Document:

<PAGE>
                                                                  EXHIBIT 10.140

                                 [JPMorgan LOGO]

JPMORGAN CHASE BANK
Global Derivative Operations
4 Metrotech CENTER, 17th Floor
Brooklyn, New York 11245

                         INTEREST RATE SWAP CONFIRMATION
                              AMENDED AND RESTATED

TO   : NELNET INCORPORATED
       LINCOLN NE
       USA
       ATTN: Hannah Smitterberg
ATTN : Swap Operations
FAX  : 1480-947-5452
DATE : 24 October 2003
RE   : Transaction Reference No. 0002320282 / 66675214/66675215

         The purpose of this letter agreement is to confirm the terms and
conditions of the Transaction entered into between us on the Trade Date below.
It constitutes a "Confirmation" as referred to in the ISDA Master Agreement
described below.

         The definitions and provisions contained in the 2000 ISDA Definitions
as published by the International Swaps and Derivatives Association, Inc.
("ISDA") are incorporated into this Confirmation. In the event of any
inconsistency between those definitions and provisions and this Confirmation,
this Confirmation will govern.

     1.  This Confirmation supplements, forms part of, and is subject to, the
         Derivatives Trading Arrangement dated as of 20 May 2002, as amended
         and supplemented from time to time (the "Agreement"), between JPMorgan
         Chase Bank ("JPMorgan") and Nelnet Incorporated ("Counterparty"). All
         provisions contained in the Agreement govern this Confirmation except
         as expressly modified below.

     2.  The terms of the particular Transaction to which this Confirmation
         relates are as follows:

         NOTIONAL AMOUNT:     USD 150,000,000.00

         TRADE DATE:          1 October 2003

         EFFECTIVE DATE:      2 October 2003

         TERMINATION DATE:    6 September 2005, subject to adjustment in
                              accordance with the Following Business Day
                              Convention.

                                                                     Page 1 of 5

<PAGE>

Confirmation - Swap Transaction                JPMorgan Ref: 0002320282/66675214

FIXED AMOUNTS:

FIXED RATE PAYER:             COUNTERPARTY

FIXED RATE PAYER
PAYMENT DATES:                28 Calendar days following the Effective Date
                              commencing on 2 OCTOBER 2003, and on each day
                              thereafter that is 28 Calendar days following the
                              previous Period End Date subject to adjustment in
                              accordance with the Following Business Day
                              Convention.

FIXED RATE:                   1.683750 percent

FIXED RATE
DAY COUNT FRACTION:           Actual/360

BUSINESS DAYS:                New York

FLOATING AMOUNTS:

FLOATING RATE PAYER:          JPMORGAN

FLOATING RATE PAYER
PAYMENT DATES:                On each Fixed Rate Payer Payment Date.

FLOATING RATE FOR INITIAL
CALCULATION PERIOD:           1.120000 Percent

FLOATING RATE OPTION:         USD - LIBOR - BBA

SPREAD:                       None

DESIGNATED MATURITY:          1 Month

RESET DATES:                  The first day of each Calculation Period.

COMPOUNDING:                  Not Applicable

FLOATING RATE
DAY COUNT FRACTION:           Actual/360

BUSINESS DAYS:                New York

CALCULATION AGENT:            JPMorgan, unless otherwise specified in the
                              Agreement

                                                                     Page 2 of 5

<PAGE>

Confirmation - Swap Transaction                JPMorgan Ref: 0002320282/66675214

     3. ACCOUNT DETAILS

          PAYMENTS TO JPMORGAN:

                             JPMORGAN CHASE BANK, NEW YORK,
                             JPMORGAN, NY ABA# 021000021, A/C# 900-900-1364

          PAYMENTS TO COUNTERPARTY:
                             To be Advised

     4. OFFICE, ADDRESS AND TELEPHONE NUMBER FOR NOTICES IN CONNECTION WITH
        THIS TRANSACTION

                       (a) COUNTERPARTY: its Office in
                             LINCOLN NE
                             USA
                             ATTN: JULIE HEYEN/NANCY HARMS
                             FAX: 402-458-2399

                       (b) JPMORGAN: its head Office in
                             New York c/o Global Derivative Operations
                             4 Metrotech Center, 17th Floor
                             Brooklyn, New York 11245

     5. DOCUMENTS TO BE DELIVERED

        Each party shall deliver to die other, at the time of its execution of
        this Confirmation, evidence of the incumbency and specimen signature of
        the person(s) executing this Confirmation, unless such evidence has been
        previously supplied and remains true and in effect.

