Union Construction
Oakland CA
Union Construction Company was organized in 1918 to build cargo ships for the USSB. The site was between Bataan and Chunking Streets in what is now the Oakland Army Base.
| USSB # | O/N | Name | Customer | Type | GT | Delivered | Notes | |
| 1 | 1461 | 218764 | Hatchie | USSB | freighter | 5,989 | Aug 1919 | scrapped 1930 |
| 2 | 1462 | 218977 | Hathaway | USSB | freighter | 5,991 | Sep 1919 | scrapped 1930 |
| 3 | 1463 | 219539 | City of Berkeley | USSB | freighter | 6,039 | Jan 1920 | scrapped 1930 |
| 4 | 1464 | 219725 | Havilah | USSB | freighter | 6,045 | Mar 1920 | scrapped 1929 |
| 5 | 1465 | 219924 | Hawarden | USSB | freighter | 6,042 | Apr 1920 | scrapped 1930 |
| 6 | 1466 | 220088 | Haxtum | USSB | freighter | 6,041 | May 1920 | scrapped 1930 |
| 7 | 1467 | 220255 | Hayden | USSB | freighter | 6,042 | 2un-20 | scrapped 1930 |
| 8 | 1468 | 220411 | Haymon | USSB | freighter | 6,042 | July 1920 | scrapped 1930 |
| 9 | 1469 | 220502 | Haynie | USSB | freighter | 6,037 | Aug 1920 | scrapped 1929 |
| 10 | 1470 | 220651 | Heber | USSB | freighter | 6,041 | Oct 1920 | scrapped 1929 |
| 11 | 220856 | Charlie Watson | Standard Oil of Cal. | tanker | 1,769 | Nov 1920 | later Zephyr 1940, scrapped 1948 | |
| 12 | 221073 | Liebre | Socony-Vacuum Oil | tanker | 7,057 | Feb 1921 | later Meredosia 1945, Liebre 1946, scrapped 1947 | |
| 14 | 221169 | R. J. Hanna | Standard Oil of Cal. | tanker | 7,095 | Apr 1921 | later Bahrain 1935, scrapped 1953 | |
| 15 | 146054 | Acardo | Anglo-Saxon Pet. Co. | tanker | 5,767 | June 1921 | first Shell tanker not built in Britain, scrapped 1936 | |
| 16 | WPG-48 | Tampa (WPG-48) | USCG | gunboat | 1,955 | 15 Sep 1921 | sold 1947 as Rigil Kent, scrapped 1951 | |
| 17 | WPG-45 | Haida (WPG-45) | USCG | gunboat | 1,955 | 26 Oct 1921 | sold 1948 | |
| 18 | WPG-47 | Mojave (WPG-47) | USCG | gunboat | 1,955 | 12 Dec 1921 | sold 1948 | |
| 19 | WPG-46 | Modoc (WPG-46) | USCG | gunboat | 1,955 | 14 Jan 1922 | sold 1948 as Amelia V, Machala 1950, scrapped 1964 | |
| 20 | WAT-54 | Shawnee (WAT-54) | USCG | tugboat | 900 | 8 Mar 1922 | sold 1947 | |
| 21 | 151432 | Achatina | Anglo-Saxon Pet. Co. | tanker | 5,833 | July 1921 | scrapped 1936 | |
| 22 | 146159 | Ampullaria | Anglo-Saxon Pet. Co. | tanker | 5,857 | Aug 1921 | scrapped 1935 | |
| 23 | 146196 | Amalthus | Anglo-Saxon Pet. Co. | tanker | 5,834 | Sep 1921 | scrapped 1936 | |
| 24 | 174887 | Martinez | Shell Oil Co. | tanker | 1,052 | Jan 1923 | later S.O. Co. No. 15 | |
| 25 | Frank M. Shallue | Western Dredging | dredge | 1923 | completed by Paceco | |||
| 26 | 169098 | C. No. 1 | Claude Cummings | barge | 605 | 1923 | scrapped 1963 |