[KIRBY LOGO]


KIRBY CORPORATION                                   CONTACT:  STEVE HOLCOMB
                                                              713-435-1135

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


                           KIRBY CORPORATION ANNOUNCES
                   2004 THIRD QUARTER AND NINE MONTHS RESULTS

     -    EARNINGS  PER  SHARE FOR THE 2004 THIRD QUARTER INCREASED TO $.53 FROM
          $.46  IN THE 2003 THIRD QUARTER AND TO $1.44 FOR THE FIRST NINE MONTHS
          OF  2004  FROM  $1.22  IN  THE  2003  FIRST  NINE  MONTHS

     -    2004  THIRD  QUARTER  AND  FIRST  NINE  MONTHS RESULTS WERE NEGATIVELY
          IMPACTED BY HURRICANE IVAN, HIGHER FUEL COSTS, CLOSURE FOR REPAIR OF A
          MAJOR  LOCK  ON THE OHIO RIVER AND SALE OF A 50% OWNED LIQUID PRODUCTS
          TERMINAL

     -    2004  FOURTH  QUARTER  EARNINGS  PER  SHARE  GUIDANCE  IS $.50 TO $.54
          COMPARED  WITH  $.45  IN  THE  2003  FOURTH  QUARTER

     -    2004  YEAR  EARNINGS  PER  SHARE  GUIDANCE INCREASED TO $1.94 TO $1.98
          VERSUS  $1.67  EARNED  IN  THE  2003  YEAR

HOUSTON, TEXAS (OCTOBER 27, 2004) - Kirby Corporation ("Kirby") (NYSE:KEX) today
announced  net  earnings  for  the  third  quarter  ended  September 30, 2004 of
$13,250,000, or $.53 per share, an 18% improvement compared with $11,211,000, or
$.46  per  share,  for  the  third  quarter of 2003.  The 2004 third quarter net
earnings  were in line with Kirby's published earnings guidance range of $.50 to
$.54  per  share.  Consolidated  revenues  for  the  2004  third  quarter  were
$173,389,000,  a  12%  increase  compared  with  $154,507,000 for the 2003 third
quarter.

Kirby  reported  record  net  earnings  for  the  first  nine  months of 2004 of
$36,048,000,  or  $1.44  per share, a 21% increase compared with $29,868,000, or
$1.22  per  share, for the first nine months of 2003.  Consolidated revenues for
the  first  nine  months  of 2004 were $501,580,000, a 9% increase compared with
$461,446,000  for  the  first  nine  months  of  2003.

Marine  transportation  revenues and operating income for the 2004 third quarter
increased  14%  and  25%, respectively, compared with the third quarter of 2003.
For  the first nine months of 2004, marine transportation revenues and operating
income  increased  10%  and 20%, respectively, when compared with the first nine
months of 2003.  The favorable results reflected strong petrochemical volumes as
customers  continued  to  run  their  plants


                                  Page 1 of 7

at  high  utilization  rates.  Black  oil  volumes  were  strong, driven by high
volumes of heavy refinery residual oil by-products, and refined products volumes
reflected typical Midwest summer demand.  Agricultural chemical volumes remained
weak  despite  low  Midwest  inventory  levels.

The  marine transportation 2004 third quarter and first nine months results were
impacted  by  the  following:

     -    HURRICANE  IVAN - Made landfall near Gulf Shores, Alabama on September
          16 and resulted in customer petrochemical plant and refinery closures,
          diversion  of  marine  equipment  and closure of the Gulf Intracoastal
          Waterway  along the projected path of the storm. The initial projected
          path  was  from  New  Orleans to the Florida panhandle. Hurricane Ivan
          impacted  the  inland  marine operations, as well as the operations of
          the  35%  owned  offshore partnership with a Florida utility, lowering
          Kirby's  results  by  an  estimated  $.02  per  share.

     -    DIESEL  FUEL  -  The  average price per gallon of diesel fuel consumed
          increased  to $1.16 for the 2004 third quarter compared with $1.00 for
          the  first  six  months  of  2004.  Higher fuel prices lowered Kirby's
          results  by  an  estimated  $.01  per  share.

     -    MCALPINE LOCK CLOSURE - Major lock on the Ohio River closed for repair
          for  12  days  in  August,  stopping  all  waterborne  traffic  with a
          destination  upriver of Louisville, Kentucky, including Cincinnati and
          Pittsburgh.  The  closure  of  the  lock lowered Kirby's results by an
          estimated  $.01  per  share,  less  than  initially  forecasted.