     6. RELATIONSHIP BETWEEN PARTIES

        Each party will be deemed to represent to the other party on the date on
        which it enters into a Transaction that (absent a written agreement
        between the parties that expressly imposes affirmative obligations to
        the contrary for that Transaction): -

        (a) Non-Reliance. It is acting for its own account, and it has made its
        own independent decisions to enter into that Transaction and as to
        whether that Transaction is appropriate or proper for it based upon its
        own judgement and upon advice from such advisers as it has deemed
        necessary. It is not relying on any communication (written or oral) of
        the other party as investment advice or as a recommendation to enter
        into that Transaction; it being understood that information and
        explanations related to the terms and conditions of a Transaction shall
        not be considered investment advice or a recommendation to enter into
        that Transaction. No communication (written or oral) received from the
        other party shall be deemed to be an assurance or guarantee as to the
        expected results of that Transaction.

                                                                     Page 3 of 5

<PAGE>

Confirmation - Swap Transaction                JPMorgan Ref: 0002320282/66675214

        (b) Assessment and Understanding. It is capable of assessing the merits
        of and understanding (on its own behalf or through independent
        professional advice), and understands and accepts, the terms, conditions
        and risks of that Transaction. It is capable of assuming, and assumes
        the risks of that Transaction.

        (c) Status of Parties. The other party is not acting as a fiduciary for
        or an adviser to it in respect of that Transaction.

        Please confirm that the foregoing correctly sets forth the terms of our
        agreement by executing a copy of this Confirmation and returning it to
        us.

                                                 Yours sincerely,

                                                 JPMORGAN CHASE BANK

                                                 By: /s/ DEBORAH HOOPER
                                                    -----------------------
                                                 Name: DEBORAH HOOPER
                                                 Title: VICE PRESIDENT

        Confirmed as of the date first
        above written:

        NELNET INCORPORATED

        By: /s/ Terry J. Heimes
           --------------------------

        Name:  Terry J. Heimes
              _______________________

        Title: CFO
               ______________________
        mng/(a)kw

                                                                     Page 4 of 5

<PAGE>

Confirmation - Swap Transaction                JPMorgan Ref: 0002320282/66675214

                          JPMORGAN CHASE BANK, NEW YORK
          C/O 4 METROTECH CENTER, 17TH FLOOR, BROOKLYN, NEW YORK 11245
                    GLOBAL DERIVATIVE OPERATIONS CONTACT LIST

                                  CONFIRMATIONS

SINGLE AND CROSS CURRENCY SWAPS, FRA'S AND INTEREST RATE OPTIONS

                         TELEPHONE                    FACSIMILE

Return executed confirmations / Send your confirmations to:

                                                    (718) 242 9260 / 9262 / 9263

Discrepancies with Confirm:               (718) 242 7294 / 7296 / 3100
                                          (718) 242 9260 / 9262 / 9263

If you did not receive our Confirmation:  (718) 242 3313 / 3089 / 3323
                                          (718) 242 9260 / 9262 / 9263

                               RATE RESET ADVICES
       (SINGLE AND CROSS CURRENCY SWAPS, FRA'S AND INTEREST RATE OPTIONS)

JPMORGAN CHASE BANK, NEW YORK BRANCH

If you did not receive a
Rate Reset Advice:                   (718)242 3121 / 7359      (718) 242 4206

                                    PAYMENTS
(SINGLE AND CROSS CURRENCY SWAPS, FRA'S AND INTEREST RATE OPTIONS)

