| Type | # | Name | Shipbuilder | Hull # | LDT | FY | Keel Laid | Launched | Delivered | Days on Ways | Days in Water | Total Days | Disposition |
| SS | 198 | Tambor | Electric Boat | 35 | 1938 | 16-Jan-39 | 20-Dec-39 | 3-Jun-40 | 338 | 166 | 504 | Scrapped 1960 | |
| SS | 199 | Tautog | Electric Boat | 36 | 1938 | 1-Mar-39 | 27-Jan-40 | 3-Jul-40 | 332 | 158 | 490 | Scrapped 1960 | |
| SS | 200 | Thresher | Electric Boat | 37 | 1938 | 27-Apr-39 | 27-Mar-40 | 21-Aug-40 | 335 | 147 | 482 | Scrapped 1948 | |
| SS | 201 | Triton | Portsmouth NSY | 1938 | 5-Jul-39 | 25-Mar-40 | 15-Aug-40 | 264 | 143 | 407 | Sunk by Japanese destroyers 1943 | ||
| SS | 202 | Trout | Portsmouth NSY | 1938 | 28-Aug-39 | 21-May-40 | 15-Nov-40 | 267 | 178 | 445 | Presumed sunk 1944 | ||
| SS | 203 | Tuna | Mare Island NSY | 1938 | 19-Jul-39 | 2-Oct-40 | 2-Jan-41 | 441 | 92 | 533 | Sunk as target 1948 | ||
| SS | 204 | Mackerel | Electric Boat | 38 | 1939 | 6-Jun-39 | 28-Sep-40 | 31-Mar-41 | 480 | 184 | 664 | Scrapped 1947 | |
| SS | 205 | Marlin | Portsmouth NSY | 1939 | 23-May-40 | 29-Jan-41 | 1-Aug-41 | 251 | 184 | 435 | Scrapped 1946 | ||
| SS | 206 | Gar | Electric Boat | 39 | 1939 | 27-Dec-39 | 7-Nov-40 | 14-Apr-41 | 319 | 158 | 477 | Scrapped 1960 | |
| SS | 207 | Grampus | Electric Boat | 40 | 1939 | 14-Feb-40 | 23-Dec-40 | 23-May-41 | 312 | 151 | 463 | Sunk by Japanese destroyers in Blackett Strait 1943 | |
| SS | 208 | Grayback | Electric Boat | 41 | 1939 | 3-Apr-40 | 31-Jan-41 | 30-Jun-41 | 305 | 150 | 455 | Sunk by Japanese aircraft and gunfire in the East China Sea 1944 | |
| SS | 209 | Grayling | Portsmouth NSY | 1939 | 15-Dec-39 | 4-Sep-40 | 1-Mar-41 | 264 | 178 | 442 | Sunk in the Philippines 1943 | ||
| SS | 210 | Grenadier | Portsmouth NSY | 1939 | 1-Apr-40 | 29-Nov-40 | 1-May-41 | 242 | 153 | 395 | Bombed in the Indian Ocean and scuttled 1943 | ||
| SS | 211 | Gudgeon | Mare Island NSY | 1939 | 22-Nov-39 | 25-Jan-41 | 21-Apr-41 | 429 | 86 | 515 | Presumed sunk 1944 | ||
| SS | 212 | Gato | Electric Boat | 42 | 1940 | 5-Oct-40 | 21-Aug-41 | 31-Dec-41 | 320 | 132 | 452 | Scrapped 1960 | |
| SS | 213 | Greenling | Electric Boat | 43 | 1940 | 12-Nov-40 | 20-Sep-41 | 21-Jan-42 | 312 | 123 | 435 | Scrapped 1960 | |
| SS | 214 | Grouper | Electric Boat | 44 | 1940 | 28-Dec-40 | 27-Oct-41 | 12-Feb-42 | 303 | 108 | 411 | Scrapped 1970 | |
| SS | 215 | Growler | Electric Boat | 45 | 1940 | 10-Feb-41 | 22-Nov-41 | 20-Mar-42 | 285 | 118 | 403 | Presumed sunk 1944 | |
| SS | 216 | Grunion | Electric Boat | 46 | 1940 | 1-Mar-41 | 22-Dec-41 | 11-Apr-42 | 298 | 110 | 408 | Presumed sunk off Kiska Island 1942 | |
| SS | 217 | Guardfish | Electric Boat | 47 | 1940 | 1-Apr-41 | 20-Jan-42 | 8-May-42 | 296 | 108 | 404 | Sunk as target 1961 | |
