Exhibit 4.2


 


	NUMBER	 
	 	
    C-

    SHARES

    SEE REVERSE FOR CERTAIN DEFINITIONS

    CUSIP 675507 107



 


OCEANTECH ACQUISITIONS
I CORP.


INCORPORATED UNDER
THE LAWS OF THE STATE OF DELAWARE


CLASS A COMMON STOCK


 


This Certifies that


 


is the owner of


 


FULLY PAID AND NON-ASSESSABLE
SHARES OF THE PAR VALUE OF $0.0001 EACH OF THE CLASS A COMMON STOCK OF


 


OCEANTECH ACQUISITIONS I CORP.


(THE “COMPANY”)


 


transferable on the books
of the Company in person or by duly authorized attorney upon surrender of this certificate properly endorsed.


 


The Company will be forced
to redeem all of its shares of Class A common stock if it is unable to complete a business combination within the time period set
forth in the Company’s amended and restated certificate of incorporation, as the same may be amended from time to time, all as more
fully described in the Company’s final prospectus dated , 2021.


 


This certificate is not
valid unless countersigned by the Transfer Agent and registered by the Registrar.


 


Witness the seal of the
Company and the facsimile signatures of its duly authorized officers.


 


	Chief Executive Officer	
    [Corporate Seal]

    Delaware
	Chief Financial Officer
	 	 	 


 






     


     


    

 


OCEANTECH ACQUISITIONS I CORP.


 


The Company will furnish
without charge to each stockholder who so requests the powers, designations, preferences and relative, participating, optional or other
special rights of each class of stock or series thereof of the Company and the qualifications, limitations, or restrictions of such preferences
and/or rights. This certificate and the shares represented thereby are issued and shall be held subject to all the provisions of the Company’s
amended and restated certificate of incorporation and all amendments thereto and resolutions of the Board of Directors providing for the
issue of securities (copies of which may be obtained from the secretary of the Company), to all of which the holder of this certificate
by acceptance hereof assents. 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
    tenants 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 and not as tenants in common	 	under Uniform Gifts to Minors Act
	 	 	 	(State)
	 	 	 	 	 	 	 	 


 


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


 


For value received,
                     hereby sells, assigns and transfers unto


 


(PLEASE INSERT SOCIAL
SECURITY OR OTHER IDENTIFYING NUMBER(S) OF ASSIGNEE(S))


 


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


 


shares of the capital
stock represented by the within Certificate, and hereby irrevocably constitutes and appoints


 


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


 


Dated:


 


 


 




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


 


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 (OR ANY SUCCESSOR RULE).


 






     


     


    

 


In each case, as more
fully described in the Company’s final prospectus dated , 2021, the holder(s) of this certificate shall be entitled to receive
a pro-rata portion of certain funds held in the trust account established in connection with its initial public offering only in the
event that (i) the Company redeems the shares of Class A common stock sold in the Company’s initial public offering and
liquidates because it does not consummate an initial business combination within the time period set forth in the Corporation’s
amended and restated certificate of incorporation, as the same may be amended from time to time (such date being referred to herein as
the “Last Date”), (ii) the Company redeems the shares of Class A common stock sold in its initial public offering
in connection with a stockholder vote to amend the Company’s amended and restated certificate of incorporation to modify the substance
or timing of the Company’s obligation to redeem 100% of the Class A common stock if it does not consummate an initial business
combination by the Last Date, or (iii) if the holder(s) seek(s) to redeem for cash his, her or its respective shares of
Class A common stock in connection with a tender offer (or proxy solicitation, solely in the event the Company seeks stockholder
approval of the proposed initial business combination) setting forth the details of a proposed initial business combination. In no other
circumstances shall the holder(s) have any right or interest of any kind in or to the trust account.