UNITED STATES

                       SECURITIES AND EXCHANGE COMMISSION

                             WASHINGTON, D.C. 20549

                                  ------------

                                    FORM 8-K

                                 CURRENT REPORT

                        PURSUANT TO SECTION 13 OR 15 (d)
                     OF THE SECURITIES EXCHANGE ACT OF 1934


                  DATE OF EARLIEST EVENT REPORTED: July 5, 2005


                              ATWOOD OCEANICS, INC.
             (Exact name of registrant as specified in its charter)


                         COMMISSION FILE NUMBER 1-13167


        Internal Revenue Service - Employer Identification No. 74-1611874


                15835 Park Ten Place Drive, Houston, Texas, 77084
                                 (281) 749-7800

                                  ------------

Check the appropriate box below if the Form 8-K filing is intended to
simultaneously satisfy the filing obligation of the registrant under any of the
following provisions (see General Instruction A.2. below):

[  ]  Written communications pursuant to Rule 425 under the Securities Act 
      (17 CFR 230.425)

[  ]  Soliciting material pursuant to Rule 14a-12 under the Exchange Act 
      (17 CFR 240.14a-12)

[  ]  Pre-commencement communications pursuant to Rule 14d-2(b) under the 
      Exchange Act (17 CFR 240.14d-2(b))

[  ]  Pre-commencement communications pursuant to Rule 13e-4(c) under the 
      Exchange Act (17 CFR 240.13e-4(c))


                                      -1-



ITEM 1.01.        Entry Into a Material Definitive Agreement

     Atwood Oceanics, Inc., a Texas corporation (the "Company"), has amended its
$250,000,000 Credit Agreement among the Company, Atwood Oceanics Pacific Limited
and Nordea Bank Finland Plc and the other financial  institutions  named therein
originally  dated April 1, 2003 (as  amended,  modified,  or  supplemented,  the
"Credit  Agreement").  The Fourth Amendment to the Credit Agreement was executed
by all parties on or about July 5, 2005,  but amended  effective  as of June 15,
2005 and clarifies the covenants relating to insurance.  A copy of the amendment
is filed as Exhibit 10.1 hereto.

ITEM 9.01         Financial Statements and Exhibits

     (c) 10.1 Fourth Amendment to Credit Agreement dated June 15, 2005 among the
Company,  Atwood Oceanics  Pacific Limited and Nordea Bank Finland Plc and other
financial institutions named therein.

                                   SIGNATURES

         Pursuant to the requirements of the Securities Exchange Act of 1934,
the registrant has duly caused this report to be signed on its behalf by the
undersigned hereunto duly authorized.

                                                     Atwood Oceanics, Inc.


Date:    July 8, 2005                       By: /s/ James Holland
                                            ---------------------
                                                     James Holland
                                                     Senior Vice President





                                      -2-



                    FOURTH AMENDMENT TO THE CREDIT AGREEMENT


     FOURTH AMENDMENT TO THE-* CREDIT AGREEMENT (this "Amendment"),  dated as of
June 15, 2005, among ATWOOD OCEANICS,  INC., a Texas corporation (the "Parent"),
ATWOOD  OCEANICS  PACIFIC  LIMITED,  a company  organized  under the laws of the
Cayman Islands and a Wholly-Owned Subsidiary of the Parent (the "Borrower"), the
Lenders  party to the Credit  Agreement  (as  defined  herein),  and NORDEA BANK
FINLAND PLC, NEW YORK BRANCH, a national banking association organized under the
laws of the Republic of Finland, as Administrative Agent (in such capacity,  the
"Administrative  Agent").  All  capitalized  terms used herein and not otherwise
defined  herein shall have the  respective  meanings  provided such terms in the
Credit Agreement.


                              W I T N E S S E T H:
                               - - - - - - - - - -


     WHEREAS, the Parent, the Borrower, the Lenders and the Administrative Agent
are  parties  to a Credit  Agreement,  dated as of  April 1,  2003 (as  amended,
modified or supplemented from time to time, the "Credit Agreement");

     WHEREAS,  the Parent and the Borrower have  requested the Lenders to amend,
and the Lenders have agreed to amend, certain provisions of the Credit Agreement
on the terms and conditions set forth herein; and

     WHEREAS, the parties hereto wish to amend the Credit Agreement on the terms
and conditions set forth herein;



         NOW, THEREFORE, it is agreed;

A. Amendment to the Credit Agreement

     1. The Required  Lenders  hereby waive any Default or Event of Default that
may have arisen as a result of the Parent's failure to comply with clause (i) of
the second  sentence of Section 8.03(a) of the Credit  Agreement;  provided that
the foregoing waiver shall only apply to the mortgagee interest insurance listed
in paragraph 10 of Schedule X.

