Exhibit 32.4

      In connection with the Annual Report on Form 10-K for the year ended
November 30, 2004 as filed by Carnival plc 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
      plc.

Date: February 14, 2005

                                   By: /s/ Micky Arison
                                      -----------------
                                   Micky Arison
                                   Chairman of the Board of Directors
                                   and Chief Executive Officer