The basic C2-S-A1s and C2-S-B1s, of which there were 278, were 400 feet in LBP, while the earlier models, of which there were 50, were either 435 or 450 feet.
| USMC # | Shipbuilder | Location | Hull # | Original Name | Design | DWT | Delivered | Disposition |
| 14 | Federal SB | Kearny NJ | 154 | Challenge | C2 | 9,758 | Jul-39 | To USN 1940 as Castor (AKS 1), scrapped 1969 |
| 15 | Federal SB | Kearny NJ | 155 | Red Jacket | C2 | 9,758 | Sep-39 | Scrapped 1974 |
| 16 | Federal SB | Kearny NJ | 156 | Lightning | C2 | 9,758 | Sep-39 | To USN 1941 as Mercury (AK 42, later AKS 20), scrapped 1975 |
| 17 | Federal SB | Kearny NJ | 157 | Flying Cloud | C2 | 9,758 | Nov-39 | To USN 141 as Jupiter (AK 43, later AVS 8), scrapped 1971 |
| 18 | Sun Ship | Chester PA | 175 | Donald McKay | C2 | 8,656 | 27-Jun-39 | To USN 1939 as Polaris (AF 11), scrapped 1974 |
| 19 | Sun Ship | Chester PA | 176 | Mormachawk | C2 | 8,656 | 27-Jul-39 | To USN 1939 as Arcturus (AK 18, later AKA 1), sold private 1947, scrapped 1971 |
| 20 | Sun Ship | Chester PA | 177 | Mormacwren | C2 | 8,656 | 18-Aug-39 | To USN 1939 as Algorab (AK 25, later AKA 8), sold private 1947, scrapped 1973 |
| 21 | Sun Ship | Chester PA | 178 | Mormacdove | C2 | 8,656 | 21-Sep-39 | To USN 1939 as Alchiba (AK 23, later AKA 6), sold private 1948, scrapped 1973 |
| 22 | Tampa SB | Tampa FL | 33 | Sea Witch | C2 | 8,656 | Jul-40 | Sold private 1946, scrapped 1963 |
| 23 | Tampa SB | Tampa FL | 34 | Shooting Star | C2 | 8,656 | Nov-40 | To USN 1940 as Lassen (AE 3), scrapped 1974 |
| 24 | Tampa SB | Tampa FL | 35 | Surprise | C2 | 8,656 | May-41 | To USN 1941 as Kilauea (AE 4), renamed Mount Baker, scrapped 1974 |
| 25 | Tampa SB | Tampa FL | 36 | Sweepstakes | C2 | 8,656 | Aug-41 | To USN 1941 as Procyon (AK 19, later AKA 2), scrapped 1973 |
| 26 | Newport News SB | Newport News VA | 373 | Nightingale | C2 | 8,656 | 30-Oct-39 | To Britain 1941 as Empire Egret, later Santa Isabel, then Guiding Star, scrapped 1973 |
| 27 | Newport News SB | Newport News VA | 374 | Stag Hound | C2 | 8,656 | 4-Dec-39 | To USN 1940 as Aldebaran (AF 10), scrapped 1974 |
| 28 | Newport News SB | Newport News VA | 375 | Santa Ana | C2 | 8,656 | 15-Feb-40 | Sold private 1964, scrapped 1967 |
| 29 | Newport News SB | Newport News VA | 376 | Santa Teresa | C2 | 8,656 | 27-Mar-40 | Sold private 1963, scrapped 1968 |
| 30 | Sun Ship | Chester PA | 179 | Mormacgull | C2 | 8,656 | 13-Oct-39 | To USN 1939 as Alcyone (AK 24, later AKA 7), sold private 1947, scrapped 1969 |
| 31 | Sun Ship | Chester PA | 180 | Mormaclark | C2 | 8,656 | 29-Nov-39 | To USN 1939 as Betelgeuse (AK 28, later AKA 11), sold private 1947, scrapped 1972 |
| 32 | Federal SB | Kearny NJ | 158 | Flying Fish | C2 | 9,758 | Jan-40 | Scrapped 1971 |
| 33 | Federal SB | Kearny NJ | 159 | Comet | C2 | 9,758 | Mar-40 | To USN 1941 as Pollux (AKS 2), wrecked and lost in Newfoundland 1942 |
| 72 | Bethlehem Steel | Sparrows Pt. MD | 4341 | Robin Locksley | C2-S | 9,970 | 5-Mar-41 | Scrapped 1970 |
| 73 | Bethlehem Steel | Sparrows Pt. MD | 4342 | Robin Doncaster | C2-S | 9,970 | 16-Apr-41 | To Britain 1941 as Empire Curlew, later Robin Doncaster, then Flying Gull, scrapped 1968 |
| 74 | Bethlehem Steel | Sparrows Pt. MD | 4343 | Robin Kettering | C2-S | 9,970 | 29-May-41 | To USN as Alhena (AK 26, later AKA 9), sold private 1948, scrapped 1971 |
| 99 | Bethlehem Steel | Sparrows Pt. MD | 4350 | Robin Sherwood | C2-S | 9,970 | 16-Jul-41 | Sold private 1946, scrapped 1970 |
| 100 | Bethlehem Steel | Sparrows Pt. MD | 4351 | Robin Tuxford | C2-S | 9,970 | 22-Sep-41 | Sold private 1957, scrapped 1971 |
| 101 | Bethlehem Steel | Sparrows Pt. MD | 4352 | Robin Wentley | C2-S | 9,970 | 3-Nov-41 | Sold private 1946, scrapped 1971 |
| 111 | Sun Ship | Chester PA | 199 | China Mail | C2-SU | 9,620 | 16-Oct-41 | To Britain 1941 as Empire Peregrine, sold private 1947 as Ocean Mail, scrapped 1969 |
| 112 | Sun Ship | Chester PA | 200 | Island Mail | C2-SU | 9,620 | 12-Dec-41 | Sold private 1947, scrapped 1968 |
| 113 | Sun Ship | Chester PA | 201 | Japan Mail | C2-SU | 9,620 | 2-Feb-42 | Scrapped 1969 |
| 114 | Sun Ship | Chester PA | 202 | Lightning | C2-SU-R | 8,595 | 20-May-42 | Scrapped 1971 |
| 115 | Sun Ship | Chester PA | 203 | Surprise | C2-SU-R | 8,595 | 27-Jun-42 | Scrapped 1970 |
| 116 | Sun Ship | Chester PA | 204 | Stag Hound | C2-SU-R | 8,595 | 16-Sep-42 | Scrapped 1969 |
| 117 | Sun Ship | Chester PA | 205 | Shooting Star | C2-SU-R | 8,595 | 14-Aug-42 | Torpedoed and lost in South Atlantic 1943 |
| 118 | Sun Ship | Chester PA | 206 | Sea Serpent | C2-SU-R | 8,595 | 23-Oct-42 | Scrapped 1970 |
| 124 | Tampa SB | Tampa FL | 37 | Rainbow | C2-T | 8,656 | Apr-41 | To USN 1941 as Rainier (AE 5), scrapped 1971 |
| 125 | Tampa SB | Tampa FL | 38 | Comet | C2-T | 8,656 | Jan-42 | To USN 1942 as Shasta (AE 6), scrapped 1970 |
| 126 | Tampa SB | Tampa FL |