| GREENSWEEP OPS, INC.Monticello, FL · Active | Monticello, FL | Corporation | Feb 28, 2008 | Active |
| GRIFFITHS -R E- SHIPPING CORPORATIONMiami, FL · Inactive | Miami, FL | Corporation | Aug 1, 1966 | Inactive |
| GRIFFITHS SHIPPING CORPMiami, FL · Inactive | Miami, FL | Corporation | Jun 20, 1968 | Inactive |
| SOUTH ATLANTIC BARGE LINES INCMiami, FL · Inactive | Miami, FL | Corporation | Sep 9, 1968 | Inactive |
| ATLANTIC AND CARIBBEAN BARGE LINES, INC.Location not reported, FL · Inactive | Location not reported, FL | Corporation | Nov 23, 1970 | Inactive |
| JIM'S BRAKE ALIGNMENT INC.Tallahassee, FL · Inactive | Tallahassee, FL | Corporation | Jan 13, 1978 | Inactive |
| ALL SEAS INCORPORATEDSouth Miami, FL · Inactive | South Miami, FL | Corporation | Aug 21, 1978 | Inactive |
| GRIFFITHS TRUCKING, INC.South Miami, FL · Inactive | South Miami, FL | Corporation | Nov 19, 1979 | Inactive |
| FLO-TRIN LINES, INC.South Miami, FL · Inactive | South Miami, FL | Corporation | Sep 11, 1980 | Inactive |
| GRIFFITHS SHIPPING INC.South Miami, FL · Inactive | South Miami, FL | Corporation | Oct 6, 1980 | Inactive |
| GRIFFITHS SOUTH CONSTRUCTION, INC.Location not reported, FL · Inactive | Location not reported, FL | Corporation | Oct 21, 2011 | Inactive |
| GATEWAY RIVER TERMINAL, INC.Miami, FL · Inactive | Miami, FL | Corporation | Aug 26, 1982 | Inactive |
| CARIBWAY LINES, INCORPORATEDMiami, FL · Inactive | Miami, FL | Corporation | Mar 2, 1983 | Inactive |
| INTERNATIONAL MARITIME OPERATIONS, INC.Coral Gables, FL · Inactive | Coral Gables, FL | Corporation | Sep 20, 1983 | Inactive |
| MIA-CARIB LINES INC.Miami, FL · Inactive | Miami, FL | Corporation | Jan 13, 1984 | Inactive |
| OCEAN EXPRESS LINES, INC.Miami, FL · Inactive | Miami, FL | Corporation | Nov 7, 1988 | Inactive |
| R.E. GRIFFITHS & CO, INC.Miami, FL · Inactive | Miami, FL | Corporation | Dec 7, 1988 | Inactive |
| SOUTHERN OPERATIONS, INC.Coral Gables, FL · Inactive | Coral Gables, FL | Corporation | May 3, 1985 | Inactive |
| IMPERIAL LINES CORPORATIONMiami, FL · Inactive | Miami, FL | Corporation | Mar 3, 1988 | Inactive |
| OPERATION GREENSWEEP INC.Tallahassee, FL · Inactive | Tallahassee, FL | Corporation | Aug 25, 2000 | Inactive |
| GRIFFITHS LINE, INC.Miami, FL · Inactive | Miami, FL | Corporation | Sep 8, 1993 | Inactive |
| ALL SEAS NAVIGATION, INC.Miami, FL · Inactive | Miami, FL | Corporation | Oct 21, 1994 | Inactive |
| PROSIDON SHIPPING, INC.Miami, FL · Inactive | Miami, FL | Corporation | Nov 6, 1995 | Inactive |
| SEA BRIDGE SHIPPING, INC.Miami, FL · Inactive | Miami, FL | Corporation | Jul 17, 1996 | Inactive |
| CARIB EXPRESS LINES, INC.South Miami, FL · Inactive | South Miami, FL | Corporation | Jul 7, 1998 | Inactive |
| U.S. CREDIT & SHIPPING, CORP.Miami, FL · Inactive | Miami, FL | Corporation | Mar 5, 1999 | Inactive |