Document:

Exhibit 4.10

	
  NUMBER

  	
   

  	
   

  	
   

  
	
   

  	
   

  	
   

  	
   

  
	
  C

  	
   

  	
  [GREAT
  LAKES LOGO]

  	
   

  
	
   

  	
   

  	
   

  	
   

  
	
  COMMON
  STOCK

  	
   

  	
   

  	
  COMMON
  STOCK

  
	
  GREAT
  LAKES DREDGE & DOCK CORPORATION

  
	
   

  	
   

  	
   

  	
  SEE REVERSE FOR
  CERTAIN DEFINITIONS

  
	
   

  	
   

  	
  INCORPORATED UNDER THE LAWS OF THE STATE OF DELAWARE

  	
  CUSIP 390607 10 9

  
						

 

THIS CERTIFIES THAT

IS THE OWNER OF

FULLY PAID AND
NON-ASSESSABLE SHARES OF THE PAR VALUE OF $.0001 EACH OF THE COMMON STOCK OF

GREAT
LAKES DREDGE & DOCK CORPORATION

transferable on the books of the Corporation in person
or by duly authorized attorney upon surrender of this certificate properly
endorsed. This certificate is not valid unless countersigned by the Transfer
Agent and registered by the Registrar. Witness the seal of the Corporation and
the facsimile signatures of its duly authorized officers.

	
  COUNTERSIGNED AND REGISTERED:

  
	
  CONTINENTAL STOCK TRANSFER & TRUST COMPANY

  
	
  (JERSEY CITY,
  N.J.)

  
	
  TRANSFER AGENT AND
  REGISTRAR

  
	
   

  
	
  BY

  	
   

  	
   

  
	
   

  	
  AUTHORIZED SIGNATURE

  	
   

  

Dated:

	
  /s/ [Illegible]

  	
   

  	
  [SEAL]

  	
   

  	
  /s/ [Illegible]

  
	
  SECRETARY

  	
   

  	
   

  	
   

  	
  PRESIDENT AND
  CHIEF EXECUTIVE OFFICER

  

 

SUBSCRIPTION FORM

To
Be Executed by the Registered Holder in Order to Exercise Warrants

The
undersigned Registered Holder irrevocably elects to exercise          
Warrants represented by this Warrant Certificate, and to purchase the shares of
Common Stock issuable upon the exercise of such Warrants, and requests that
Certificates for such shares shall be issued in the name of

	
   

  
	
  (PLEASE TYPE OR PRINT NAME
  AND ADDRESS)

  
	
   

  
	
   

  
	
   

  
	
   

  
	
   

  
	
   

  
	
  (SOCIAL SECURITY
  OR TAX IDENTIFICATION NUMBER)

  
	
   

  
	
  and be delivered to

  	
   

  
	
  (PLEASE PRINT OR
  TYPE NAME AND ADDRESS)

  
	
   

  
	
   

  
	
  and, if such number of Warrants shall not be all the
  Warrants evidenced by this Warrant Certificate, that a new Warrant
  Certificate for the balance of such Warrants be registered in the name of,
  and delivered to, the Registered Holder at the address stated below:

  
	
   

  	
   

  	
   

  	
   

  
	
  Dated:

  	
   

  	
   

  	
  (SIGNATURE)

  
	
   

  	
   

  	
   

  	
   

  
	
   

  	
   

  	
  (ADDRESS)

  
	
   

  	
   

  	
   

  
	
   

  	
   

  	
   

  
	
   

  	
   

  	
   

  
	
   

  	
   

  	
  (TAX IDENTIFICATION NUMBER)

  
					

 

APPLICATION TO PURCHASE SHARES

To Be Executed by
Purchaser of Common Stock Issuable Upon Exercise of Warrants

The undersigned purchaser of the Common Stock to be
issued upon exercise of the Warrants (the “Purchaser”)
hereby certifies to the Company
that (please complete (a) or (b) and (c)
and/or (d) as applicable):

                                               o                                  (a)                                 The purchaser is a U.S. CITIZEN.

                                               o                                  (b)                                The purchaser is a NON-U.S. CITIZEN.

                                               o                                  (c)                                 The purchaser will hold           
shares for one or more beneficial owners who are U.S. CITIZENS.

                                               o                                  (d)                                The purchaser will hold           
shares for one or more beneficial owners who are NON-U.S. CITIZENS.

I certify that, to
the best of my knowledge and belief, this Application is correct and, if
applicable, I have authority to sign this Application on behalf of the entity
that is the Purchaser.