     -    SALE  OF  LIQUID PRODUCTS TERMINAL - Sale of the 50% owned Shreveport,
          La.  terminal  resulting  in  a third quarter 2004 loss on the sale of
          $.015  per  share.  This  loss  is  reflected in equity in earnings of
          marine  affiliates.

The  diesel  engine  services segment's third quarter 2004 revenues were in line
with  the  2003  third  quarter  revenues.  Operating  income  improved  by  7%,
principally  from  increased sales of higher margin power generation parts.  The
segment's  Midwest  dry  cargo  river  market  was  enhanced with the April 2004
purchase  of  the diesel engine services operations of Walker Paducah Corp.  The
segment's  power  generation market benefited from direct parts sales to a major
power customer, while the rail market benefited from overall strong direct parts
sales.  The  Gulf  Coast  offshore  oil  service market, and East Coast and West
Coast  marine  markets remained weak, thereby negatively affecting the segment's
2004  third  quarter  results.

Equity in earnings of marine affiliates for the 2004 third quarter was a loss of
$782,000,  and  included  the  loss on the sale of the terminal and the negative
impacts  on  the  Company's 35% owned offshore partnership from Hurricanes Ivan,
Frances  and  Jeanne.

Joe  Pyne,  Kirby's  President  and Chief Executive Officer, commented, "Despite
some  challenges  in  the  third  quarter with respect to hurricanes, fuel, lock
closures and the sale of the terminal, business levels allowed us to continue to
perform  well.  Had  it  not  been


                                  Page 2 of 7

for  these  challenges, we would have been comfortably above the high end of our
forecasted  range.  We  are forecasting net earnings for the 2004 fourth quarter
in  the  $.50 to $.54 per share range.  This guidance compares with net earnings
of $.45 per share reported for the 2003 fourth quarter.  Our 2004 fourth quarter
guidance  range  is  based  on  firm petrochemical and black oil volumes, normal
winter upriver refined products volumes, stronger imported agricultural chemical
volumes  and  increased  delay  days  resulting  from anticipated winter weather
conditions."

Mr.  Pyne  further  commented,  "For  the  2004 year, Kirby's earnings per share
guidance  is $1.94 to $1.98.  This guidance compares with 2003 year earnings per
share  of  $1.67.  Capital spending guidance for 2004 has been revised to $90 to
$93 million from $85 to $90 million and includes approximately $42.5 million for
the  construction  of  16 new 30,000 barrel petrochemical tank barges and 10 new
30,000  barrel  black  oil tank barges.  The increased capital spending guidance
reflects higher steel prices, progress payments on barges scheduled for delivery
in  2005  and  the  timing  of  capital  upgrades  on  existing  equipment."

This  earnings press release includes marine transportation performance measures
for  both  the  2004  and  2003  third  quarters  and  first  nine  months.  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 9:00 a.m. central time tomorrow, Thursday,
October  28,  2004, to discuss the 2004 third quarter and first nine months, and
the  outlook  for  the  2004  fourth quarter and full year.  The conference call
number  is  888-328-2514 for domestic callers and 706-679-3262 for international
callers.  The  leader's  name  is  Steve  Holcomb.  An  audio  playback  will be
available  at  approximately  11:00 a.m. central time on October 29 through 6:00
p.m.  on Friday, November 26, 2004, by dialing 800-642-1687 for domestic callers
and  706-645-9291  for  international  callers.  The  conference  ID  number  is
1755171.  The  conference call can also be accessed by visiting Kirby's homepage
at http://www.kirbycorp.com/ or at http://audioevent.mshow.com/191510.  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 third quarters and first nine months 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


                                  Page 3 of 7

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 timing, magnitude
and  the  number  of  acquisitions  made by Kirby.  A listing 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, OCTOBER 28, 2004
TIME:     9:00 A.M. CENTRAL TIME
U.S.:     888-328-2514
INT'L:    706-679-3262
LEADER:   STEVE HOLCOMB
PASSCODE: KIRBY
WEBCAST:  HTTP://WWW.KIRBYCORP.COM/ OR HTTP://AUDIOEVENT.MSHOW.COM/191510
          -------------------------    ----------------------------------