     2.  Section  8.03(a)  of the  Credit  Agreement  is hereby  amended  by (i)
deleting  the  second  sentence  appearing  therein  in its  entirety  and  (ii)
inserting the following new sentence in lieu thereof:

         "In addition to the requirements of the immediately preceding sentence,
         the Parent will at all times cause insurance of the types described in
         Schedule X to (i) be maintained (with the same scope of coverage as
         that described in Schedule X) at levels which are at least as great as
         the respective amount described on Schedule X; provided that the
         requirement set forth in this clause (i) shall not apply to the
         mortgagee interest insurance listed in paragraph 10 of Schedule X and


                                      -3-


         (ii) comply with the insurance requirements of each Collateral Rig
         Mortgage and the other Security Documents.".

B. Consents to Collateral Rig Mortgage Amendments.

     1. The Required  Lenders  hereby  consent to the  Collateral  Agent and the
Credit  Parties  entering into the amendments to the Collateral Rig Mortgages in
the form of Exhibit A and Exhibit B attached hereto.

C. Miscellaneous Provisions

     1. In order to induce the Lenders to enter into this Amendment,  the Parent
and the  Borrower  hereby  represent  and  warrant to each of the  Lenders  that
immediately after giving effect to this Amendment (i) all of the representations
and  warranties  contained  in the  Credit  Agreement  and in the  other  Credit
Documents  are  true  and  correct  in all  material  respects  on and as of the
Amendment Effective Date (unless such representations and warranties relate to a
specific earlier date, in which case such  representations  and warranties shall
be true and correct in all material  respects as of such earlier  date) and (ii)
there  exists no Default or Event of Default on the  Amendment  Effective  Date,
after giving effect to this Amendment.

     2. This  Amendment  is  limited as  specified  and shall not  constitute  a
modification,  acceptance  or  waiver  of any  other  provision  of  the  Credit
Agreement or any other Credit Document.

     3. This Amendment may be executed in any number of counterparts  and by the
different parties hereto on separate  counterparts,  each of which  counterparts
when  executed  and  delivered  shall be an  original,  but all of  which  shall
together constitute one and the same instrument.  A complete set of counterparts
executed by all the parties  hereto  shall be lodged with the  Borrower  and the
Administrative Agent.

     4. THIS AMENDMENT AND THE RIGHTS AND  OBLIGATIONS OF THE PARTIES  HEREUNDER
SHALL BE  CONSTRUED IN  ACCORDANCE  WITH AND GOVERNED BY THE LAW OF THE STATE OF
NEW YORK.

     5. This  Amendment  shall  become  effective  on the date  (the  "Amendment
Effective  Date") when the Borrower,  the  Guarantors  and the Required  Lenders
shall  have  signed  a  counterpart   hereof  (whether  the  same  or  different
counterparts)   and  shall  have  delivered   (including  by  way  of  facsimile
transmission) the same to the Administrative Agent.

     6. From and after the  Amendment  Effective  Date,  all  references  in the
Credit Agreement and in the other Credit Documents to the Credit Agreement shall
be deemed to be referenced to the Credit Agreement as modified hereby.

                                                                 * * *

                           [SIGNATURE PAGES TO FOLLOW]


                                      -4-




     IN WITNESS  WHEREOF,  the parties hereto have caused their duly  authorized
officers  to execute  and  deliver  this  Amendment  as of the date first  above
written.



                                 ATWOOD OCEANICS, INC.,
                                    as Parent and Guarantor



                                 By:    /s/James M. Holland 
                                        --------------------       
                                 Name:  James M. Holland
                                 Title: Senior Vice President


                                 ATWOOD OCEANICS PACIFIC LIMITED,
                                   as Borrower



                                 By:    /s/Michael A. Cardenas
                                        ----------------------
                                 Name:  Michael A. Cardenas
                                 Title: Director of AOPL


                                      -5-




                                 NORDEA BANK FINLAND PLC,
                                 NEW YORK BRANCH, Individually and as
                                 Administrative Agent



                                 By:    /s/ Martin Lunder
                                        -----------------
                                 Name:  Martin Lunder
                                 Title: Senior Vice President



                                 By:    /s/ Anne Engen
                                        ---------------------
                                 Name:  Anne Engen
                                 Title: Vice President







                                      -6-



                                 NORDEA BANK NORGE ASA,
                                 GR. CAYMAN BRANCH,
                                 Individually and as Issuing Lender

                                 By:    /s/ Martin Lunder   
                                        -----------------
                                 Name:  Martin Lunder
                                 Title: Senior Vice President



                                 By:    /s/ Anne Engen                      
                                        -----------------
                                 Name:  Anne Engen
                                 Title: Vice President








                                      -7-







                                 SIGNATURE PAGE TO THE FOURTH
                                 AMENDMENT, DATED AS JUNE __, 2005,
                                 TO THE CREDIT AGREEMENT, DATED AS OF
                                 APRIL 1, 2003, AMONG ATWOOD
                                 OCEANICS, INC., ATWOOD OCEANICS
                                 PACIFIC LIMITED, THE LENDERS PARTY
                                 THERETO AND NORDEA BANK FINLAND PLC,
                                 NEW YORK BRANCH, AS ADMINISTRATIVE
                                 AGENT.

