UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
Notice of Effectiveness
Effectiveness Date:
August 4, 2011 5:00 P.M.
Form:
S-4
CIK:
0001372020
Company Name:
Great Lakes Dredge & Dock CORP
File Number:
333-175699
CIK:
0001526363
Company Name:
Great Lakes Dredge & Dock Company, LLC
File Number:
333-175699-06
CIK:
0001526375
Company Name:
NASDI Holdings Corp
File Number:
333-175699-05
CIK:
0001526373
Company Name:
NASDI, LLC
File Number:
333-175699-04
CIK:
0001070599
Company Name:
FIFTY THREE DREDGING CORP
File Number:
333-175699-03
CIK:
0001140031
Company Name:
GREAT LAKES CARIBBEAN DREDGING INC
File Number:
333-175699-02
CIK:
0001070597
Company Name:
DAWSON MARINE SERVICES CO
File Number:
333-175699-01