EX-21.1 4 kex-ex21_1.htm EX-21.1

EXHIBIT 21.1

KIRBY CORPORATION
CONSOLIDATED SUBSIDIARIES OF THE REGISTRANT
AT DECEMBER 31, 2023

| Domicile of Incorporation
KIRBY CORPORATION – PARENT AND REGISTRANT | Nevada
SUBSIDIARIES OF THE PARENT AND REGISTRANT |
Kirby Corporate Services, LLC | Delaware
KIM Holdings, Inc. | Delaware
Kirby Terminals, Inc. | Texas
Sabine Transportation Company | Delaware
AFRAM Carriers, Inc. | Delaware
Kirby Distribution & Services, Inc. | Delaware
Kirby Tankships, Inc. | Delaware
Kirby Ocean Transport Company | Delaware
Kirby Offshore Marine, LLC | Delaware
Adaptive KRM, LLC | Texas
K Equipment, LLC | Texas
The Hollywood Camp, LLC | Texas
CONTROLLED SUBSIDIARIES |
KIM Partners, LLC (Subsidiary of KIM Holdings, Inc.) | Louisiana
Kirby Inland Marine, LP (KIM Holdings, Inc. 1% General Partner, KIM Partners, LLC 99% Limited Partner) | Delaware
Greens Bayou Fleeting, LLC (subsidiary of Kirby Inland Marine, LP) | Texas
Dixie Carriers, Inc. (subsidiary of Kirby Inland Marine, LP) | Texas
Osprey Line, L.L.C. (Kirby Inland Marine, LP 66 2/3%) | Texas
San Jac Marine, LLC (subsidiary of Kirby Inland Marine, LP) | Delaware
Diesel Dash LLC (subsidiary of Kirby Distribution & Services, Inc.) | Delaware
Kirby Engine Systems LLC (subsidiary of Kirby Distribution & Services, Inc.) | Delaware
Marine Systems, Inc. (subsidiary of Kirby Engine Systems LLC) | Louisiana
Engine Systems, Inc. (subsidiary of Kirby Engine Systems LLC) | Delaware
United Holdings LLC (subsidiary of Kirby Distribution & Services, Inc.) | Delaware
United Engines LLC (subsidiary of United Holdings LLC) | Colorado
UE Manufacturing LLC (subsidiary of United Holdings LLC) | Colorado
Thermo King of Houston, LLC (subsidiary of United Holdings LLC) | Texas
Thermo King of Dallas, LLC (subsidiary of United Holdings LLC) | Texas
Thermo King of West Texas, LLC (subsidiary of United Holdings LLC) | Texas
San Antonio Thermo King, Inc. (subsidiary of Thermo King of Houston, LLC) | Texas
Kirby Offshore Marine Operating, LLC (subsidiary of Kirby Offshore Marine, LLC) | Delaware
Kirby Offshore Wind, LLC (subsidiary of Kirby Offshore Marine, LLC) | Delaware
Kirby Offshore Marine Hawaii, LLC (subsidiary of Kirby Offshore Marine Operating, LLC) | Delaware
Kirby Offshore Marine Pacific, LLC (subsidiary of Kirby Offshore Marine Operating, LLC) | Delaware
Kirby Offshore Marine, Inc. (subsidiary of Kirby Offshore Marine Operating, LLC) | Delaware
Inversiones Kara Sea SRL (subsidiary of Kirby Offshore Marine Operating, LLC) | Venezuela
K-Sea Canada Holdings, Inc. (subsidiary of Kirby Offshore Marine, Inc.) | Delaware
Penn Maritime Inc. (subsidiary of Kirby Offshore Marine, LLC) | Delaware
Stewart & Stevenson LLC (subsidiary of Kirby Distribution & Services, Inc.) | Delaware
Stewart & Stevenson Power Products LLC (subsidiary of Stewart & Stevenson LLC) | Delaware
Stewart & Stevenson Canada Inc. (subsidiary of Stewart & Stevenson LLC) | Canada
Stewart & Stevenson de las Americas Colombia Ltda. (Stewart & Stevenson Petroleum Services LLC 1% General Partner, Stewart & Stevenson LLC 99% Limited Partner) | Colombia
Stewart & Stevenson de Venezuela, S.A. (subsidiary of Stewart & Stevenson LLC 99.95%) | Venezuela
Stewart & Stevenson Petroleum Services LLC (subsidiary of Stewart & Stevenson LLC) | Delaware
Stewart & Stevenson Manufacturing Technologies LLC (subsidiary of Stewart & Stevenson LLC) | Delaware
Stewart & Stevenson Acquisition LLC (subsidiary of Stewart & Stevenson LLC) | Delaware
Stewart & Stevenson FDDA LLC (subsidiary of Stewart & Stevenson LLC) | Delaware
Transmissions Y Embragues, S.A. (subsidiary of Stewart & Stevenson de Venezuela, S.A.) | Venezuela
Stewart and Stevenson Healthcare Technologies, LLC (subsidiary of Stewart & Stevenson LLC) | Texas

Higman Marine, Inc. (subsidiary of Kirby Inland Marine, LP) | Delaware
Higman Barge Lines, Inc. (subsidiary of Higman Marine, Inc.) | Delaware
Higman Marine Services, Inc. (subsidiary of Higman Marine, Inc.) | Delaware
Higman Service Corporation (subsidiary of Higman Marine, Inc.) | Delaware
Alamo Barge Lines, LLC (subsidiary of Kirby Inland Marine, LP) | Delaware
Empty Barge Lines, Inc. (subsidiary of Kirby Inland Marine, LP) | Texas
Empty Barge Lines II, Inc. (subsidiary of Kirby Inland Marine, LP) | Texas
Empty Barge Lines III, Inc. (subsidiary of Kirby Inland Marine, LP) | Texas
EBL Marine I LLC (subsidiary of Kirby Inland Marine, LP) | Texas
EBL Marine II LLC (subsidiary of Kirby Inland Marine, LP) | Texas
EBL Marine III LLC (subsidiary of Kirby Inland Marine, LP) | Texas