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KIRBY  CORPORATION                                       Contact:  Steve Holcomb
                                                                   713-435-1135


FOR IMMEDIATE RELEASE
- ---------------------


                           KIRBY CORPORATION ANNOUNCES
                           2004 FIRST QUARTER RESULTS


- -    2004  FIRST  QUARTER  EARNINGS PER SHARE WERE $.36, AN INCREASE OF 29% OVER
     $.28  REPORTED  FOR  THE  2003  FIRST  QUARTER

- -    RESULTS REFLECT CONTINUED STRENGTHENING OF PETROCHEMICAL VOLUMES AND STRONG
     BLACK  OIL  PRODUCT  VOLUMES

- -    2004 SECOND QUARTER EARNINGS PER SHARE GUIDANCE IS $.50 TO $.54 VERSUS $.48
     REPORTED  FOR  THE  2003  SECOND  QUARTER

HOUSTON,  TEXAS  (APRIL 28, 2004) - Kirby Corporation ("Kirby") (NYSE:KEX) today
announced net earnings for the first quarter ended March 31, 2004 of $9,020,000,
or  $.36 per share, compared with net earnings of $6,868,000, or $.28 per share,
for  the 2003 first quarter.  The 2004 first quarter results were at the top end
of  Kirby's  published  earnings  guidance  range  of  $.30  to  $.36 per share.
Consolidated revenues for the 2004 first quarter were $157,315,000 compared with
$148,200,000  for  the  2003  first  quarter.

Revenues for the marine transportation segment increased 8% and operating income
increased  23%  for  the  2004  first quarter compared with the first quarter of
2003.  The  higher  results  reflected  continued strengthening of petrochemical
volumes  and  stronger  black  oil  volumes, as well as fuel, labor and consumer
price  index escalators on numerous contracts.  The increases also reflected the
full  2004  first  quarter impact of the January 15, 2003 purchase of the inland
tank  barge  fleet  of  SeaRiver  Maritime, Inc., the U.S. marine transportation
affiliate  of  Exxon  Mobil  Corporation.

During the 2004 first quarter, the marine transportation segment's petrochemical
volumes  continued  to  strengthen,  a reflection of an improving U. S. economy.
Black  oil  products  volumes  were  strong,  the result of refinery maintenance
schedules,  and  refined products volumes were greater than anticipated.  Liquid
fertilizer  volumes  were  weaker than anticipated due to high Midwest inventory
levels.

The  diesel  engine  services  segment  reported 6% lower revenues, but slightly
higher  operating  income  for  the  2004  first  quarter  compared  with  the
corresponding  2003  quarter.    During  the  2004  first  quarter,  the Midwest
operations  benefited  from  a strong


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Great  Lakes market, along with a continued improvement in the Midwest dry cargo
market.  The  segment's Gulf Coast, East Coast and power generation markets were
weak.

On  April  7,  2004,  the Company purchased the Paducah, Kentucky diesel service
operation  and  parts inventory of Walker Paducah Corp. ("Walker"), a subsidiary
of  Ingram  Barge  Company,  for  approximately  $5,800,000 in cash.  The annual
revenues  attributable  to  the  Walker  asset  purchase  are  estimated  in the
$7,000,000  to  $8,000,000  range  and  the  operating margin is estimated to be
consistent  with  the  diesel  engine  services  historical  margin.

On  April  15,  2004, the Company purchased a one-third interest in Osprey Line,
LLC ("Osprey") for $4,220,000.  Osprey, founded in 2000, operates a barge feeder
service  for  cargo  containers between Houston, New Orleans and Baton Rouge, as
well  as ports located above Baton Rouge on the Mississippi River.  Revenues for
Osprey  for 2003 were approximately $11,700,000.  The purchase will be accounted
for  under  the  equity  method  of  accounting.