                                  Page 4 of 7

A summary of the results for the third quarter and first nine months follows:



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

                                                          THIRD QUARTER          NINE MONTHS
                                                     ---------------------  ---------------------
                                                        2004       2003        2004       2003
                                                     ----------  ---------  ----------  ---------
                                                  (unaudited, $ in thousands except per share amounts)
                                                                            
Revenues:
  Marine transportation . . . . . . . . . . . . . .  $ 153,114   $134,396   $ 437,672   $396,617
  Diesel engine services  . . . . . . . . . . . . .     20,275     20,111      63,908     64,829
                                                     ----------  ---------  ----------  ---------
                                                       173,389    154,507     501,580    461,446
                                                     ----------  ---------  ----------  ---------
Costs and expenses:
  Costs of sales and operating expenses . . . . . .    108,690     98,800     320,008    300,804
  Selling, general and administrative . . . . . . .     21,331     18,069      60,775     54,381
  Taxes, other than on income . . . . . . . . . . .      3,398      3,385      10,800      9,921
  Depreciation and other amortization . . . . . . .     14,015     13,369      41,403     38,495
  Loss (gain) on disposition of assets  . . . . . .         43        (71)        241         62
                                                     ----------  ---------  ----------  ---------
                                                       147,477    133,552     433,227    403,663
                                                     ----------  ---------  ----------  ---------

      Operating income  . . . . . . . . . . . . . .     25,912     20,955      68,353     57,783
  Equity in earnings (loss) of marine affiliates  .       (782)     1,022         534      2,209
  Other expense . . . . . . . . . . . . . . . . . .       (415)      (134)       (737)      (736)
  Interest expense  . . . . . . . . . . . . . . . .     (3,344)    (3,761)    (10,008)   (11,082)
                                                     ----------  ---------  ----------  ---------

    Earnings before taxes on income . . . . . . . .     21,371     18,082      58,142     48,174
  Provision for taxes on income . . . . . . . . . .     (8,121)    (6,871)    (22,094)   (18,306)
                                                     ----------  ---------  ----------  ---------

    Net earnings  . . . . . . . . . . . . . . . . .  $  13,250   $ 11,211   $  36,048   $ 29,868
                                                     ==========  =========  ==========  =========

Net earnings per share of common stock:
  Basic . . . . . . . . . . . . . . . . . . . . . .  $     .54   $    .46   $    1.48   $   1.24
  Diluted . . . . . . . . . . . . . . . . . . . . .  $     .53   $    .46   $    1.44   $   1.22
Common stock outstanding (in thousands):
  Basic . . . . . . . . . . . . . . . . . . . . . .     24,507     24,166      24,435     24,112
  Diluted . . . . . . . . . . . . . . . . . . . . .     25,190     24,545      25,066     24,429

                               CONDENSED CONSOLIDATED FINANCIAL INFORMATION
                               --------------------------------------------
                                                          THIRD QUARTER          NINE MONTHS
                                                     ---------------------  ---------------------
                                                        2004       2003        2004       2003
                                                     ----------  ---------  ----------  ---------
                                                 (UNAUDITED, $IN THOUSANDS EXCEPT PER SHARE AMOUNTS)
EBITDA:  (1)
  Net earnings  . . . . . . . . . . . . . . . . . .  $  13,250   $ 11,211   $  36,048   $ 29,868
  Interest expense  . . . . . . . . . . . . . . . .      3,344      3,761      10,008     11,082
  Provision for taxes on income . . . . . . . . . .      8,121      6,871      22,094     18,306
  Depreciation and other amortization . . . . . . .     14,015     13,369      41,403     38,495
                                                     ----------  ---------  ----------  ---------
                                                     $  38,730   $ 35,212   $ 109,553   $ 97,751
                                                     ==========  =========  ==========  =========

EBITDA per share - diluted (1)  . . . . . . . . . .  $    1.54   $   1.43   $    4.37   $   4.00
Capital expenditures  . . . . . . . . . . . . . . .  $  19,750   $ 14,464   $  75,810   $ 52,187
Acquisitions of businesses and marine equipment . .  $       -   $      -   $  11,085   $ 37,816
                                                                                 SEPTEMBER 30,
                                                                            ---------------------
                                                                               2004       2003
                                                                            ----------  ---------
                                                                          (UNAUDITED, $IN THOUSANDS)
Long-term debt, including current portion . . . . . . . . . . . . . . .     $ 251,397   $270,049
Stockholders' equity  . . . . . . . . . . . . . . . . . . . . . . . . .     $ 414,634   $356,590
Debt to capitalization ratio  . . . . . . . . . . . . . . . . . . . . .          37.7%      43.1%