	
   

  
	
  Printed Name (add entity
  name if applicable)

  
	
   

  
	
   

  
	
  Title (if
  applicable)

  
	
   

  
	
   

  
	
  Signature and
  Date

  

 

ASSIGNMENT

To Be Executed by the
Registered Holder in Order to Assign Warrants

 

	
  For
  Value Received,

  	
   

  	
  hereby sell, assign, and transfer unto

  
	
   

  	
   

  	
   

  
	
   

  
	
  (PLEASE TYPE OR
  PRINT NAME AND ADDRESS)

  
	
   

  
	
   

  	
   

  	
   

  
	
   

  
	
   

  	
   

  	
   

  
	
   

  
	
  (SOCIAL SECURITY
  OR TAX IDENTIFICATION NUMBER)

  
	
   

  	
   

  	
   

  
	
  and be delivered to

  	
   

  
	
  (PLEASE PRINT OR
  TYPE NAME AND ADDRESS)

  
	
   

  	
   

  
	
   

  	
  of the Warrants represented by this Warrant
  Certificate, and hereby irrevocably constitute and

  
	
  appoint

  	
   

  	
  Attorney to transfer this Warrant Certificate on the
  books of the Company, with full power of 

  
	
   

  	
   

  	
  substitution in the premises.

  
	
   

  	
   

  	
   

  
	
  Dated:

  	
   

  	
   

  	
   

  
	
   

  	
   

  	
   

  	
  (SIGNATURE)

  
										

                                                                                                

THE SIGNATURE TO THE
ASSIGNMENT OF THE SUBSCRIPTION FORM MUST CORRESPOND TO THE NAME WRITTEN UPON
THE FACE OF THIS WARRANT CERTIFICATE IN EVERY PARTICULAR, WITHOUT ALTERATION OR
ENLARGEMENT OR ANY CHANGE WHATSOEVER, AND MUST BE GUARANTEED BY A COMMERCIAL
BANK OR TRUST COMPANY OR A MEMBER FIRM OF THE AMERICAN STOCK EXCHANGE, NEW YORK
STOCK EXCHANGE, PACIFIC STOCK EXCHANGE OR CHICAGO STOCK EXCHANGE.Exhibit 4.13

	
  NUMBER

  	
   

  	
   

  	
  WARRANTS

  
	
  W

  	
   

  	
  (SEE
  REVERSE SIDE FOR LEGEND)

  (THIS WARRANT WILL BE VOID IF NOT EXERCISED PRIOR TO 5:00 P.M.

  NEW YORK CITY TIME, FEBRUARY 16, 2009)

  	
   

  
	
   

  	
   

  	
   

  	
  CUSIP 390607 11 7

  
	
  GREAT
  LAKES DREDGE & DOCK CORPORATION

  WARRANT

  

 

THIS CERTIFIES THAT, for
value received

is the registered holder of a Warrant or Warrants
expiring February 16, 2009 (the “Warrant”) to purchase one fully paid and
non-assessable share of Common Stock, par value $.0001 per share (“Shares”), of
Great Lakes Dredge & Dock Corporation, a Delaware corporation (the “Company”),
for each Warrant evidenced by this Warrant Certificate. The Warrant entitles
the holder thereof to purchase from the Company, commencing on the later of (i)
the consummation by the Company of a merger, capital stock exchange, asset
acquisition or other similar business combination or (ii) February 17, 2006,
such number of Shares of the Company at the price of $10.00 per share, upon
surrender of this Warrant Certificate and payment of the Warrant Price at the
office or agency of the Warrant Agent, Continental Stock Transfer & Trust
Company (such payment to be made by check made payable to the Warrant Agent),
but only subject to the conditions set forth herein and in the Warrant Agreement
between the Company and Continental Stock Transfer & Trust Company. The
Warrant Agreement provides that upon the occurrence of certain events the
Warrant Price and the number of Warrant Shares purchasable hereunder, set forth
on the face hereof, may, subject to certain conditions, be adjusted. The term
Warrant Price as used in this Warrant Certificate refers to the price per Share
at which Shares may be purchased at the time the Warrant is exercised.

No fraction of a Share will be issued upon any exercise
of a Warrant. If the holder of a Warrant would be entitled to receive a
fraction of a Share upon any exercise of a Warrant, the Company shall, upon
such exercise, round up or down to the nearest whole number the number of
Shares to be issued to such holder.

Upon any exercise of the Warrant for less than the
total number of full Shares provided for herein, there shall be issued to the
registered holder hereof or his assignee a new Warrant Certificate covering the
number of Shares for which the Warrant has not been exercised. Warrant
Certificates, when surrendered at the office or agency of the Warrant Agent by
the registered holder hereof in person or by attorney duly authorized in
writing, may be exchanged in the manner and subject to the limitations provided
in the Warrant Agreement, but without payment of any service charge, for
another Warrant Certificate or Warrant Certificates of like tenor and
evidencing in the aggregate a like number of Warrants.

