Exhibit 21.1

LIST OF SUBSIDIARIES

Name of Subsidiary	Jurisdiction of Formation	Effective Ownership
Orion Administrative Services, Inc.	Texas	Orion Marine Group, Inc. — 100%
OCLP, LLC	Nevada	Orion Marine Group, Inc. — 100%
OCGP, LLC	Texas	OCLP, LLC — 100%
Orion Construction LP	Texas	OCLP, LLC — 99%
		OCGP, LLC — 1%
Misener Marine Construction, Inc.	Florida	Orion Construction LP — 100%
KFMSLP, LLC	Nevada	Orion Construction LP — 100%
KFMSGP, LLC	Texas	KFMSLP, LLC — 100%
King Fisher Marine Service LP	Texas	KFMSLP, LLC — 99%
		KFMSGP, LLC — 1%
F. Miller Construction, LLC	Louisiana	Orion Marine Group, Inc. — 100%