM tenders (Polaris resupply). Continued as 715.65
325 235
AOR



Replenishment oiler AOR. Probably continued as 707.65.
326 236 63 LSV N 182 23.7.62 1 (63) Vehicle Cargo Ship (T-LSV RO/RO). Sea Lift (AK 278/LSV 9/AKR 9). Continued as 712.65
327 237 63 ARDM C

2 (63-64) ARD conversion: ARDM 1 (FY63 by BUDOCKS, ex ARD 19, Oak Ridge) ARDM 2 (FY64 in SCN, ex ARD 26, Alamogordo). Continued as 718.66.
328 238 63 AS N 172 5.1.62 2 (63-64) Submarine tender (AS) new construction. Simon Lake class (AS 33-34). Continued as 714.65
329 239
DD N


New SEAHAWK destroyer (ASW), canc.
330 240 64 DDG C 185 7.9.62 4 (64) Destroyer conversion (DD931/945 classes) to Guided Missile Destroyers (DDG). Forrest Sherman DD 932/944 (4) to DDG 31-34
331 241 64 DDG C 187 6.11.62 2 (64) Frigate conversion (DL 2 class) to guided missile destroyers (DDG). DL 2-3 to DDG 35-36
332 242
SS C


FRAM and conversion to attack sub (SS) of SSR Sailfish and Salmon (572-3)
333 243
DLG N


Typhon DLG, first presented Nov 62, deferred 1964. 240.65 was continuation of 227, not 243.
334 244 64 AD N 186 16.10.62 1 (64) Destroyer Tender (AD). Samuel Gompers (AD 37). Continued as 700.65
335 245 64 SSN N 189 27.2.63 1 (64) Submarine attack type, SS(N). Attack submarine Narwhal (SSN 671)
336 246
T-AO C


MSTS tankers T-AO 166 and 167. Continued as 713.65
337 247 64 LST N


New 20-knot LST (Newport class). This single FY64 ship was deleted by Congress but reinstated in FY65. Continued as 405.65
338 248
AGC N


Amphibious force flagship AGC 19, 20 (later LCC). Continued as 400.65
339 249
AE N


Ammunition ship Kilauea (AE 26). Continued as 703.65
340 250 63 CVAN N 203 16.7.63
Attack Aircraft Carrier, CVA(N) 67. Full-sized CVAN with 4 reactors for FY63. McNamara chose CVA 67 instead.
341 251 64 DD C 218 20.3.64 1 (64) Destroyer ASW modernization. Barry (DD 933). Continued as 222.67.
342 252
PGH N 231 26.8.64
Hydrofoil Gunboat (PGH), SCB Project No. 252. Deferred, resumed as 601.66. Built as PGH 1-2, Flagstaff/Tucumcari (FY66).