Upon due presentment for registration of transfer of
the Warrant Certificate at the office or agency of the Warrant Agent, a new
Warrant Certificate or Warrant Certificates of like tenor and evidencing in the
aggregate a like number of Warrants shall be issued to the transferee in
exchange for this Warrant Certificate, subject to the limitations provided in
the Warrant Agreement, without charge except for any applicable tax or other
governmental charge.

The Company and the Warrant Agent may deem and treat
the registered holder as the absolute owner of this Warrant Certificate
(notwithstanding any notation of ownership or other writing hereon made by
anyone), for the purpose of any exercise hereof, of any distribution to the
registered holder, and for all other purposes, and neither the Company nor the
Warrant Agent shall be affected by any notice to the contrary.

This Warrant does not entitle the registered holder to
any of the rights of a stockholder of the Company. The Company reserves the
right to call the Warrant, at any time prior to its exercise, with a notice of
call in writing to the holders of record of the Warrant, giving 30 days’ notice
of such call at any time after the Warrant becomes exercisable if the last sale
price of the Shares has been at least $17.00 per share on each of 20 trading
days within any 30 trading day period ending on the third business day prior to
the date on which notice of such call is given. The call price of the Warrants
is to be $.01 per Warrant. Any Warrant either not exercised or tendered back to
the Company by the end of the date specified in the notice of call shall be
canceled on the books of the Company and have no further value except for the
$.01 call price.

	
  COUNTERSIGNED:

  	
   

  	
  [SEAL]

  	
   

  	
   

  	
  By:

  
	
  CONTINENTAL
  STOCK TRANSFER & TRUST COMPANY

  	
                                          

  	
  /s/ [Illegible]

  
	
  (NEW YORK, NY)

  	
  PRESIDENT AND CHIEF
  EXECUTIVE OFFICER

  
	
  AS WARRANT AGENT

  	
   

  
	
   

  	
  /s/ [Illegible]

  
	
  AUTHORIZED
  OFFICER

  	
  SECRETARY

  
								

 

 

GREAT LAKES DREDGE & DOCK CORPORATION

THE COMPANY IS AUTHORIZED TO ISSUE MORE THAN ONE
SERIES OF PREFERRED STOCK. THE COMPANY WILL FURNISH, WITHOUT CHARGE, TO THE HOLDER
OF THIS CERTIFICATE, UPON SUCH HOLDER’S WRITTEN REQUEST, THE POWERS,
DESIGNATIONS, PREFERENCES AND RELATIVE, PARTICIPATING, OPTIONAL, OR OTHER SPECIAL RIGHTS OF EACH
SERIES OF PREFERRED STOCK OF THE COMPANY AND THE QUALIFICATIONS, LIMITATIONS OR
RESTRICTIONS OF SUCH PREFERENCES AND/OR RIGHTS. 

THE SECURITIES OF THE COMPANY REPRESENTED BY THIS
CERTIFICATE ARE SUBJECT TO THE OWNERSHIP RESTRICTIONS, TRANSFER RESTRICTIONS AND
OTHER TRANSFER PROVISIONS SET FORTH IN THE COMPANY’S CERTIFICATE OF
INCORPORATION, AS IN EFFECT FROM TIME TO TIME. A copy of the Certificate of Incorporation will be furnished
without charge by the Company to the holder hereof upon written request. For
the definition of “beneficially owned,” “U.S. Citizen,” and “Non-U.S. Citizen,”
see the Certificate of Incorporation. Under the Certificate of Incorporation,
no more than 22.4% of the outstanding shares of each class or series of the Company’s
stock may be Beneficially Owned by Non-U.S. Citizens, and the Company may not
recognize any purported transfer of shares of such class or series to Non-U.S. Citizens
if such percentage would be exceeded, except to the extent necessary to effect
the remedies available under the Certificate of Incorporation, which include
voiding such transfer, treating such shares as having been transferred unto a
trust for the benefit of U.S. Citizens, or redeeming such shares. The trust and
redemption remedies apply equally to stockholders that become Non-U.S.
Citizens. Subject to the foregoing transfer restrictions, the shares
represented by this Certificate will be transferred on the books of the Company
only if the Application to Transfer Shares set forth below has been duly
executed by the transferee.

