| MARINE TOWING MARITIME TRAINING CENTER, LLCTampa, FL · Active | Tampa, FL | LLC | May 11, 2018 | Active |
| 22ND STREET PROPERTIES, LLCTampa, FL · Active | Tampa, FL | LLC | Jul 27, 2012 | Active |
| TAMPA TUGS THREE LLCTampa, FL · Active | Tampa, FL | LLC | Feb 2, 2006 | Active |
| 20TH STREET PROPERTIES, LLCTampa, FL · Active | Tampa, FL | LLC | Jan 26, 2005 | Active |
| TAMPA TUGS TWO LLCTampa, FL · Active | Tampa, FL | LLC | May 13, 2003 | Active |
| MARINE TOWING FLORIDA LLCTampa, FL · Active | Tampa, FL | LLC | Jan 3, 2003 | Active |
| MARINE TOWING OF TAMPA LLCTampa, FL · Active | Tampa, FL | LLC | Dec 12, 2002 | Active |
| TAMPA TUGS LLCTampa, FL · Active | Tampa, FL | LLC | Dec 12, 2002 | Active |
| BAY TRANSPORTATION LLCTampa, FL · Active | Tampa, FL | LLC | Oct 30, 2002 | Active |
| CONTINENTAL TOWING CORP.Tampa, FL · Inactive | Tampa, FL | Corporation | Oct 22, 1973 | Inactive |
| CENTRAL FLORIDA PHOSPHATE, INCORPORATEDTampa, FL · Inactive | Tampa, FL | Corporation | Oct 23, 1975 | Inactive |
| AGGREGATE MINING CORPORATIONTampa, FL · Inactive | Tampa, FL | Corporation | Jul 6, 1977 | Inactive |
| HILLSBOROUGH SERVICE, INC.Tampa, FL · Inactive | Tampa, FL | Corporation | Sep 28, 1977 | Inactive |
| POLK SERVICE, INC.Tampa, FL · Inactive | Tampa, FL | Corporation | May 24, 1978 | Inactive |
| FUCHASE, INC.Tampa, FL · Inactive | Tampa, FL | Corporation | Nov 26, 1979 | Inactive |
| FLORIDA ERECTORS, INC.Tampa, FL · Inactive | Tampa, FL | Corporation | May 21, 1980 | Inactive |
| ST. PHILIP TOWING OF TAMPA, INC.Tampa, FL · Inactive | Tampa, FL | Corporation | Mar 16, 1982 | Inactive |
| EAST TAMPA DEVELOPMENT CO.Tampa, FL · Inactive | Tampa, FL | Corporation | Feb 22, 1983 | Inactive |
| BAY TOWING COMPANYTampa, FL · Inactive | Tampa, FL | Corporation | Jul 20, 1983 | Inactive |
| MARINE INLAND TRANSPORTATION COMPANYBrandon, FL · Inactive | Brandon, FL | Corporation | Dec 14, 1988 | Inactive |
| SOUTH FLORIDA TUGS LLCTampa, FL · Inactive | Tampa, FL | LLC | Feb 7, 2003 | Inactive |
| FLORIDA ENERGY SUPPORT GROUP, LLCTampa, FL · Inactive | Tampa, FL | LLC | Jun 22, 2008 | Inactive |
| YOUNG ONE, INC.Brandon, FL · Inactive | Brandon, FL | Corporation | Dec 23, 1991 | Inactive |