| SS | 218 | Albacore | Electric Boat | 48 | 1940 | 21-Apr-41 | 17-Feb-42 | 1-Jun-42 | 302 | 104 | 406 | Sunk by mines off Hokkaido 1944 | |
| SS | 219 | Amberjack | Electric Boat | 49 | 1940 | 15-May-41 | 6-Mar-42 | 19-Jun-42 | 295 | 105 | 400 | Sunk by depth charges off Rabaul 1943 | |
| SS | 220 | Barb | Electric Boat | 50 | 1940 | 7-Jun-41 | 2-Apr-42 | 8-Jul-42 | 299 | 97 | 396 | To Italy as Enrico Tazzoli (S 511) 1954, scrapped 1973 | |
| SS | 221 | Blackfish | Electric Boat | 51 | 1940 | 1-Jul-41 | 18-Apr-42 | 22-Jul-42 | 292 | 95 | 387 | Scrapped 1959 | |
| SS | 222 | Bluefish | Electric Boat | 64 | 1940 | 5-Jun-42 | 21-Feb-43 | 24-May-43 | 261 | 92 | 353 | Scrapped 1959 | |
| SS | 223 | Bonefish | Electric Boat | 65 | 1940 | 25-Jun-42 | 7-Mar-43 | 31-May-43 | 256 | 85 | 341 | Sunk by gunfire off Honshu 1945 | |
| SS | 224 | Cod | Electric Boat | 67 | 1940 | 21-Jul-42 | 21-Mar-43 | 21-Jun-43 | 243 | 92 | 335 | Memorial in Cleveland OH 1975 | |
| SS | 225 | Cero | Electric Boat | 69 | 1940 | 24-Aug-42 | 4-Apr-43 | 4-Jul-43 | 224 | 91 | 315 | Scrapped 1970 | |
| SS | 226 | Corvina | Electric Boat | 70 | 1940 | 21-Sep-42 | 9-May-43 | 6-Aug-43 | 231 | 89 | 320 | Sunk by torpedo off Truk 1943 | |
| SS | 227 | Darter | Electric Boat | 72 | 1940 | 20-Oct-42 | 6-Jun-43 | 7-Sep-43 | 230 | 93 | 323 | Wrecked off Palawan and scuttled 1944 | |
| SS | 228 | Drum | Portsmouth NSY | 1940 | 11-Sep-40 | 12-May-41 | 1-Nov-41 | 243 | 173 | 416 | Struck 1968; memorial in Mobile AL | ||
| SS | 229 | Flying Fish | Portsmouth NSY | 1940 | 6-Dec-40 | 9-Jul-41 | 10-Dec-41 | 215 | 154 | 369 | Scrapped 1959 | ||
| SS | 230 | Finback | Portsmouth NSY | 1940 | 5-Feb-41 | 25-Aug-41 | 31-Jan-42 | 201 | 159 | 360 | Scrapped 1959 | ||
| SS | 231 | Haddock | Portsmouth NSY | 1940 | 31-Mar-41 | 20-Oct-41 | 14-Mar-42 | 203 | 145 | 348 | Scrapped 1960 | ||
| SS | 232 | Halibut | Portsmouth NSY | 1940 | 16-May-41 | 3-Dec-41 | 10-Apr-42 | 201 | 128 | 329 | Scrapped 1947 | ||
| SS | 233 | Herring | Portsmouth NSY | 1940 | 14-Jul-41 | 15-Jan-42 | 4-May-42 | 185 | 109 | 294 | Sunk in the Kurile Islands 1944 | ||
| SS | 234 | Kingfish | Portsmouth NSY | 1940 | 29-Aug-41 | 2-Mar-42 | 20-May-42 | 175 | 79 | 254 | Scrapped 1960 | ||
| SS | 235 | Shad | Portsmouth NSY | 1940 | 24-Oct-41 | 15-Apr-42 | 12-Jun-42 | 173 | 58 | 231 | Scrapped 1960 | ||
| SS | 236 | Silversides | Mare Island NSY | 1940 | 4-Nov-40 | 26-Aug-41 | 15-Dec-41 | 295 | 111 | 406 | Struck 1969, memorial in Chicago IL 1973 | ||
| SS | 237 | Trigger | Mare Island NSY | 1940 | 1-Feb-41 | 22-Oct-41 | 30-Jan-42 | 263 | 100 | 363 | Sunk in East China Sea 1945 | ||
| SS | 238 | Wahoo | Mare Island NSY | 1940 | 28-Jun-41 | 14-Feb-42 | 15-May-42 | 231 | 90 | 321 | Sunk by Japanese aircraft in LaPerouse Strait 1943 | ||
