Filed pursuant to Rule 424(b)(3)
Registration No. 333-62950

This prospectus supplement No. 6 supplements and amends the prospectus dated October 4, 2001, as amended and supplemented by prospectus supplement No. 1 dated October 18, 2001, prospectus supplement No. 2 dated November 1, 2001, prospectus supplement No. 3 dated November 16, 2001, prospectus supplement No. 4 dated December 21, 2001 and prospectus supplement No. 5 dated January 18, 2002, relating to our 2% convertible senior debentures due 2021 and shares of common stock issuable upon conversion of the debentures.

The table on pages 18 through 21 of the prospectus sets forth information with respect to the selling securityholders and the respective amounts of debentures beneficially owned by each selling securityholder that may be offered pursuant to the prospectus as amended and supplemented by prospectus supplement No. 1 dated October 18, 2001, prospectus supplement No. 2 dated November 1, 2001, prospectus supplement No. 3 dated November 16, 2001, prospectus supplement No. 4 dated December 21, 2001 and prospectus supplement No. 5 dated January 18, 2002. This prospectus supplement amends that table by adding to it the items set forth below.

The prospectus dated October 4, 2001, as amended and supplemented by prospectus supplement No. 1 dated October 18, 2001, prospectus supplement No. 2 dated November 1, 2001, prospectus supplement No. 3 dated November 16, 2001, and prospectus supplement No. 4 dated December 21, 2001, prospectus supplement No. 5 dated January 18, 2002 and this prospectus supplement No. 6, constitutes the prospectus required to be delivered by Section 5(b) of the Securities Act of 1933, as amended, with respect to offers and sales of the debentures and the common stock issuable upon conversion of the debentures.

Our common stock is traded on the New York Stock Exchange under the symbol CCL. On February 7, 2002, the last reported sales price of the common stock was $25.67 per share. There is no public market for the debentures, and we do not intend to apply for their listing on any exchange or to seek approval for their quotation through any automated quotation system.

Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or passed upon the adequacy of this prospectus supplement. Any representation to the contrary is a criminal offense.

The date of this prospectus supplement is February 8, 2002.

The prospectus dated October 4, 2001, as amended and supplemented by prospectus supplement No. 1 dated October 18, 2001, prospectus supplement No. 2 dated November 1, 2001, prospectus supplement No. 3 dated November 16, 2001, prospectus supplement No. 4 dated December 21, 2001 and prospectus supplement No. 5 dated January 18, 2002, relating to the offer for resale of up to $600,000,000 aggregate principal amount of debentures and shares of common stock issuable upon conversion of the debentures is amended to replace the first paragraph and the table under the heading "Selling Securityholders" on page 18 with the information in the following paragraph and table. We may further amend or supplement this table from time to time if necessary.

The following table provides, as of February 8, 2002, the name of each selling securityholder, the principal amount of debentures held by such selling securityholder, the number of shares of common stock owned by such securityholder prior to its purchase of debentures and the common stock issuable upon conversion of the debentures (based upon the initial conversion price). This information has been obtained from the selling securityholders.