| TSP TANKERS I LLCDania Beach, FL · Active | Dania Beach, FL | LLC | Aug 18, 2025 | Active |
| TSP TANKERS II LLCDania Beach, FL · Active | Dania Beach, FL | LLC | Aug 18, 2025 | Active |
| TSP TANKERS III LLCDania Beach, FL · Active | Dania Beach, FL | LLC | Aug 18, 2025 | Active |
| SEACOR GLOBAL SERVICES LLCDania Beach, FL · Active | Dania Beach, FL | LLC | Jul 28, 2025 | Active |
| US OCEAN FLEET MANAGEMENT LLCTampa, FL · Active | Tampa, FL | LLC | Jun 11, 2025 | Active |
| TSP TANKERS HOLDINGS LLCDania Beach, FL · Active | Dania Beach, FL | LLC | Dec 26, 2024 | Active |
| FAIRWATER HOLDINGS LLCDania Beach, FL · Active | Dania Beach, FL | LLC | Sep 13, 2023 | Active |
| SEACOR MERIDIAN INC.Miami, FL · Active | Miami, FL | Corporation | Apr 26, 2023 | Active |
| SEABULK LOGISTICS SERVICES LLCDania Beach, FL · Active | Dania Beach, FL | LLC | Mar 17, 2020 | Active |
| WATERMAN STEAMSHIP CORPORATIONDania Beach, FL · Active | Dania Beach, FL | Corporation | Nov 15, 2017 | Active |
| WATERMAN TRANSPORT, INC.Dania Beach, FL · Active | Dania Beach, FL | Corporation | Nov 15, 2017 | Active |
| SEACOR PAYROLL MANAGEMENT LLCMiami, FL · Active | Miami, FL | LLC | Dec 10, 2004 | Active |
| SEACOR 3.0 LLCMiami, FL · Active | Miami, FL | LLC | May 29, 2025 | Active |
| MARISTAR LLCMiami, FL · Active | Miami, FL | LLC | May 28, 2025 | Active |
| SEABULK ENERGY CARRIERS, INC.Fort Lauderdale, FL · Inactive | Fort Lauderdale, FL | Corporation | Dec 4, 1974 | Inactive |
| SEABULK TANKERS, INC.Fort Lauderdale, FL · Inactive | Fort Lauderdale, FL | Corporation | May 1, 2001 | Inactive |
| LARKSPUR PROPERTIES LLCMiami, FL · Inactive | Miami, FL | LLC | Mar 25, 2009 | Inactive |
| LARKSPUR EAGLE HARBOR, LLCMiami, FL · Inactive | Miami, FL | LLC | Dec 13, 2010 | Inactive |
| C-TERMS PARTNERS LLCMiami, FL · Active | Miami, FL | LLC | Oct 20, 2023 | Active |
| SEABULK AMERICA LLCFort Lauderdale, FL · Inactive | Fort Lauderdale, FL | LLC | Apr 8, 2010 | Inactive |
| PORT DANIA HOLDINGS I LLCFort Lauderdale, FL · Inactive | Fort Lauderdale, FL | LLC | May 14, 2012 | Inactive |
| PORT DANIA HOLDINGS II LLCFort Lauderdale, FL · Inactive | Fort Lauderdale, FL | LLC | May 14, 2012 | Inactive |
| SCF BOATS LLCLocation not reported, FL · Inactive | Location not reported, FL | LLC | Apr 6, 2016 | Inactive |
| US OCEAN PAYROLL MANAGEMENT LLCLocation not reported, FL · Active | Location not reported, FL | LLC | Jul 15, 2025 | Active |
| LIGHTSHIP TANKERS I LLCFort Lauderdale, FL · Inactive | Fort Lauderdale, FL | LLC | Mar 12, 1996 | Inactive |
| LIGHTSHIP TANKER HOLDINGS, LLCFort Lauderdale, FL · Inactive | Fort Lauderdale, FL | LLC | Sep 29, 1998 | Inactive |
| SEABULK ENERGY TRANSPORT, INC.Fort Lauderdale, FL · Inactive | Fort Lauderdale, FL | Corporation | Jan 14, 2004 | Inactive |
| SEABULK OCEAN TRANSPORT, INC.Fort Lauderdale, FL · Inactive | Fort Lauderdale, FL | Corporation | Jan 14, 2004 | Inactive |
| SEABULK PETROLEUM TRANSPORT, INC.Fort Lauderdale, FL · Inactive | Fort Lauderdale, FL | Corporation | Jan 16, 2004 | Inactive |
| SEABULK MARINE SERVICES, INC.Miami, FL · Inactive | Miami, FL | Corporation | Aug 4, 1994 | Inactive |
| SEABULK TOWING SERVICES, INC.Fort Lauderdale, FL · Inactive | Fort Lauderdale, FL | Corporation | Feb 27, 1998 | Inactive |
| LONE STAR MARINE SERVICES, INC.Fort Lauderdale, FL · Inactive | Fort Lauderdale, FL | Corporation | Mar 9, 1998 | Inactive |