                                 NAME OF INSTITUTION:


                                 DVB BANK AG
                                 



                                 By:    /s/ Illegible
                                        ------------------
                                 Name:  Illegible
                                 Title: Senior Vice President


                                 By:    /s/ Gorm Eikemo
                                        ----------------
                                 Name:  Gorm Eikemo
                                 Title: Vice President


                                      -8-





                                 SIGNATURE PAGE TO THE FOURTH
                                 AMENDMENT, DATED AS JUNE __, 2005,
                                 TO THE CREDIT AGREEMENT, DATED AS OF
                                 APRIL 1, 2003, AMONG ATWOOD
                                 OCEANICS, INC., ATWOOD OCEANICS
                                 PACIFIC LIMITED, THE LENDERS PARTY
                                 THERETO AND NORDEA BANK FINLAND PLC,
                                 NEW YORK BRANCH, AS ADMINISTRATIVE
                                 AGENT.

                                 NAME OF INSTITUTION:

                                 SKANDINAVISKA ENSKILDA BENKEN AB (PUBL.)
                               




                                 By:    /s/ Engling Amundsen
                                        --------------------
                                 Name:  Engling Amundsen
                                 Title: Legal Counsel


                                 By:    /s/ Per Frolich Keyser
                                        -----------------------
                                 Name:  Per Frolich Keyser
                                 Title: Head of Support and Staff functions


                                      -9-




                                 SIGNATURE PAGE TO THE FOURTH
                                 AMENDMENT, DATED AS JUNE __, 2005,
                                 TO THE CREDIT AGREEMENT, DATED AS OF
                                 APRIL 1, 2003, AMONG ATWOOD
                                 OCEANICS, INC., ATWOOD OCEANICS
                                 PACIFIC LIMITED, THE LENDERS PARTY
                                 THERETO AND NORDEA BANK FINLAND PLC,
                                 NEW YORK BRANCH, AS ADMINISTRATIVE
                                 AGENT.

                                 NAME OF INSTITUTION:

                                 BAYERISCHE HYPO-UND VEREINSBANK AG
                                 



                                 By:    /s/ Isecke 
                                        ------------------
                                 Name:  Isecke
                                 Title: 


                                 By:    /s/ Marquart
                                        ----------------
                                 Name:  Marquart
                                 Title:                 



                                      -10-


                                 SIGNATURE PAGE TO THE FOURTH
                                 AMENDMENT, DATED AS JUNE __, 2005,
                                 TO THE CREDIT AGREEMENT, DATED AS OF
                                 APRIL 1, 2003, AMONG ATWOOD
                                 OCEANICS, INC., ATWOOD OCEANICS
                                 PACIFIC LIMITED, THE LENDERS PARTY
                                 THERETO AND NORDEA BANK FINLAND PLC,
                                 NEW YORK BRANCH, AS ADMINISTRATIVE
                                 AGENT.

                                 NAME OF INSTITUTION:

                                 HSH NORDBANK    
                               



                                 By:    /s/ Radtke
                                        ------------------
                                 Name:  Radtke
                                 Title: Vice President


                                 By:    /s/ Kai Braunsdorf
                                        ----------------
                                 Name:  Kai Braunsdorf
                                 Title: Vice President       


                                      -11-



                                 SIGNATURE PAGE TO THE FOURTH
                                 AMENDMENT, DATED AS JUNE __, 2005,
                                 TO THE CREDIT AGREEMENT, DATED AS OF
                                 APRIL 1, 2003, AMONG ATWOOD
                                 OCEANICS, INC., ATWOOD OCEANICS
                                 PACIFIC LIMITED, THE LENDERS PARTY
                                 THERETO AND NORDEA BANK FINLAND PLC,
                                 NEW YORK BRANCH, AS ADMINISTRATIVE
                                 AGENT.

                                 NAME OF INSTITUTION:

                                 FORTIS CAPITAL CORP.
                               



                                 By:    /s/ Svein Engh
                                        --------------
                                 Name:  Svein Engh
                                 Title: Managing Director


                                 By:    /s/ C. Tobias Backer
                                        ----------------
                                 Name:  C. Tobias Backer
                                 Title: Senior Vice President  

                                      -12-