| SS | 239 | Whale | Mare Island NSY | 1940 | 28-Jun-41 | 14-Mar-42 | 1-Jun-42 | 259 | 79 | 338 | Scrapped 1960 | ||
| SS | 240 | Angler | Electric Boat | 74 | 1940 | 9-Nov-42 | 4-Jul-43 | 1-Oct-43 | 237 | 89 | 326 | Scrapped 1974 | |
| SS | 241 | Bashaw | Electric Boat | 75 | 1940 | 4-Dec-42 | 25-Jul-43 | 25-Oct-43 | 233 | 92 | 325 | Scrapped 1969 | |
| SS | 242 | Bluegill | Electric Boat | 77 | 1940 | 17-Dec-42 | 8-Aug-43 | 11-Nov-43 | 234 | 95 | 329 | Scuttled 1970 | |
| SS | 243 | Bream | Electric Boat | 79 | 1940 | 5-Feb-43 | 17-Oct-43 | 24-Jan-44 | 255 | 99 | 354 | Sunk as target 1969 | |
| SS | 244 | Cavalla | Electric Boat | 80 | 1940 | 4-Mar-43 | 14-Nov-43 | 29-Feb-44 | 256 | 107 | 363 | Memorial in Galveston TX 1971 | |
| SS | 245 | Cobia | Electric Boat | 81 | 1940 | 17-Mar-43 | 28-Nov-43 | 29-Mar-44 | 257 | 122 | 379 | Memorial in Manitowoc WI 1970 | |
| SS | 246 | Croaker | Electric Boat | 82 | 1940 | 1-Apr-43 | 19-Dec-43 | 21-Apr-44 | 263 | 124 | 387 | Memorial in Groton CT 1976 | |
| SS | 247 | Dace | Electric Boat | 66 | 1940 | 22-Jul-42 | 25-Apr-43 | 23-Jul-43 | 277 | 89 | 366 | To Italy as Leonardo da Vinci (S 510) 1955, scrapped 1973 | |
| SS | 248 | Dorado | Electric Boat | 68 | 1940 | 27-Aug-42 | 23-May-43 | 28-Aug-43 | 269 | 97 | 366 | Lost at sea off US Atlantic Coast 1943 | |
| SS | 249 | Flasher | Electric Boat | 71 | 1940 | 30-Sep-42 | 20-Jun-43 | 25-Sep-43 | 264 | 97 | 361 | Scrapped 1963 | |
| SS | 250 | Flier | Electric Boat | 73 | 1940 | 30-Oct-42 | 11-Jul-43 | 18-Oct-43 | 255 | 99 | 356 | Sunk by mines in Balabac Strait 1944 | |
| SS | 251 | Flounder | Electric Boat | 76 | 1940 | 5-Dec-42 | 12-Aug-43 | 29-Nov-43 | 250 | 109 | 359 | Scrapped 1960 | |
| SS | 252 | Gabilan | Electric Boat | 78 | 1940 | 5-Jan-43 | 19-Sep-43 | 28-Dec-43 | 256 | 100 | 356 | Scrapped 1960 | |
| SS | 253 | Gunnel | Electric Boat | 52 | 1940 | 21-Jul-41 | 17-May-42 | 20-Aug-42 | 301 | 95 | 396 | Scrapped 1959 | |
| SS | 254 | Gurnard | Electric Boat | 53 | 1940 | 2-Sep-41 | 1-Jun-42 | 18-Sep-42 | 273 | 109 | 382 | Scrapped 1961 | |
| SS | 255 | Haddo | Electric Boat | 54 | 1940 | 1-Oct-41 | 21-Jun-42 | 9-Oct-42 | 264 | 110 | 374 | Scrapped 1959 | |
| SS | 256 | Hake | Electric Boat | 55 | 1940 | 1-Nov-41 | 17-Jul-42 | 30-Oct-42 | 259 | 105 | 364 | Stricken 1967 | |
| SS | 257 | Harder | Electric Boat | 56 | 1940 | 1-Dec-41 | 19-Aug-42 | 2-Dec-42 | 261 | 105 | 366 | Sunk by depth charges off Luzon 1944 | |
| SS | 258 | Hoe | Electric Boat | 57 | 1940 | 2-Jan-42 | 17-Sep-42 | 16-Dec-42 | 257 | 90 | 347 | Scrapped 1960 | |
| SS | 259 | Jack | Electric Boat | 58 | 1940 | 2-Feb-42 | 16-Oct-42 | 6-Jan-43 | 256 | 82 | 338 | To Greece as Amfitriti (S 78) 1958, scrapped 1972 | |
| SS | 260 | Lapon | Electric Boat | 59 | 1940 | 21-Feb-42 | 27-Oct-42 | 23-Jan-43 | 248 | 88 | 336 | To Greece as Poseidon (S 79) 1957, scrapped 1976 | |
