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KIRBY CORPORATION
                                                         CONTACT:  STEVE HOLCOMB
                                                                   713-435-1135
FOR IMMEDIATE RELEASE
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                KIRBY CORPORATION 2005 FIRST QUARTER NET EARNINGS
                             TO EXCEED $.50 PER SHARE

     -    2005  FIRST  QUARTER  EARNINGS  TO  TOP $.50 PER SHARE, ABOVE PREVIOUS
          GUIDANCE  OF  $.42  TO  $.48  PER  SHARE,  AND  COMPARES WITH $.36 PER
          SHARE FOR THE 2004 FIRST QUARTER

     -    RESULTS  POSITIVELY  IMPACTED  BY  STRONG  BUSINESS LEVELS IN BOTH THE
          MARINE  TRANSPORTATION  AND  DIESEL ENGINE SERVICES MARKETS, FAVORABLE
          OPERATING CONDITIONS IN MARCH AND CONTRACT RATE INCREASES

     -    KIRBY  TO  ANNOUNCE 2005 FIRST QUARTER RESULTS ON WEDNESDAY, APRIL 27,
          2005, WITH CONFERENCE CALL ON THURSDAY, APRIL 28, 2005

HOUSTON,  TEXAS  (APRIL  14, 2005) - Kirby Corporation ("Kirby") announced today
that  it  expects  its 2005 first quarter net earnings to exceed $.50 per share,
above  earnings guidance of $.42 to $.48 per share, and substantially above 2004
first  quarter  earnings  of $.36 per share.  Kirby will address the 2005 second
quarter  and  year guidance when it announces its first quarter results on April
27,  followed  by  its  conference  call  on  April  28,  2005.

Joe  Pyne,  Kirby's  President  and  Chief Executive Officer, commented, "During
January  and  February  2005,  Kirby's  strong  petrochemical  and  black  oil
transportation markets were negatively impacted by poor navigational conditions,
resulting  in  longer  transit times and delays, and creating pent-up demand for
movements.  During  March,  navigational  conditions  improved  significantly,
allowing  for better asset utilization, principally faster barge turnarounds and
more  efficient use of horsepower, in meeting delayed and current transportation
requirements.  Historically,  first quarter navigational conditions do not begin
to  improve until late March or early April. Contract rate increases in the 2004
fourth  quarter  and  2005  first  quarter,  coupled  with  the  January 1, 2005
escalators  for  labor  and the producer price index on contracts over a year in
duration,  also positively impacted the first quarter. The diesel engine service
segment  was  favorably affected by improved service work across the majority of
its  markets  during  the 2005 first quarter. We will be able to discuss in more
detail  the  2005  first  quarter results and outlook for the second quarter and
full year when we announce our results on April 27th, followed by our conference
call on April 28th."


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Kirby  Corporation,  based  in  Houston,  Texas, operates inland tank barges and
towing  vessels,  transporting  petrochemicals,  black  oil  products,  refined
petroleum  products  and  agricultural  chemicals  throughout  the United States
inland  waterway  system.  Through  the  diesel  engine  services segment, Kirby
provides  after-market  service  for  large  medium-speed  and high-speed diesel
engines  and  reduction  gears  used  in  marine,  power generation and railroad
applications.

Statements  contained  in  this  press  release  with  respect to the future are
forward-looking  statements.  These  statements  reflect management's reasonable
judgment  with  respect  to  future  events.  Forward-looking statements involve
risks  and  uncertainties.  Actual  results  could  differ materially from those
anticipated  as  a  result  of  various  factors,  including  cyclical  or other
downturns in demand, significant pricing competition, unanticipated additions to
industry  capacity,  changes  in  the  Jones  Act or in U.S. maritime policy and
practice,  fuel costs, interest rates, weather conditions, and timing, magnitude
and the number of acquisitions made by Kirby.  A list of additional risk factors
can  be  found in Kirby's annual report on Form 10-K for the year ended December
31,  2004,  filed  with  the  Securities  and  Exchange  Commission.


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