Joe Pyne, President and Chief Executive Officer of Kirby, commented, "During the
2004  first  quarter,  several of our core transportation markets improved.  The
first quarter is always difficult because of poor operating conditions caused by
weather.  Our  2004 first quarter was no exception.  Navigational delays totaled
2,359  days,  only 9% less than the record 2,583 days recorded in the 2003 first
quarter."

Commenting  on  the 2004 second quarter market conditions and guidance, Mr. Pyne
said,  "We  expect  our  transportation markets to generally continue to improve
this  quarter.  The  economy  appears  to  be in better shape and the demand for
petrochemical and refined products volumes is stronger.  We anticipate the black
oil  market  to  remain  firm,  but liquid fertilizer volumes are anticipated to
remain  seasonally  weak.  For  the  2004 second quarter, our earnings per share
guidance  is  $.50  to  $.54,  compared  with  $.48 reported for the 2003 second
quarter.  For  the  2004 year, our guidance remains at $1.85 to $1.95 per share.
This  guidance  compares  with  2003  net  earnings of $1.67 per share.  Capital
spending  guidance  for  2004  remains  in the $85 to $90 million range and will
include  approximately  $41 million for the construction of 16 new 30,000 barrel
petrochemical  tank  barges  and  10  new  30,000 barrel black oil tank barges."

This  earnings press release includes marine transportation performance measures
for both the 2004 and 2003 first quarters.  The performance measures include ton
miles,  revenues  per  ton  mile,  towboats operated and delay days.  Comparable
performance  measures  for the 2003 and 2002 years and quarters are available at
Kirby's  web  site  under  the  caption Performance Measurements in the Investor
Relations  section.  Kirby's  homepage  can  be  accessed  by  visiting
www.kirbycorp.com.
- -----------------

A  conference  call  is scheduled at 10:00 a.m. central time tomorrow, Thursday,
April 29, 2004, to discuss the 2004 first quarter and outlook for the 2004 year.
The conference call number is 877-546-1574 for domestic callers and 712-257-0019
for international callers.  The passcode is Kirby and the leader's name is Steve
Holcomb.  An  audio  playback  will be available starting at approximately 12:00
noon  central  time  on  Thursday,  April  29  through 6:00 p.m. central time on
Friday,  May  28,  2004,  by  dialing  888-562-6189  for  domestic  callers  and
402-280-9984  for  international  callers.  The  conference  call  can  also


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be  accessed  by  visiting  Kirby's  homepage at http://www.kirbycorp.com/ or at
                                                 -------------------------
http://www.vcall.com/.  A  replay  will  be available on each of those web sites
- ---------------------
following  the  conference  call.

The  financial  and  other information to be discussed in the conference call is
available  in this press release and in a Form 8-K filed with the Securities and
Exchange  Commission.  This  press  release  and the Form 8-K include a non-GAAP
financial  measure,  EBITDA, which Kirby defines as net earnings before interest
expense,  taxes  on  income, depreciation and amortization.  A reconciliation of
EBITDA  for the 2004 and 2003 first quarters with GAAP net earnings for the same
periods  is included in the Condensed Consolidated Financial Information in this
press  release.

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 diesel engines used in
marine,  power  generation  and  industrial,  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 the timing,
magnitude  and  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,  2003,  filed  with  the  Securities  and  Exchange  Commission.

CONFERENCE  CALL  INFORMATION
- -----------------------------
Date:     Thursday, April 29, 2004
Time:     10:00 a.m. central time
U.S.:     877-546-1574
Int'l:    712-257-0019
Leader:   Steve Holcomb
Passcode: Kirby

                                - Tables follow -


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A  summary  of  the  results  for  the  first  quarter  follows.