APPLICATION TO TRANSFER SHARES

The undersigned (the “Applicant”) hereby applies to
transfer to the name of the Applicant of the number of shares of the Company’s
common stock indicated below and hereby certifies to the Company that (please complete (a) or (b) and (c) and/or
(d) as applicable):

                                               o                                      (a)                                    The Applicant is a U.S. CITIZEN.

                                               o                                      (b)                                   The Applicant is a NON-U.S. CITIZEN.

                                               o                                      (c)                                    The Applicant will hold          
shares for one or more beneficial owners who are U.S. CITIZENS.

                                               o                                      (d)                                   The Applicant will hold          
shares for one or more beneficial owners who are NON-U.S. CITIZENS.

I certify that, to the best of my knowledge and
belief, this Application is correct and, if applicable, I have authority to
sign this Application on behalf of the entity that is the Applicant.

	
   

  
	
  Printed Name (add entity
  name if applicable)

  
	
   

  
	
   

  
	
  Title (if
  applicable)

  
	
   

  
	
   

  
	
  Signature and
  Date

  

 

The following abbreviations,
when used in the inscription on the face of this certificate, shall be
construed as though they were written out in full according to applicable laws
or regulations:

	
  TEN COM

  	
  —as tenets in common

  	
  UNIF
  GIFT MIN ACT—

  	
   

  	
  Custodian

  	
   

  
	
  TEN ENT

  	
  —as tenants by the entireties

  	
   

  	
  (Cust)

  	
   

  	
  (Minor)

  
	
  JT TEN 

  	
  —as joint tenants with right of survivorship 

  	
   

  	
  under Uniform Gifts to
  Minors

  
	
   

  	
  and not as tenants in common

  	
   

  	
  Act

  	
   

  
	
  COM PROP

  	
  —as community property

  	
   

  	
   

  	
  (State)

  
	
   

  	
   

  	
  UNIF
  TRF MIN ACT—

  	
   

  	
  Custodian

  	
  (units age

  	
   

  	
  )

  
	
   

  	
   

  	
   

  	
  (Cust)

  	
   

  	
   

  
	
   

  	
   

  	
   

  	
  under Uniform Transfers
  to Minors

  
	
   

  	
   

  	
   

  	
  Act

  	
   

  	
   

  
	
   

  	
   

  	
   

  	
   

  	
  (State)

  
											

 

Additional abbreviations may also be used though
not in the above list.

For value received,
                    hereby
sell, assign and transfer unto

	
  PLEASE INSERT SOCIAL
  SECURITY OR OTHER

  IDENTIFYING NUMBER OF ASSIGNEE

  	
   

  
	
   

  	
   

  
	
   

  	
   

  

 

	
   

  
	
  (PLEASE PRINT OR TYPEWRITE
  NAME AND ADDRESS, INCLUDING ZIP CODE, OF ASSIGNEE)

  
	
   

  	
   

  
	
   

  
	
   

  
	
   

  
	
   

  	
   

  
	
   

  	
  Shares

  
	
  of the capital stock represented by the within
  Certificate, and do hereby irrevocably constitute and appoint

  
	
   

  	
   

  
	
   

  	
  Attorney

  
	
  to transfer the said stock on the books of the
  within named Corporation with full power of substitution in the premises.

  

 

	
  Dated:

  	
   

  	
   

  
	
   

  	
   

  	
   

  
	
   

  	
  (SIGNATURE)

  	
   

  
	
   

  	
   

  	
  NOTICE: THE SIGNATURE(S) TO THIS ASSIGNMENT MUST
  CORRESPOND WITH THE NAME(S) AS WRITTEN UPON THE FACE OF THE CERTIFICATE IN
  EVERY PARTICULAR, WITHOUT ALTERATION OR ENLARGEMENT OR ANY CHANGE WHATSOEVER.

  
	
   

  	
  SIGNATURE(S)
  GUARANTEED:

  	
   

  
	
   

  	
  By

  	
   

  
	
   

  	
   

  	
  THE SIGNATURE(S) MUST BE GUARANTEED BY AN ELIGIBLE
  GUARANTOR INSTITUTION (BANKS, STOCKBROKERS, SAVINGS AND LOAN ASSOCIATIONS AND
  CREDIT UNIONS WITH MEMBERSHIP IN AN APPROVED SIGNATURE GUARANTEE MEDALLION
  PROGRAM), PURSUANT TO S.E.C. RULE 17Ad-15.

  

 

KEEP THIS
CERTIFICATE IN A SAFE PLACE. IF IT IS LOST, STOLEN, MUTILATED OR DESTROYED, THE
CORPORATION WILL REQUIRE A BOND OF INDEMNITY AS A CONDITION TO THE ISSUANCE OF
A REPLACEMENT CERTIFICATE.

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