Exhibit 12.1

Ratio of Earnings to Fixed Charges

Great Lakes Dredge & Dock Corporation

(dollars in thousands)

	2010			2011		2012		2013			2014
Pretax income (loss) from continuing operations(1)	$	57,138		$	26,679	$	11,590	$	29,109		$	6,293
Fixed charges		21,046			28,795		27,594		28,556			27,766
Capitalized Interest		(34	)		—		—		(522	)		(1,401	)
Distributed income of equity investees		—			—		—		—
	$	78,150		$	55,474	$	39,184	$	57,143		$	32,658
Fixed charges:
Interest expense and amortized deferred financing costs	$	13,559		$	21,374	$	20,920	$	21,941		$	19,967
Estimated interest expense in operating leases		7,487			7,421		6,674		6,615			7,799
Preference security dividend requirements		—			—
Total fixed charges	$	21,046		$	28,795	$	27,594	$	28,556		$	27,766
Ratio of earnings to fixed charges		3.7			1.9		1.4		2.0			1.2

(1) Before adjustment for noncontrolling interests in consolidated subsidiaries and income (loss) from equity investees.