UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
Notice of Effectiveness
Effectiveness Date:	April 30, 2007

Accession Number:	0001104659-07-028889
Submission Type:	POS AM
CIK: 0001372020 Company Name: Great Lakes Dredge & Dock CORP File Number: 333-136861-01