Exhibit 32.3

      In connection with the Quarterly Report on Form 10-Q for the quarter ended
August 31, 2004 as filed by Carnival Corporation with the Securities and
Exchange Commission on the date hereof (the "Report"), I certify pursuant to 18
U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley
Act of 2002, that:

(1)   The Report fully complies with the requirements of Section 13(a) or 15(d)
      of the Securities Exchange Act of 1934; and

(2)   The information contained in the Report fairly presents, in all material
      respects, the financial condition and results of operations of Carnival
      Corporation.

Date: October 7, 2004


By: /s/ Gerald R. Cahill
    --------------------
Gerald R. Cahill
Executive Vice President and Chief
Financial and Accounting Officer


                                       31