| HSHorizon Shipbuilding, INC. | Bayou La Batre | AL | — | ◇ UNVERIFIED |
| HCHornblower Cruises and Events | San Pedro | CA | — | ◇ UNVERIFIED |
| HCHornblower Cruises & Events | Alameda | CA | — | ◇ UNVERIFIED |
| HSHornblower Shipyard LLC | Bridgeport | CT | — | ◇ UNVERIFIED |
| HSHouston Ship Repair INC | Orange | TX | — | ◇ UNVERIFIED |
| HBHrp Brownsville LLC | Brownsville | TX | — | ◇ UNVERIFIED |
| HBHrp Brownsville LLC | Brownsville | TX | — | ◇ UNVERIFIED |
| HSHull Scrubber Corporation | Port Angeles | WA | — | ◇ UNVERIFIED |
 Huntington Ingalls Industries | Newport News | VA | — | ◇ UNVERIFIED |
| Huntington- Ingalls Industries/ Amsec | Bremerton | WA | — | ◇ UNVERIFIED |
| Huntington Ingalls Industries - Newport News Shipbuilding | Coronado | CA | — | ◇ UNVERIFIED |
| HIHutco, INC. | Calvert City | KY | — | ◇ UNVERIFIED |
| HTHy Tec Marine Prop, LLC | Silt | CO | — | ◇ UNVERIFIED |
 Hyval Industries Incorporated | Portsmouth | VA | — | ◇ UNVERIFIED |
| HVHy Val Industries, Incorporation | Norfolk | VA | — | ◇ UNVERIFIED |
 Illinois Marine Towing INC | Channahon | IL | — | ◇ UNVERIFIED |
| Illinois Marine Towing INC | Lemont | IL | — | ◇ UNVERIFIED |
| Illinois Marine Towing, INC. (imt) | Lemont | IL | — | ◇ UNVERIFIED |
| III.m.w., INC. | Houston | TX | — | ◇ UNVERIFIED |
| IMInd-mar Machine | Jacksonville | FL | — | ◇ UNVERIFIED |
| IMIndustrial Marine INC | Portland | OR | — | ◇ UNVERIFIED |
| IMIndustrial Marine INC. | Portland | OR | — | ◇ UNVERIFIED |
| ITIndustrial Turnaround & Construction, L.l.c. | Ingleside | TX | — | ◇ UNVERIFIED |
| ISIngalls Shipbuilding | Pascagoula | MS | — | ◇ UNVERIFIED |
| ISIngalls Shipbuilding, Gulfport Operations | Gulfport | MS | — | ◇ UNVERIFIED |
| IIInland Industries | Orange | TX | — | ◇ UNVERIFIED |
| IMIntegrated Marine Services | Terminal Island | CA | — | ◇ UNVERIFIED |
| IMIntegrated Marine Services INC. | San Pedro | CA | — | ◇ UNVERIFIED |
| IIntegrity | Port Arthur | TX | — | ◇ UNVERIFIED |
 International Flooring & Protective Coatings, INC. | Norfolk | VA | — | ◇ UNVERIFIED |
| IMInternational Marine and Industrial Applicators | San Diego | CA | — | ◇ UNVERIFIED |
| IMInternational Marine and Industrial Applicators LLC | Saint Marys | GA | — | ◇ UNVERIFIED |
| IMInternational Marine and Industrial Applicators LLC | Portsmouth | VA | — | ◇ UNVERIFIED |
| IMInternational Marine and Industrial Applicators, LLC | Philadelphia | PA | — | ◇ UNVERIFIED |
| IMInternational Marine and Industrial Applicators, LLC | Portsmouth | VA | — | ◇ UNVERIFIED |
| IMInternational Marine and Industrial Applicators, LLC | Portsmouth | VA | — | ◇ UNVERIFIED |
| IMInternational Marine & Industrial Applicator LLC | Norfolk | VA | — | ◇ UNVERIFIED |
| IMInternational Marine & Industrial Applicators INC | San Diego | CA | — | ◇ UNVERIFIED |
| IMInternational Marine & Industrial Applicators LLC | Jacksonville | FL | — | ◇ UNVERIFIED |
| IMInternational Marine & Industrial Applicators LLC | Bremerton | WA | — | ◇ UNVERIFIED |
| IMInternational Marine & Industrial Applicators, LLC | Honolulu | HI | — | ◇ UNVERIFIED |
| IMInternational Marine & Industrial Applicators, LLC | Honolulu | HI | — | ◇ UNVERIFIED |
| IPInternational Paint LLC | San Diego | CA | — | ◇ UNVERIFIED |
| ISInternational Shipbreakers INC. Uss Wichita | Brownsville | TX | — | ◇ UNVERIFIED |
| ISInternational Shipbreaking | Brownsville | TX | — | ◇ UNVERIFIED |
| IMInt'l Marine & Ind Applicators LLC | San Diego | CA | — | ◇ UNVERIFIED |
| IMIntl Marine & Ind Applicators, LLC | Bremerton | WA | — | ◇ UNVERIFIED |
