United Boat Service was essentially a yacht repair and maintenance facility that was drafted into boatbuilding for the war. If anyone can provide any additional information about this yard and the boats it built, please e-mail me at tim@coltoncompany.com
| Hull # | Original Name | Original Owner | Type | Feet | Delivery | Disposition |
| BTL 810 | U.S. Army | Barge, Tank, Landing | 50 | 3/43-4/43 | Later C 24515 | |
| BTL 811 | U.S. Army | Barge, Tank, Landing | 50 | 3/43-4/43 | Later C 24516 | |
| BTL 812 | U.S. Army | Barge, Tank, Landing | 50 | 3/43-4/43 | Later C 24517 | |
| BTL 813 | U.S. Army | Barge, Tank, Landing | 50 | 3/43-4/43 | Later C 24518 | |
| BTL 814 | U.S. Army | Barge, Tank, Landing | 50 | 3/43-4/43 | Later C 24519 | |
| BTL 815 | U.S. Army | Barge, Tank, Landing | 50 | 3/43-4/43 | Later C 24520 | |
| BTL 816 | U.S. Army | Barge, Tank, Landing | 50 | 3/43-4/43 | Later C 24521 | |
| BTL 817 | U.S. Army | Barge, Tank, Landing | 50 | 3/43-4/43 | Later C 24522 | |
| BTL 818 | U.S. Army | Barge, Tank, Landing | 50 | 3/43-4/43 | Later C 24523 | |
| BTL 819 | U.S. Army | Barge, Tank, Landing | 50 | 3/43-4/43 | Later C 24524 | |
| BTL 820 | U.S. Army | Barge, Tank, Landing | 50 | 3/43-4/43 | Later C 24525 | |
| BTL 821 | U.S. Army | Barge, Tank, Landing | 50 | 3/43-4/43 | Later C 24526 | |
| BTL 822 | U.S. Army | Barge, Tank, Landing | 50 | 3/43-4/43 | Later C 24527 | |
| BTL 823 | U.S. Army | Barge, Tank, Landing | 50 | 3/43-4/43 | Later C 24528 | |
| BTL 824 | U.S. Army | Barge, Tank, Landing | 50 | 3/43-4/43 | Later C 24529 | |
| BTL 825 | U.S. Army | Barge, Tank, Landing | 50 | 3/43-4/43 | Later C 24530 | |
| BTL 826 | U.S. Army | Barge, Tank, Landing | 50 | 3/43-4/43 | Later C 24531 | |
| BTL 827 | U.S. Army | Barge, Tank, Landing | 50 | 3/43-4/43 | Later C 24532 | |
| BTL 828 | U.S. Army | Barge, Tank, Landing | 50 | 3/43-4/43 | Later C 24533 | |
| BTL 829 | U.S. Army | Barge, Tank, Landing | 50 | 3/43-4/43 | Later C 24534 | |
| BTL 830 | U.S. Army | Barge, Tank, Landing | 50 | 3/43-4/43 | Later C 24535 | |
| BTL 831 | U.S. Army | Barge, Tank, Landing | 50 | 3/43-4/43 | Later C 24536 | |
| BTL 832 | U.S. Army | Barge, Tank, Landing | 50 | 3/43-4/43 | Later C 24537 | |
| BTL 833 | U.S. Army | Barge, Tank, Landing | 50 | 3/43-4/43 | Later C 24538 | |
| BTL 834 | U.S. Army | Barge, Tank, Landing | 50 | 3/43-4/43 | Later C 24539 | |
| ST 333 | U.S. Army | Small Tug | 74 | 11/43-3/44 | ||
| ST 334 | U.S. Army | Small Tug | 74 | 11/43-3/44 | ||
| ST 335 | U.S. Army | Small Tug | 74 | 11/43-3/44 | To Finland 1946 as minesweeper (DR-18), sold as tug Alpo 1952, still active, see her here | |
| ST 336 | U.S. Army | Small Tug | 74 | 11/43-3/44 | ||
| ST 337 | U.S. Army | Small Tug | 74 | 11/43-3/44 | ||
| ST 338 | U.S. Army | Small Tug | 74 | 11/43-3/44 | Lost during WWII | |
| ST 339 | U.S. Army | Small Tug | 74 | 11/43-3/44 | ||
| ST 340 | U.S. Army | Small Tug | 74 | 11/43-3/44 | ||
| ST 508 | U.S. Army | Small Tug | 86 | 5/44-11/44 | ||
| ST 509 | U.S. Army | Small Tug | 86 | 5/44-11/44 | ||
| ST 510 | U.S. Army | Small Tug | 86 | 5/44-11/44 | ||
| ST 511 | U.S. Army | Small Tug |