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%
Orion Dredging Services, LLC	Florida	Orion Marine Group, Inc.	100%
SSL South, LLC	Florida	Orion Dredging Service, LLC	100%
Northwest Marine Construction, Inc.	Delaware	Orion Marine Group, Inc.	100%
ACC North Equipment, ULC	Canada	Northwest Marine Construction, Inc.	100%
Seagull Services, LLC	Delaware	Orion Marine Group, Inc.	100%
T.W. LaQuay Dredging, LLC	Texas	Seagull Services, LLC	100%