Ownership Submission
FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number: 3235-0287
Expires: January 31, 2005
Estimated average burden hours per response... 0.5

(Print or Type Responses)
1. Name and Address of Reporting Person *
SIMS JACK M
   2. Issuer Name and Ticker or Trading Symbol
KIRBY CORP [KEX] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
Vice President
(Last)
(First)
(Middle)
55 WAUGH DRIVE, SUITE 1000		 3. Date of Earliest Transaction (Month/Day/Year)
08/01/2005
(Street)

HOUSTON, TX 77007		 4. If Amendment, Date Original Filed(Month/Day/Year)
 6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)		 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code
(Instr. 8)		 4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)		 5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)		 6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)		 7. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V Amount (A) or (D) Price
Common Stock, par value $.10 per share 08/01/2005   M   10,000 A $ 18.5625 13,008 D  
Common Stock, par value $.10 per share 08/01/2005   M   3,000 A $ 17.9063 16,008 D  
Common Stock, par value $.10 per share 08/01/2005   M   8,000 A $ 27.13 24,008 D  
Common Stock, par value $.10 per share 08/01/2005   S   21,000 D $ 48.5 3,008 D  
Common Stock, par value $.10 per share 08/01/2005   A   55 A (1) 1,907 I 401(k) Plan
Common Stock, par value $.10 per share 08/01/2005   I(2)   1,907 D $ 49.26 0 I 401(k) plan

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number. SEC 1474 (9-02)

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)		 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code
(Instr. 8)		 5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)		 6. Date Exercisable and Expiration Date
(Month/Day/Year)		 7. Title and Amount of Underlying Securities
(Instr. 3 and 4)		 8. Price of Derivative Security
(Instr. 5)		 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)		 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)		 11. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Employee Stock Option (Right to Buy) $ 18.5625 08/01/2005   M     10,000 01/20/2001(3) 01/20/2007 Common Stock 10,000 $ 18.5625 27,500 D  
Employee Stock Option (Right to Buy) $ 17.9063 08/01/2005   M     3,000 01/18/2003(3) 01/18/2009 Common Stock 3,000 $ 17.9063 24,500 D  
Employee Stock Option (Right to Buy) $ 27.13 08/01/2005   M     8,000 01/28/2005(4) 01/28/2007 Common Stock 8,000 $ 27.13 16,500 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
SIMS JACK M
55 WAUGH DRIVE, SUITE 1000
HOUSTON, TX 77007		       Vice President  

Signatures

 G. Stephen Holcomb, Agent and Attorney-in-Fact   08/03/2005
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) These shares were acquired from January 1, 2005 through July 18, 2005 pursuant to the Kirby Corporation 401(k) Plan, at prices ranging from $39.40 to $47.19. The information reported herein is based on a plan statement dated August 1, 2005.
(2) These shares were transferred from indirectly owned 401(k) stock into another investment option within the Kirby Corporation 401(k) Plan.
(3) Original option exercisable 25% after one year, 50% after two years, 75% after three years and 100% after four years from date of grant.
(4) Original option exercisable 33% after one year, 67% after two years and 100% after three years from date of grant.

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

Potential persons who are to respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB number.