                                  Page 5 of 7



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

                                                         THIRD QUARTER                NINE MONTHS
                                                 -----------------------------  ----------------------
                                                      2004           2003          2004        2003
                                                 --------------  -------------  ----------  ----------
                                                               (UNAUDITED, $IN THOUSANDS)
                                                                                
Marine transportation revenues  . . . . . . .    $     153,114   $    134,396   $ 437,672   $ 396,617
                                                 --------------  -------------  ----------  ----------

Costs and expenses:
  Costs of sales and operating expenses . . .           93,579         83,492     272,626     251,713
  Selling, general and administrative . . . .           16,887         14,216      47,619      42,836
  Taxes, other than on income . . . . . . . .            3,293          3,206      10,475       9,450
  Depreciation and other amortization . . . .           13,286         12,654      39,148      36,304
                                                 --------------  -------------  ----------  ----------
                                                       127,045        113,568     369,868     340,303
                                                 --------------  -------------  ----------  ----------

    Operating income  . . . . . . . . . . . .    $      26,069   $     20,828   $  67,804   $  56,314
                                                 ==============  =============  ==========  ==========

    Operating margins . . . . . . . . . . . .             17.0%          15.5%       15.5%       14.2%
                                                 ==============  =============  ==========  ==========


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

                                                         THIRD QUARTER                NINE MONTHS
                                                 -----------------------------  ----------------------
                                                      2004           2003          2004        2003
                                                 --------------  -------------  ----------  ----------
                                                                (UNAUDITED, $IN THOUSANDS)

Diesel engine services revenues . . . . . . .    $      20,275   $     20,111   $  63,908   $  64,829
                                                 --------------  -------------  ----------  ----------

Costs and expenses:
  Costs of sales and operating expenses . . .           15,102         15,246      47,269      48,951
  Selling, general and administrative . . . .            3,041          2,859       9,092       8,607
  Taxes, other than income  . . . . . . . . .               95             81         268         241
  Depreciation and amortization . . . . . . .              264            272         883         788
                                                 --------------  -------------  ----------  ----------
                                                        18,502         18,458      57,512      58,587
                                                 --------------  -------------  ----------  ----------

    Operating income  . . . . . . . . . . . .    $       1,773   $      1,653   $   6,396   $   6,242
                                                 ==============  =============  ==========  ==========

    Operating margins . . . . . . . . . . . .              8.7%           8.2%       10.0%        9.6%
                                                 ==============  =============  ==========  ==========

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

                                                         THIRD QUARTER                NINE MONTHS
                                                 -----------------------------  ----------------------
                                                      2004           2003          2004        2003
                                                 --------------  -------------  ----------  ----------
                                                                 (UNAUDITED, $IN THOUSANDS)

General corporate expenses  . . . . . . . . .    $       1,887   $      1,597   $   5,606   $   4,711
                                                 ==============  =============  ==========  ==========
Loss (gain) on disposition of assets  . . . .    $          43   $        (71)  $     241   $      62
                                                 ==============  =============  ==========  ==========


                                  Page 6 of 7

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

                                                         THIRD QUARTER                NINE MONTHS
                                                 -----------------------------  ----------------------
                                                      2004           2003          2004        2003
                                                 --------------  -------------  ----------  ----------
Ton Miles (in millions)  (2) . . . . . . . . .           4,238          4,021      12,294      11,467
Revenue/Ton Mile (cents/tm) (3)  . . . . . . .             3.6            3.3         3.6         3.5
Towboats operated (average)  (4) . . . . . . .             237            222         235         226
Delay Days  (5). . . . . . . . . . . . . . . .           1,658          1,001       5,839       4,852
Average cost per gallon of fuel consumed . . .   $        1.16   $        .86   $    1.04   $     .89
Tank barges:
  Active . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .        888         882
  Inactive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .         49          70
Barrel capacities (in millions):
  Active . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .       16.4        16.0
  Inactive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .         .9         1.3
<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: Third quarter
     2004  revenues  of  $153,114,000  divided  by 4,238,000,000 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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