                  CONDENSED CONSOLIDATED STATEMENTS OF EARNINGS
                  ---------------------------------------------

                                                          First  Quarter
                                                 --------------------------------
                                                      2004             2003
                                                 ---------------  ---------------
                                                            
                                                 (unaudited, $ in thousands except
                                                         per share amounts)
Revenues:
  Marine transportation . . . . . . . . . . . .  $      135,493   $      125,065
  Diesel engine services. . . . . . . . . . . .          21,822           23,135
                                                 ---------------  ---------------
                                                        157,315          148,200
                                                 ---------------  ---------------
Costs and expenses:
  Costs of sales and operating expenses . . . .         102,927          100,851
  Selling, general and administrative . . . . .          19,965           17,561
  Taxes, other than on income . . . . . . . . .           3,252            3,051
  Depreciation and other amortization . . . . .          13,797           12,232
  Loss on disposition of assets . . . . . . . .               2                7
                                                 ---------------  ---------------
                                                        139,943          133,702

    Operating income. . . . . . . . . . . . . .          17,372           14,498
  Equity in earnings of marine affiliates . . .             822              436
  Other expense . . . . . . . . . . . . . . . .            (271)            (403)
  Interest expense. . . . . . . . . . . . . . .          (3,374)          (3,454)
                                                 ---------------  ---------------

    Earnings before taxes on income . . . . . .          14,549           11,077
  Provision for taxes on income . . . . . . . .          (5,529)          (4,209)
                                                 ---------------  ---------------
    Net earnings. . . . . . . . . . . . . . . .  $        9,020   $        6,868
                                                 ===============  ===============
Net earnings per share of common stock:
  Basic . . . . . . . . . . . . . . . . . . . .  $         0.37   $         0.29
  Diluted . . . . . . . . . . . . . . . . . . .  $         0.36   $         0.28
Common stock outstanding (in thousands):
  Basic . . . . . . . . . . . . . . . . . . . .          24,345           24,062
  Diluted . . . . . . . . . . . . . . . . . . .          24,913           24,327

             CONDENSED CONSOLIDATED STATEMENTS OF EARNINGS
             ---------------------------------------------
                                                          First Quarter
                                                 --------------------------------
                                                       2004           2003
                                                 ---------------  ---------------
                                                (unaudited, $ in thousands except
                                                          per share amounts)
EBITDA: (1)
  Net earnings. . . . . . . . . . . . . . . . .  $        9,020   $        6,868
  Interest expense. . . . . . . . . . . . . . .           3,374            3,454
  Provision for taxes on income . . . . . . . .           5,529            4,209
  Depreciation and other amortization . . . . .          13,797           12,232
                                                 ---------------  ---------------
                                                 $       31,720   $       26,763
                                                 ===============  ===============
EBITDA per share - diluted (1). . . . . . . . .  $         1.27   $         1.10
Capital expenditures. . . . . . . . . . . . . .  $       24,047   $       18,752
Acquisition of businesses and marine equipment.  $        1,110   $       36,316
                                                             March 31,
                                                 --------------------------------
                                                       2004         2003
                                                 ---------------  ---------------
                                                    (unaudited, $ in thousands)
Long-term debt, including current portion . . .  $      250,409   $      295,517
Stockholders' equity. . . . . . . . . . . . . .  $      381,674   $      330,582
Debt to capitalization ratio. . . . . . . . . .            39.6%            47.2%



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                  MARINE TRANSPORTATION STATEMENTS OF EARNINGS
                  --------------------------------------------

                                                          First Quarter
                                                --------------------------------
                                                     2004             2003
                                                ---------------  ---------------
                                                           
                                                   (unaudited, $ in thousands)

Marine transportation revenues . . . . . . . .  $       135,493  $       125,065
                                                ---------------  ---------------

Costs and expenses:
  Costs of sales and operating expenses. . . .           86,966           83,171
  Selling, general and administrative. . . . .           15,504           13,783
  Taxes, other than on income. . . . . . . . .            3,133            2,902
  Depreciation and other amortization. . . . .           13,016           11,505
                                                ---------------  ---------------
                                                        118,619          111,361
                                                ---------------  ---------------

    Operating income . . . . . . . . . . . . .  $        16,874  $        13,704
                                                ===============  ===============

    Operating margins. . . . . . . . . . . . .           12.5 %           11.0 %
                                                ===============  ===============


