[LETTERHEAD OF MAPLES AND CALDER]


Carnival plc
5 Gainsford Street,
London, SE1 2NE
United Kingdom

Carnival Corporation
3655 N.W. 87th Avenue
Miami, Florida 33178-2428
U.S.A.


9th March 2006


Dear Sirs

P&O PRINCESS SPECIAL VOTING TRUST

We have acted as Cayman Islands counsel to The Law Debenture Trust  Corporation
(Cayman) Limited (the "Trustee") in connection with:

(i)      the voting trust deed (the "TRUST DEED") dated 17th April, 2003 by and
         between  Carnival  Corporation,  a Panamanian  corporation  ("CARNIVAL
         CORPORATION")  and the Trustee,  establishing the P&O Princess Special
         Voting Trust, a Cayman Islands law trust (the "TRUST") and pursuant to
         which shares of beneficial  interest in the Trust (the "TRUST SHARES")
         have been issued; and

(ii)     the registration  statement on Form S-3 ASR,  including all amendments
         or  supplements  thereto  ("FORM S-3"),  filed with the Securities and
         Exchange  Commission  on 9th March 2006 by  Carnival  Corporation  and
         Carnival plc, a public limited company  incorporated under the laws of
         England and Wales ("CARNIVAL PLC"),  under the Securities Act of 1933,
         as amended  (the  "REGISTRATION  STATEMENT")  relating to, among other
         things,  (i) Carnival  Corporation's  senior debt securities  ("SENIOR
         DEBT SECURITIES") and subordinated debt securities ("SUBORDINATED DEBT
         SECURITIES" and,  together with the Senior Debt Securities,  the "DEBT
         SECURITIES"),  consisting of notes,  debentures and/or other evidences
         of  indebtedness  denominated  in United  States  dollars or any other
         currency, (ii) Carnival Corporation's Warrants, (iii) shares of Common
         Stock  (including  shares to be  issued  upon  conversion  of the Debt
         Securities)  of Carnival  Corporation,  par value


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         $0.01 per share (the "CARNIVAL  CORPORATION  COMMON STOCK"),  and (iv)
         shares  of  Preferred  Stock  (including  shares  to  be  issued  upon
         conversion of the Debt Securities) of Carnival Corporation,  par value
         $0.01 per share, (v) trust shares of beneficial interest in the Trust,
         which Trust Shares are paired with the shares of Carnival  Corporation
         Common  Stock  on a  one-for-one  basis  and  represent  a  beneficial
         interest  in a  special  voting  share  of  Carnival  plc,  and (vi) a
         guarantee  by  Carnival  plc  of  Carnival  Corporation's  contractual
         monetary  obligations  under  the some or all of the  Debt  Securities
         pursuant  to the  Carnival  plc  Deed of  Guarantee  between  Carnival
         Corporation and Carnival plc, dated as of April 17 2003.

We are furnishing this opinion as Exhibit 5.4 to the Registration Statement.

1        DOCUMENTS REVIEWED

For the purposes of this opinion,  we have reviewed only  originals,  copies or
final drafts of the following documents:

1.1      the Trust Deed; and

1.2      the Form S-3.

2        ASSUMPTIONS

The  following  opinion is given only as to,  and based on,  circumstances  and
matters  of fact  existing  and known to us on the date of this  opinion.  This
opinion  only relates to the laws of the Cayman  Islands  which are in force on
the date of this  opinion.  We have also relied on the  following  assumptions,
which we have not independently verified.

2.1      The Trust Deed has been  authorised and duly executed and delivered by
         or on behalf of Carnival  Corporation in accordance  with all relevant
         laws.

2.2      The Trust  Deed is  legal,  valid,  binding  and  enforceable  against
         Carnival  Corporation  and the  Trustee in  accordance  with its terms
         under all relevant laws other than the laws of the Cayman Islands.

2.3      Copy documents, conformed copies or drafts of documents provided to us
         are true and  complete  copies  of,  or in the  final  forms  of,  the
         originals.

2.4      All signatures, initials and seals are genuine.

2.5      The power,  authority and legal right of Carnival  Corporation and the
         Trustee  under  all  relevant  laws and  regulations  to  enter  into,
         execute,  deliver and perform their respective  obligations  under the
         Trust  Deed  (other  than the  Trustee  under  the laws of the  Cayman
         Islands).

2.6      There is nothing  under any law (other than Cayman  Islands law) which
         would or might affect the opinions in this  letter.  Specifically,  we
         have made no  independent  investigation  of the laws of  England  and
         Wales, the Republic of Panama or the States of New York or Florida.


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3        OPINIONS

Based upon the  foregoing and subject to the  qualifications  set out below and
having regard to such legal  considerations as we deem relevant,  we are of the
opinion that:

3.1      The Trust is duly established and constitutes a validly existing trust
         under the laws of the Cayman Islands.

3.2      The Trust Shares when issued as  contemplated  under the  Registration
         Statement will be duly  authorised for issuance in accordance with the
         provisions  of the Trust Deed and, on the relevant  entries being made
         in the  Share  Register,  the Trust  Shares  will  constitute  validly
         issued,  fully paid and non-assessable Trust Shares and, in respect of
         such  Trust  Shares,  the  registered  holders  will  have the  rights
         attributable thereto as set forth in the Trust Deed.

4        QUALIFICATIONS

The opinions expressed above are subject to the following qualifications:

4.1      Nominal  Cayman  Islands stamp duty of CI$40 (US$48) may be payable if
         the  original  Trust  Deed is  brought  to or  executed  in the Cayman
         Islands.

4.2      The obligations of the Trustee may be subject to restrictions pursuant
         to  United  Nations  sanctions  as  implemented  under the laws of the
         Cayman Islands.

4.3      All the beneficiaries under the trust may together terminate the Trust
         notwithstanding anything to the contrary in the Trust Deed.

We  express no view as to whether  the terms of the Trust  Deed  represent  the
intentions   of  the   parties   and  make  no  comment   with  regard  to  the
representations which may be made by Carnival Corporation or the Trustee.

This  opinion is given today and may not be relied on at any later  date.  This
opinion  is  given  for  your  benefit  for the  purposes  of the  Registration
Statement to be filed under the Securities Act of 1933, as amended.

We hereby  consent to filing of this opinion as an exhibit to the  Registration
Statement.  In giving  consent,  we do not admit that we are in the category of
persons whose consent is required under the Securities Act of 1933, as amended,
or the Rules and Regulations of the Commission thereunder.


Yours faithfully,


/s/ MAPLES and CALDER
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MAPLES and CALDER