| SS | 261 | Mingo | Electric Boat | 60 | 1940 | 21-Mar-42 | 30-Nov-42 | 12-Feb-43 | 254 | 74 | 328 | To Japan as Kuroshio (SS 501) 1955, scrapped 1966 | |
| SS | 262 | Muskallunge | Electric Boat | 61 | 1940 | 7-Apr-42 | 13-Dec-42 | 15-Mar-43 | 250 | 92 | 342 | To Brazil as Humaita (S 14) 1957, sunk as target 1969 | |
| SS | 263 | Paddle | Electric Boat | 62 | 1940 | 1-May-42 | 30-Dec-42 | 29-May-43 | 243 | 150 | 393 | To Brazil as Riachuelo (S 15) 1957, scrapped 1968 | |
| SS | 264 | Pargo | Electric Boat | 63 | 1940 | 21-May-42 | 24-Jan-43 | 26-Apr-43 | 248 | 92 | 340 | Scrapped 1961 | |
| SS | 265 | Peto | Manitowoc Sbldg. | 1940 | 18-Jun-41 | 30-Apr-42 | 21-Nov-42 | 316 | 205 | 521 | Scrapped 1960 | ||
| SS | 266 | Pogy | Manitowoc Sbldg. | 1940 | 15-Sep-41 | 23-Jun-42 | 10-Jan-43 | 281 | 201 | 482 | Scrapped 1959 | ||
| SS | 267 | Pompon | Manitowoc Sbldg. | 1940 | 26-Nov-41 | 15-Aug-42 | 17-Mar-43 | 262 | 214 | 476 | Scrapped 1960 | ||
| SS | 268 | Puffer | Manitowoc Sbldg. | 1940 | 16-Feb-42 | 22-Nov-42 | 27-Apr-43 | 279 | 156 | 435 | Scrapped 1960 | ||
| SS | 269 | Rasher | Manitowoc Sbldg. | 1940 | 4-May-42 | 20-Dec-42 | 8-Jun-43 | 230 | 170 | 400 | Scrapped 1974 | ||
| SS | 270 | Raton | Manitowoc Sbldg. | 1940 | 29-May-42 | 24-Jan-43 | 13-Jul-43 | 240 | 170 | 410 | Scrapped 1973 | ||
| SS | 271 | Ray | Manitowoc Sbldg. | 1940 | 20-Jul-42 | 28-Feb-43 | 27-Jul-43 | 223 | 149 | 372 | Scrapped 1960 | ||
| SS | 272 | Redfin | Manitowoc Sbldg. | 1940 | 6-Sep-42 | 4-Apr-43 | 27-Aug-43 | 211 | 145 | 356 | Scrapped 1971 | ||
| SS | 273 | Robalo | Manitowoc Sbldg. | 1940 | 24-Oct-42 | 9-May-43 | 28-Sep-43 | 197 | 142 | 339 | Sunk by mine off Palawan Island 1944 | ||
| SS | 274 | Rock | Manitowoc Sbldg. | 1940 | 23-Dec-42 | 20-Jun-43 | 26-Oct-43 | 179 | 128 | 307 | Scrapped 1972 | ||
| SS | 275 | Runner | Portsmouth NSY | 1940 | 8-Dec-41 | 30-May-42 | 30-Jul-42 | 173 | 61 | 234 | Sunk by mine in North Pacific 1943 | ||
| SS | 276 | Sawfish | Portsmouth NSY | 1940 | 20-Jan-42 | 23-Jun-42 | 26-Aug-42 | 154 | 64 | 218 | Scrapped 1960 | ||
| SS | 277 | Scamp | Portsmouth NSY | 1940 | 6-Mar-42 | 20-Jul-42 | 18-Sep-42 | 136 | 60 | 196 | Sunk by depth charge near Tokyo 1944 | ||
| SS | 278 | Scorpion | Portsmouth NSY | 1940 | 20-Mar-42 | 20-Jul-42 | 1-Oct-42 | 122 | 73 | 195 | Sunk by mine in the Yellow Sea 1944 | ||
| SS | 279 | Snook | Portsmouth NSY | 1940 | 17-Apr-42 | 15-Aug-42 | 24-Oct-42 | 120 | 70 | 190 | Sunk off Taiwan 1944 | ||
| SS | 280 | Steelhead | Portsmouth NSY | 1940 | 1-Jun-42 | 11-Sep-42 | 7-Dec-42 | 102 | 87 | 189 | Scrapped 1961 | ||
| SS | 281 | Sunfish | Mare Island NSY | 1940 | 26-Sep-41 | 2-May-42 | 15-Jul-42 | 218 | 74 | 292 | Scrapped 1960 | ||
| SS | 282 | Tunny |