| TSThe Shop | Tallahassee | FL | — | ◇ UNVERIFIED |
| TWThe Wood-chuck Workshop, INC. | Fort Lauderdale | FL | — | ◇ UNVERIFIED |
| TMThoma-sea Marine Constructors LLC - Houma Facility | Houma | LA | — | ◇ UNVERIFIED |
| TMThree Mile Drydock and Repair LLC | Mobile | AL | — | ◇ UNVERIFIED |
| TRThree Rivers Boat & Barge INC | Ledbetter | KY | — | ◇ UNVERIFIED |
 Thunderbolt Marine in | Savannah | GA | — | ◇ UNVERIFIED |
| TITidewater Industrial Center | Vancouver | WA | — | ◇ UNVERIFIED |
| TSTidewater Staffing, INC. | Norfolk | VA | — | ◇ UNVERIFIED |
| TSTidewater Staffing, INC. | Norfolk | VA | — | ◇ UNVERIFIED |
| TPTiger Properties Group, LLC | Stuart | FL | — | ◇ UNVERIFIED |
| TNTom Newhall Boat Repair | Stockton | CA | — | ◇ UNVERIFIED |
| TMTracker Marine Bolivar | Bolivar | MO | — | ◇ UNVERIFIED |
| TITradesman Intl INC | San Diego | CA | — | ◇ UNVERIFIED |
| TITreasure Island Development Authority | San Francisco | CA | — | ◇ UNVERIFIED |
| TMTreasure Marine Corporation | Riviera Beach | FL | — | ◇ UNVERIFIED |
| TPTres Palacios Marine, L.p. | Palacios | TX | — | ◇ UNVERIFIED |
| TSTriple S Welding & Marine | Henderson | KY | — | ◇ UNVERIFIED |
| TBT.t. Barge Services Mile 237, LLC | Port Allen | LA | — | ◇ UNVERIFIED |
| TBTt Barge Svcs Mi 237 | Port Allen | LA | — | ◇ UNVERIFIED |
| TTT T Coatings LLC | Westwego | LA | — | ◇ UNVERIFIED |
| TKTurn Key Solutions | San Diego | CA | — | ◇ UNVERIFIED |
| TFTynes Fiberglass CO. INC | Virginia Beach | VA | — | ◇ UNVERIFIED |
| UPUhp Projects, INC. | Norfolk | VA | — | ◇ UNVERIFIED |
| UDUnion Dry Dock & Repair CO | Hoboken | NJ | — | ◇ UNVERIFIED |
| UMUnited Marine Shipbuilding | Seattle | WA | — | ◇ UNVERIFIED |
| UMUniversal Marine Center INC | Fort Lauderdale | FL | — | ◇ UNVERIFIED |
| UMUpgrade Marine | San Diego | CA | — | ◇ UNVERIFIED |
| UHUsace Hopper Dredge Yaquina | Alameda | CA | — | ◇ UNVERIFIED |
| UAUS Army Coe - Portland Moorings | Portland | OR | — | ◇ UNVERIFIED |
| UAU.s. Army Corps of Engineers - Ensley Engineer Yard | Memphis | TN | — | ◇ UNVERIFIED |
| UAUS Army Wsmc Pier 23 | Tacoma | WA | — | ◇ UNVERIFIED |
| UCUscg Campbel | Brooklyn | NY | — | ◇ UNVERIFIED |
| UCU.s. Coast Guard | Ketchikan | AK | — | ◇ UNVERIFIED |
| UCU.s. Coast Guard Base Galveston | Galveston | TX | — | ◇ UNVERIFIED |
| UCU.s. Coast Guard Sector Mobile | Mobile | AL | — | ◇ UNVERIFIED |
| UCU.s. Coast Guard South Portland Base | South Portland | ME | — | ◇ UNVERIFIED |
| USU S Coast Guard Yard | Baltimore | MD | — | ◇ UNVERIFIED |
| UCU.s. Coatings, INC. | North Charleston | SC | — | ◇ UNVERIFIED |
| UDU.s. Department of Labor-osha | Red Bud | IL | — | ◇ UNVERIFIED |
| UDUS Department of Labor-osha | New Johnsonville | TN | — | ◇ UNVERIFIED |
| UDU.s. Department of the Navy | Kings Bay | GA | — | ◇ UNVERIFIED |
| UDUS Department of the Navy Kings Bay Swflant | Kings Bay | GA | — | ◇ UNVERIFIED |
| UOUsdol Osha - Cincinnati Area Office | South Point | OH | — | ◇ UNVERIFIED |
| UOUsdol Osha - (mobile) | Theodore | AL | — | ◇ UNVERIFIED |
| UOUsdol Osha - (mobile) | Bayou La Batre | AL | — | ◇ UNVERIFIED |
| UTUsdol Tongue Point Job Corps Center | Astoria | OR | — | ◇ UNVERIFIED |
| UFUS Fab | Portland | OR | — | ◇ UNVERIFIED |
| UIUs, Incorporated | Chickasaw | AL | — | ◇ UNVERIFIED |
| UJU.s. Joiner | Bellingham | WA | — | ◇ UNVERIFIED |
| UJUS Joiner | San Diego | CA | — | ◇ UNVERIFIED |
