Averell Harriman and his partners in American Ship & Commerce Corporation considered that the main Merchant Shipbuilding yard in Chester PA was not well suited to mass production and built a ship factory in Bristol that was similar to the Hog Island and Submarine shipyards. The yard was located on Radcliffe Street, at Bristol Street: the General Stores and Mold Loft building is still there. See the site, which appears to be a marina now, from the air on Google here.
| Yard # | USSB # | Original Name | Original Owner | Type | GT | Delivery | Disposition |
| 1 | 597 | Cabegon | U.S. Shipping Board | Cargo Ship | 5,500 | Mar-19 | Scrapped 1931 |
| 2 | 598 | Wathena | U.S. Shipping Board | Cargo Ship | 5,500 | Feb-19 | To USN as SP 3884, scrapped 1937 |
| 3 | 599 | Watonwan | U.S. Shipping Board | Cargo Ship | 5,500 | Feb-19 | To USN as SP 3872, scrapped 1930 |
| 4 | 600 | Waubesa | U.S. Shipping Board | Cargo Ship | 5,500 | Feb-19 | Scrapped 1931 |
| 5 | 601 | Wauconda | U.S. Shipping Board | Cargo Ship | 5,500 | Apr-19 | Scrapped 1933 |
| 6 | 602 | Waukau | U.S. Shipping Board | Cargo Ship | 5,500 | May-19 | Later Alcoa Voyager 1940, Reconquista 1947, scrapped 1961 |
| 7 | 603 | Waxahatchie | U.S. Shipping Board | Cargo Ship | 5,500 | Jun-19 | Scrapped 1933 |
| 8 | 604 | Waxhaw | U.S. Shipping Board | Cargo Ship | 5,500 | Sep-19 | Later Mercer Victory 1919, Alcoa Rambler 1941, torpedoed and lost 1942 |
| 9 | 605 | Winyah | U.S. Shipping Board | Cargo Ship | 5,500 | Jul-19 | Scrapped 1931 |
| 10 | 606 | Wonewoc | U.S. Shipping Board | Cargo Ship | 5,500 | Jul-19 | Later Neshaminy 1919, scrapped 1930 |
| 11 | 607 | Intan | U.S. Shipping Board | Cargo Ship | 5,500 | Jun-19 | Scrapped 1931 |
| 12 | 608 | Wynooche | U.S. Shipping Board | Cargo Ship | 5,500 | Apr-19 | Scrapped 1930 |
| 13 | 609 | Deneson | U.S. Shipping Board | Cargo Ship | 5,500 | Jul-19 | Later Costigan 1919, scrapped 1933 |
| 14 | 610 | Benecus | U.S. Shipping Board | Cargo Ship | 5,500 | Aug-19 | Later Kittegaun 1919, scrapped 1938 |
| 15 | 611 | Bonnie Brook | U.S. Shipping Board | Cargo Ship | 5,500 | Sep-19 | Later Epitacio Pessoa, scrapped 1938 |
| 16 | 612 | Auditor | U.S. Shipping Board | Cargo Ship | 5,500 | Oct-19 | Converted to barge 1932, scrapped 1951 |
| 17 | 613 | Bensalem | U.S. Shipping Board | Cargo Ship | 5,500 | Nov-19 | Later Alcoa Carrier 1941, torpedoed and lost 1942 |
| 18 | 614 | Lycoming | U.S. Shipping Board | Cargo Ship | 5,500 | Nov-19 | Scrapped 1931 |
| 19 | 615 | Denango | U.S. Shipping Board | Cargo Ship | 5,500 | Dec-19 | Later Kayseeka 1919, scrapped 1931 |
| 20 | 616 | Orysa | U.S. Shipping Board | Cargo Ship | 5,500 | Dec-19 | Later Bavington 1919, scrapped 1930 |
| 21 | 617 | Bavington | U.S. Shipping Board | Cargo Ship | 5,500 | Jan-20 | Later Mitchell 1920, scrapped 1938 |
| 22 | 618 | Zehna | U.S. Shipping Board | Cargo Ship | 5,500 | Mar-20 | Later City of Alma 1920, torpedoed and lost 1943 |
| 23 | 619 | Avenis | U.S. Shipping Board | Cargo Ship | 5,500 | Mar-20 | Later Delanson 1920, Exilona 1925, Sea Thrush 1937, torpedoed and lost 1942 |
| 24 | 620 | Delanson | U.S. Shipping Board | Cargo Ship | 5,500 | Mar-20 | Later Davenport 1920, Alcoa Shipper 1940, torpedoed and lost 1942 |
| 25 | 621 | Assonet | U.S. Shipping Board | Cargo Ship | 5,500 | May-20 | Later Evergreen City 1920, hulked 1934 |
| 26 | 622 | Asnebanskit | U.S. Shipping Board | Cargo Ship | 5,500 | Jun-20 | Later Waterbury 1920, torpedoed and lost 1942 |
| 27 | 623 | Arizpa | U.S. Shipping Board | Cargo Ship | 5,500 | Apr-20 | Scrapped 1948 |
| 28 | 624 | Aranca | U.S. Shipping Board | Cargo Ship | 5,500 | Jul-20 | Later Salaam 1920, Andrew Jackson 1940, torpedoed and lost 1942 |
| 29 | 625 | Algic | U.S. Shipping Board | Cargo Ship | 5,500 | Aug-20 | Later Mogotes 1947, Antartida 1958, scrapped 1960 |
| 30 | 626 | Vaba | U.S. Shipping Board | Cargo Ship | 5,500 | Sep-20 | Later Gateway City 1920, scrapped 1946 |
| 31 | 627 | Yaka | U.S. Shipping Board | Cargo Ship | 5,500 | Sep-20 | Torpedoed and lost 1942 |
| 32 | 628 | Yakuskin | U.S. Shipping Board | Cargo Ship | 5,500 | Oct-20 | Later Bonnie Brook 1920, scrapped 1938 |
| 33 | 629 | Yapalaga | U.S. Shipping Board | Cargo Ship | 5,500 | Oct-20 | Later Beauregard 1940, Mendelev 1945, scrapped 1970 |
| 34 | 630 | Yalza | U.S. Shipping Board | Cargo Ship | 5,500 | Nov-20 | Scrapped 1938 |
| 35 | 631 | Wahcona | U.S. Shipping Board | Cargo Ship | 5,500 | Dec-20 | Later Emergency Aid 1920, West Portal 1939, torpedoed and lost 1943 |
| 36 | 632 | Wacosta | U.S. Shipping Board | Cargo Ship | 5,500 | Dec-20 | Torpedoed and lost 1942 |
| 37 | 633 | Nacata | U.S. Shipping Board | Cargo Ship | 5,500 | Jan-21 | Hulked 1934 |
| 38 | 634 | Naamhok | U.S. Shipping Board | Cargo Ship | 5,500 | Jan-21 | Later Exarch 1938, Bienville 1937, bombed and lost 1942 |
| 39 | 635 | Priapus | U.S. Shipping Board | Cargo Ship | 5,500 | Feb-21 | Later Ala 1921, Black Condor 1935, Empire Lapwing 1941, Belgian Fighter 1942, torpedoed and lost 1942 |
| 40 | 636 | Nautukka | U.S. Shipping Board | Cargo Ship | 5,500 | Feb-21 | Later Arden 1921, scrapped 1938 |