JPMORGAN CHASE BANK, NEW YORK BRANCH

Pre-Settlement:                (718) 242 3187 / 2827 / 3098       (718) 242 5826
Customer Service:              (718) 242 7294 / 7296              (718) 242 4216
Email: ny.pre.customer.service@jpmorgan.com
Email: ny.post.customer.service@jpmorgan.com

                           MARK-TO-MARKET (VALUATIONS)
Kerri Kowing            (212) 834 7302
Anthony Mikulski        (212) 834 7024

JPMorgan Chase Bank, New York S.W.I.F.T BIC (CHASUS33) Telex 420120 CMB UW

                                                                     Page 5 of 5<PAGE>
                                                                  EXHIBIT 10.1.1

                                                                  EXECUTION COPY

                             AMENDMENT NO. 1 TO THE
                      AMENDED AND RESTATED CREDIT AGREEMENT

                                                  Dated as of September 30, 2003

            AMENDMENT NO. 1 TO THE AMENDED AND RESTATED CREDIT AGREEMENT (this
"Amendment") among Crowley Maritime Corporation, a Delaware corporation (the
"Borrower"), the banks, financial institutions and other institutional lenders
party to the Credit Agreement referred to below (collectively, the "Lenders"),
Citibank, N.A., as Issuing Bank and as Swing Line Bank, and Citicorp USA, Inc.,
as agent (together with any successor agent appointed pursuant to Article VIII
of the Credit Agreement referred to below, the "Administrative Agent") for the
Lender Parties and as collateral agent (together with any successor collateral
agent appointed pursuant to Article VIII of the Credit Agreement referred to
below, the "Collateral Agent").

            PRELIMINARY STATEMENTS:

            (1)               The Borrower, the Lenders and the Administrative
                              Agent have entered into an Amended and Restated
                              Credit Agreement dated as of November 2, 2001 (as
                              amended, supplemented or otherwise modified
                              through the date hereof, the "Credit Agreement").
                              Capitalized terms not otherwise defined in this
                              Amendment have the same meanings as specified in
                              the Credit Agreement.

            (2)               The Borrower has requested that the Lenders agree
                              to amend the Credit Agreement in order to change
                              the Termination Date from October 31, 2004 to
                              January 1, 2005.

            (3)               The Lenders are, on the terms and conditions
                              stated below, willing to grant the request of the
                              Borrower and the Borrower and the Lenders have
                              agreed to amend the Credit Agreement as
                              hereinafter set forth.

            SECTION 1. Amendment to the Credit Agreement. Section 1.01 of the
Credit Agreement is, on the Effective Date (as defined in Section 2 hereof),
hereby amended by deleting the date "October 31, 2004" in clause (ii) of the
definition of "Termination Date" and replacing it with the new date "January 1,
2005".
<PAGE>
            SECTION 2. Conditions of Effectiveness. This Amendment shall become
effective on the first date (the "Effective Date") on which, and only if, each
of the following conditions precedent shall have been satisfied:

            (a) The Administrative Agent shall have received counterparts of
      this Amendment executed by the Borrower and the Lenders or, as to any of
      the Lenders, advice satisfactory to the Administrative Agent that such
      Lender has executed this Amendment.

            (b) The Administrative Agent shall have received the Consent
      attached hereto executed by the Borrower and each of the other Loan
      Parties.

            (c) The representations and warranties contained in each of the Loan
      Documents shall be correct in all material respects on and as of the
      Effective Date, after giving effect to this Amendment, as though made on
      and as of such date (except for any such representation and warranty that,
      by its terms, refers to a specific date other than the Effective Date, in
      which case as of such specific date).

            (d) No event shall have occurred and be continuing or shall result
      from the effectiveness of this Amendment that constitutes a Default.

The effectiveness of this Amendment is further conditioned upon the accuracy of
all of the factual matters described herein. This Amendment is subject to the
provisions of Section 9.01 of the Credit Agreement.