| ICIntracoastal City Dry Dock | Abbeville | LA | — | ◇ UNVERIFIED |
| IMIreland Marine Transportation, INC. | Chesapeake | VA | — | ◇ UNVERIFIED |
| ISIsland Shipyard, INC. | Green Cove Springs | FL | — | ◇ UNVERIFIED |
| IMIslands Marine Center | Lopez Island | WA | — | ◇ UNVERIFIED |
| JCJabberwocky Composites, Limited Liability Company | Bellingham | WA | — | ◇ UNVERIFIED |
| JCJack's Cleaners & Shirt Laundr | Hayward | CA | — | ◇ UNVERIFIED |
| JSJacksonville Shipyards INC. | Jacksonville | FL | — | ◇ UNVERIFIED |
| JAJag Alaska Sockeye Point | Seward | AK | — | ◇ UNVERIFIED |
| JBJames Built | Calvert City | KY | — | ◇ UNVERIFIED |
 James Marine, INC. | Paducah | KY | — | ◇ UNVERIFIED |
| James Marine INC. - Walker Boat Yard | Paducah | KY | — | ◇ UNVERIFIED |
| James Marine INC - Wickliffe | Wickliffe | KY | — | ◇ UNVERIFIED |
| JCJ Calman Industries | Lynden | WA | — | ◇ UNVERIFIED |
| JSJC STEEL WORK & BOAT REPAIR CORP | Bronx | NY | — | ◇ UNVERIFIED |
| JMJ.e. Mcamis | Astoria | OR | — | ◇ UNVERIFIED |
| JIJermunfran, INC. | Norfolk | VA | — | ◇ UNVERIFIED |
| JIJermunfran, INC. | Norfolk | VA | — | ◇ UNVERIFIED |
| JHJ & H Boatworks | Astoria | OR | — | ◇ UNVERIFIED |
| JLJ & L Boatworks Inc. | Riviera Beach | FL | — | ◇ UNVERIFIED |
| JMJm Martinac Shipbuilding CORP | Tacoma | WA | — | ◇ UNVERIFIED |
| JOJ O Brown & Son | North Haven | ME | — | ◇ UNVERIFIED |
| JRJoe Rupcke | Calvert City | KY | — | ◇ UNVERIFIED |
 John Bludworth Shipyard LLC | Corpus Christi | TX | — | ◇ UNVERIFIED |
| JRJ R Gazzier LLC | Bayou La Batre | AL | — | ◇ UNVERIFIED |
| JSJ S Parsons & CO | Saint Louis | MO | — | ◇ UNVERIFIED |
| JMJt Marine INC | Vancouver | WA | — | ◇ UNVERIFIED |
| KCKarma Coating | Seattle | WA | — | ◇ UNVERIFIED |
| KSKaskaskia Shipbuilding, INC. | Red Bud | IL | — | ◇ UNVERIFIED |
| KKKeefe Kaplan Maritime INC | Richmond | CA | — | ◇ UNVERIFIED |
| KCKelmar Contracting CORP | Brooklyn | NY | — | ◇ UNVERIFIED |
| KAKeppel Amfels, L.l.c. | Brownsville | TX | — | ◇ UNVERIFIED |
| KSKerney Service Group INC. | Norfolk | VA | — | ◇ UNVERIFIED |
| KSKing Street Boat Storage INC | Cohasset | MA | — | ◇ UNVERIFIED |
| KSKkmi Sausalito LLC | Sausalito | CA | — | ◇ UNVERIFIED |
| KMKoontz Machine Inc | Coos Bay | OR | — | ◇ UNVERIFIED |
| KKrt-inc | Chesapeake | VA | — | ◇ UNVERIFIED |
| KKrt-llc | Chesapeake | VA | — | ◇ UNVERIFIED |
 Ksaria Service Corporation | San Diego | CA | — | ◇ UNVERIFIED |
| LCL3 Communications - Pacord | Mayport | FL | — | ◇ UNVERIFIED |
| LCL3 Communications Pacord | Portsmouth | VA | — | ◇ UNVERIFIED |
 L3harris Maritime Services, INC. | Chula Vista | CA | — | ◇ UNVERIFIED |
| L3harris Maritime Services INC - Princess Anne | Norfolk | VA | — | ◇ UNVERIFIED |
| LTL3 Technologies, INC. | National City | CA | — | ◇ UNVERIFIED |
| LUL-3 Unidyne, INC. | Norfolk | VA | — | ◇ UNVERIFIED |
| LWLabor Works | Vancouver | WA | — | ◇ UNVERIFIED |
| LGLa Gasification Facility I LLC - La Gasi | New Orleans | LA | — | ◇ UNVERIFIED |
| LCLake Champlain Transportation Company (burlington) | Burlington | VT | — | ◇ UNVERIFIED |
| LCLake Charles Fractionator | Sulphur | LA | — | ◇ UNVERIFIED |
| LLLake Lite, INC. | Fort Wayne | IN | — | ◇ UNVERIFIED |
| LMLake Michigan Boat Basin & Stormwater System | Indiantown | FL | — | ◇ UNVERIFIED |
| LRLakeshore Railcar Services LLC | East Chicago | IN | — | ◇ UNVERIFIED |
| LALalizas / Alexander LLC Louisiana | Houma | LA | — | ◇ UNVERIFIED |
| LBLandry Boat Works, INC. | Bayou La Batre | AL | — | ◇ UNVERIFIED |