           DIESEL ENGINE SERVICES STATEMENTS OF EARNINGS
           ---------------------------------------------

                                                         First Quarter
                                                --------------------------------
                                                      2004            2003
                                                ---------------  ---------------
                                                   (unaudited, $ in thousands)

Diesel engine services revenues. . . . . . . .  $        21,822  $        23,135
                                                ---------------  ---------------

  Costs and expenses:
  Costs of sales and operating expenses. . . .           15,934           17,629
  Selling, general and administrative. . . . .            3,034            2,754
  Taxes, other than on income. . . . . . . . .               82               83
  Depreciation and other amortization. . . . .              333              252
                                                ---------------  ---------------
                                                         19,383           20,718
                                                ---------------  ---------------

    Operating income . . . . . . . . . . . . .  $         2,439  $         2,417
                                                ===============  ===============

    Operating margins. . . . . . . . . . . . .           11.2 %           10.4 %
                                                ===============  ===============


                        OTHER COSTS AND EXPENSES
                        ------------------------

                                                          First Quarter
                                                --------------------------------
                                                      2004            2003
                                                ---------------  ---------------
(unaudited, $in thousands)

General corporate expenses . . . . . . . . . .  $         1,939  $         1,616
                                                ===============  ===============

Loss on disposition of assets. . . . . . . . .  $             2  $             7
                                                ===============  ===============



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     MARINE TRANSPORTATION PERFORMANCE MEASUREMENTS
     ----------------------------------------------

                                            First Quarter
                                           --------------
                                            2004    2003
                                           ------  ------
                                             
Ton Miles (in millions) (2) . . . . . . .   3,735   3,455
Revenue/Ton Mile (cents/tm) (3) . . . . .     3.6     3.6
Towboats operated (average) (4) . . . . .     233     229
Delay Days (5). . . . . . . . . . . . . .   2,359   2,583
Average cost per gallon of fuel consumed.  $  .99  $ 1.03
Tank barges:
  Active. . . . . . . . . . . . . . . . .     874     905
  Inactive. . . . . . . . . . . . . . . .      71      62
Barrel Capacities (in millions):
  Active. . . . . . . . . . . . . . . . .    16.0    16.5
  Inactive. . . . . . . . . . . . . . . .     1.3     1.1
<FN>

(1)  Kirby  has  historically evaluated its operating performance using numerous
     measures,  one  of  which  is  EBITDA,  a non-GAAP financial measure. Kirby
     defines  EBITDA  as  net earnings before interest expense, taxes on income,
     depreciation  and  amortization.  EBITDA  is  presented because of its wide
     acceptance  as  a  financial  indicator.  EBITDA  is one of the performance
     measures  used  in  Kirby's  incentive  bonus  plan. EBITDA is also used by
     rating  agencies  in  determining  Kirby's  credit  rating  and by analysts
     publishing  research  reports  on  Kirby,  as  well  as  by  investors  and
     investment  bankers  generally  in  valuing  companies.  EBITDA  is  not  a
     calculation  based  on  generally accepted accounting principles and should
     not  be  considered  as an alternative to, but should only be considered in
     conjunction  with,  Kirby's  GAAP  financial  information.
(2)  Ton  miles indicate fleet productivity by measuring the distance (in miles)
     a  loaded  tank barge is moved. Example: A typical 30,000 barrel tank barge
     loaded  with 3,300 tons of liquid cargo is moved 100 miles, thus generating
     330,000  ton  miles.
(3)  Marine transportation revenues divided by ton miles. Example: First quarter
     2004  revenues  of  $135,493,000  divided  by 3,735,000,000 ton miles = 3.6
     cents.
(4)  Towboats  operated  are  the average number of owned and chartered towboats
     operated  during  the  period.
(5)  Delay  days  measures  the  lost  time  incurred by a tow (towboat and tank
     barges)  during  transit.  The  measure  includes  transit delays caused by
     weather,  lock  congestion  and  other  navigational  factors.


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