            SECTION 3. Reference to and Effect on the Loan Documents. (a) On and
after the Effective Date, each reference in the Credit Agreement to "this
Agreement", "hereunder", "hereof" or words of like import referring to the
Credit Agreement, and each reference in the Notes and each of the other Loan
Documents to "the Credit Agreement", "thereunder", "thereof" or words of like
import referring to the Credit Agreement, shall mean and be a reference to the
Credit Agreement, as amended and otherwise modified by this Amendment.

            (b) The Credit Agreement and each of the other Loan Documents, as
specifically amended and otherwise modified by this Amendment, are and shall
continue to be in full force and effect and are hereby in all respects ratified
and confirmed. Without limiting the generality of the foregoing, the Collateral
Documents and all of the Collateral described therein do and shall continue to
secure the payment of all Obligations of the Loan Parties under the Loan
Documents, in each case as amended and otherwise modified by this Amendment.

            (c) The execution, delivery and effectiveness of this Amendment
shall not, except as expressly provided herein, operate as a waiver of any
right, power or remedy of any Lender or the Administrative Agent under any of
the Loan Documents, nor constitute a waiver of any provision of any of the Loan
Documents.

            SECTION 4. Costs, Expenses. The Borrower agrees to pay on demand all
reasonable costs and expenses of the Administrative Agent in connection with the
preparation, execution, delivery and administration, modification and amendment
of this Amendment and the other instruments and documents to be delivered
hereunder (including, without limitation, the reasonable fees and expenses of
counsel for the Administrative Agent) in accordance with the terms of Section
9.04 of the Credit Agreement.

            SECTION 5. Execution in Counterparts. This Amendment may be executed
in any number of counterparts and by different parties hereto in separate
counterparts, each of which when so

                                       2
<PAGE>
executed shall be deemed to be an original and all of which taken together shall
constitute but one and the same agreement. Delivery of an executed counterpart
of a signature page to this Amendment by telecopier shall be effective as
delivery of a manually executed counterpart of this Amendment.

            SECTION 6. Governing Law. This Amendment shall be governed by, and
construed in accordance with, the laws of the State of New York.

                                       3
<PAGE>
            IN WITNESS WHEREOF, the parties hereto have caused this Amendment to
be executed by their respective officers thereunto duly authorized, as of the
date first above written.

                                    CROWLEY MARITIME CORPORATION, as Borrower

                                    By   /s/ Albert M. Marucco
                                      ------------------------------------------
                                      Title: Vice President and Treasurer

                                    CITICORP USA, INC., as Administrative Agent,
                                      as Collateral Agent and as Lender

                                    By   /s/ Robert Mallek
                                      ------------------------------------------
                                      Title: Director  New York Shipping &
                                             Logistics
<PAGE>
                                    Lender Parties

                                    CITIBANK, N.A., as Issuing Bank, as Swing
                                      Line Bank and as Lender

                                    By   /s/ Robert Mallek
                                      ------------------------------------------
                                      Title: Director, New York Shipping &
                                             Logistics

                                    NORDEA BANK NORGE ASA (f/k/a Christiania
                                    Bank OG Kreditkasse ASA), ACTING THROUGH ITS
                                    NEW YORK BRANCH, as Lender

                                    By   /s/ Martin Lunder
                                      ------------------------------------------
                                      Title: Senior Vice President

                                    By   /s/ Hans Chr. Kjelsrud
                                      ------------------------------------------
                                      Title: Senior Vice President

                                    DEN NORSKE BANK ASA, as Lender

                                    By   /s/ B. Henriksen
                                      ------------------------------------------
                                      Title: E.V.P.

                                    By   /s/ Nikolai A. Nachamkin
                                      ------------------------------------------
                                      Title: First Vice President

                                    HSH NORDBANK AG (f/k/a Landesbank Schleswig-
                                      Holstein Girozentrale), as Lender

                                    By   /s/ Oliver Hermanns
                                      ------------------------------------------
                                      Title: SVP

                                    By   /s/ Raymond Wills
                                      ------------------------------------------
                                      Title: SVP

                                    NEDSHIP BANK, N.V., as Lender

                                    By   /s/ Sybren Hoekstra
                                      ------------------------------------------
                                      Title: SVP

                                    By   /s/ Gorm Eikemo
                                      ------------------------------------------
                                      Title: AVP
<PAGE>
                                     CONSENT

                                                  Dated as of September 30, 2003

            Reference is made to (a) Amendment No. 1 to the Amended and Restated
Credit Agreement dated as of September 30, 2003 (the "Amendment"; capitalized
terms not otherwise defined herein being used herein as defined in the Amendment
and in the Credit Agreement referred to below), (b) the Amended and Restated
Credit Agreement dated as of November 2, 2001 (as amended by the Amendment and
as otherwise modified from time to time through the date hereof, the "Credit
Agreement") among Crowley Maritime Corporation, as Borrower, the Lender Parties
party thereto and Citicorp USA, Inc., as Administrative Agent for the Lender
Parties and as Collateral Agent, and (c) the other Loan Documents referred to
therein.

            The undersigned as parties to one or more of the Loan Documents,
each hereby consents to the execution, delivery and the performance of the
Amendment and agrees that:

            (A) each of the Loan Documents to which it is a party is, and shall
      continue to be, in full force and effect and is hereby in all respects
      ratified and confirmed on the Effective Date, except that, on and after
      the Effective Date, each reference to "the Credit Agreement",
      "thereunder", "thereof", "therein" or words of like import referring to
      the Credit Agreement shall mean and be a reference to the Credit
      Agreement, as amended and otherwise modified by the Amendment; and

            (B) as of the Effective Date, each Collateral Document to which it
      is a party and all of the Collateral of such Person described therein do,
      and shall continue to, secure the payment of all of the Secured
      Obligations.

            This Consent shall be governed by, and construed in accordance with,
the laws of the State of New York.

                  [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK]
<PAGE>
            Delivery of an executed counterpart of a signature page of this
Consent by telecopier shall be effective as the delivery of a manually executed
counterpart of this Consent.

                                    MARINE TRANSPORT CORPORATION

                                    By   /s/ Albert M. Marucco
                                      ------------------------------------------
                                      Title: Director, Treasurer

                                    CROWLEY PETROLEUM TRANSPORT, INC.

                                    By   /s/ Albert M. Marucco
                                      ------------------------------------------
                                      Title: Treasurer

                                    CROWLEY ALASKA, INC.
                                    CROWLEY LINER SERVICES, INC.
                                    CROWLEY LAUNCH AND TUGBOAT COMPANY
                                    CROWLEY MARINE SERVICES, INC.
                                    VESSEL MANAGEMENT SERVICES, INC.
                                    CROWLEY LOGISTICS, INC.

                                    By   /s/ Albert M. Marucco
                                      ------------------------------------------
                                      Title: Vice President and Treasurer

                                    JULIUS OWNER CORPORATION
                                    MARINE NAVIGATION COMPANY, INC.
                                    MARINE TRANSPORT MANAGEMENT, INC.
                                    MORMAC MARINE TRANSPORT II, INC.
                                    MARINE CHEMICAL CARRIERS COMPANY LLC
                                    OSWEGO SHIPPING CORPORATION
                                    BLUE COAST BAREBOAT COMPANY LLC
                                    FRANCES OWNER CORPORATION
                                    MARINE CHEMICAL NAVIGATION COMPANY LLC
                                    MARINE CHEMICAL STEAMSHIP COMPANY, INC.
                                    OMI CHALLENGER TRANSPORT, INC.

                                    By   /s/ Albert M. Marucco
                                      ------------------------------------------
                                      Title: Vice President, Assistant Treasurer
<PAGE>
                                    INTREPID BAREBOAT CORPORATION
                                    MARINE TRANSPORT LINES, INC.

                                    By   /s/ John Deisiderio
                                      ------------------------------------------
                                      Title: Director, Treasurer

                                    MORMAC MARINE ENTERPRISES, INC.

                                    By   /s/ John F. Morton
                                      ------------------------------------------
                                      Title: Director

                                    OSWEGO CORPORATION

                                    By   /s/ John F. Morton
                                      ------------------------------------------
                                      Title: Director, Treasurer

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