WASHINGTON, DC 20549

                                 SCHEDULE 13G
                                (Rule 13d-102)

                 FILED PURSUANT TO RULES 13d-1(b), (c) AND (d)
                              (Amendment No. __)

                                Brunswick Corp.
                               (Name of Issuer)

                       Class A-1 Preferred Certificates
                        (Title of Class of Securities)

                                 (CUSIP NUMBER)

                               December 31, 2005
            (Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule
is filed:

[X] Rule 13d-1(b)

[_] Rule 13d-1(c)

[_] Rule 13d-1(d)

The remainder of this cover page shall be filled out for a reporting person's
initial filing on this form with respect to the subject class of securities,
and for any subsequent amendment containing information which would alter
disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be
deemed to be "filed" for the purpose of Section 18 of the Securities Exchange
Act of 1934 or otherwise subject to the liabilities of that section of the Act
but shall be subject to all other provisions of the Act (however, see the

 1. Name of Reporting Persons:
    Claymore Securities Defined Portfolios Series 143

    I.R.S. Identification No. of Above Persons (Entities Only):
 2. Check the Appropriate Box if a Member of a Group

 3. SEC Use Only

 4. Citizenship or Place of Organization:

    Wichita, KS
              5.  Sole Voting Power:

 NUMBER OF    6.  Shared Voting Power:
BENEFICIALLY ------------------------------------------------------------------
  OWNED BY    7.  Sole Dispositive Power:
 REPORTING           83,829
   PERSON    ------------------------------------------------------------------
    WITH      8.  Shared Dispositive Power:

 9. Aggregate Amount Beneficially Owned by Each Reporting Person:

10. Check if the Aggregate Amount in Row 9 Excludes Certain Shares:

11. Percent of Class Represented by Amount in Row 9:

12. Type of Reporting Person:


Item 1(a).  Name of Issuer:

                  Brunswick Corp.

Item 1(b).  Address of Issuer's Principal Executive Offices:

                  ONE N. FIELD CT.
                  C/O KRISTIN COLEMAN
                  LAKE FOREST, IL 60045-4811

Item 2(a).  Name of Persons Filing:

                  Claymore Securities, Inc. as Sponsor of the Filing Entities

Item 2(b).  Address of Principal Business Office or, if None, Residence:

                  Claymore Securities, Inc.
                  2455 Corporate West Drive
                  Lisle, IL 60532

Item 2(c).  Citizenship:


Item 2(d).  Title of Class of Securities:

                  A-1 Preferred Certificates

Item 2(e).  CUSIP Number:


Item 3.     If this statement is filed pursuant to Rule 13d-1(b), or 13d-2(b)
            or (c), check whether the person filing is a:

            (a) [_] Broker or dealer registered under Section 15 of the
                    Exchange Act;

            (b) [_] Bank as defined in Section 3(a)(6) of the Exchange Act;

            (c) [_] Insurance Company as defined in Section 3(a)(19) of the
                    Exchange Act;

            (d) [X] Investment Company registered under Section 8 of the
                    Investment Company Exchange Act;

            (e) [_] Investment Adviser in accordance with Rule 13d-

            (f) [_] Employee Benefit Plan or Endowment Fund in
                    accordance with Rule 13d-1(b)(1)(ii)(F);

            (g) [_] Parent Holding Company or Control Person in
                    accordance with Rule 13d-1(b)(1)(ii)(G);

            (h) [_] Saving Association as defined in Section 3(b) of The
                    Federal Deposit Insurance Act;

            (i) [_] Church Plan that is excluded from the definition of an
                    Investment Company under Section 3(c)(14) of the
                    Investment Company Act;

            (j) [_] Group, in accordance with Rule 13d-1(b)(1)(ii)(J).

Item 4.     Ownership.

                  Provide the following information regarding the aggregate
                  number and percentage of the class of securities of the
                  issuer identified in Item 1.

                  (a)   Amount beneficially owned:


                  (b)   Percent of class:


                  (c)   Number of shares as to which the person has:

                        (i)   Sole power to vote or direct the vote: 83,829
                        (ii)  Shared power to vote or direct the vote:
                        (iii) Sole power to dispose or to direct the
                              disposition: 83,829
                        (iv)  Shared power to dispose or to direct the
                              disposition of:

Item 5.     Ownership of Five Percent or Less of a Class.

                  If this statement is being filed to report the fact that as
                  of the date hereof the reporting person has ceased to be the
                  beneficial owner of more than five percent of the class of
                  securities, check the following: [_]

Item 6.     Ownership of More than Five Percent on Behalf of Another Person.

                  If any other person is known to have the right to receive or
                  the power to direct the receipt of dividends from, or the
                  proceeds from the sale of, such securities, a statement to
                  that effect should be included in response to this item and,
                  if such interest relates to more than five percent of the
                  class, such person should be identifies. A listing of the
                  shareholders of an investment company registered under the
                  Investment Company Act of 1940 or the beneficiaries of
                  employee benefit plan, pension fund or endowment fund is not

Item 7.     Identification and Classification of the Subsidiary Which Acquired
            the Security Being Reported on by the Parent Holding Company.

                  If a parent company or Control person has filed this
                  schedule, pursuant to Rule 13d-1(b)(1)(ii)(G), so indicate
                  under Item 3(g) and attach an exhibit stating the identity
                  and the Item 3 classification of the relevant subsidiary. If
                  a parent holding company or control person has filed this
                  schedule pursuant to Rule 13-1(c) or Rule 13d-1(d), attach an
                  exhibit stating the identification of the relevant subsidiary.

Item 8.     Identification and Classification of Members of the Group.

                  If a group has filed this schedule pursuant to
                  ss.240.13d-1(b)(1)(ii)(J), so indicate under Item 3(j) and
                  attach and exhibit stating the identity and Item 3
                  classification of each member of the group. If a group has
                  filed this schedule pursuant to ss.240.13d-1(d), attach an
                  exhibit stating the identity of each member of the group.

Item 9.     Notice of Dissolution of Group.

                  Notice of dissolution of a group may be furnished as an
                  exhibit stating the date of the dissolution and that all
                  further filings with respect to transactions in the security
                  reported on will be filed, if required, by members of the
                  group, in their individual capacity. See Item 5.

Item 10.    Certification.

                  (a)   The following certification shall be included in the
                        statement if the statement is filed pursuant to
                        ss.240.13d-1(b): By signing below I certify that, to
                        the best of my knowledge and belief, the securities
                        referred to above were acquired and are held in the
                        ordinary course of business and were not acquired and
                        are not held for the purpose of or with the effect of
                        changing or influencing the control of the issuer of
                        the securities and were not acquired and are not held
                        in connection with or as a participant in any
                        transaction having that purpose or effect.


   After reasonable inquiry and to the best of my knowledge and belief, I
certify that the information set forth in this statement is true, complete and



     Nicholas Dalmaso, Senior Managing Director, Claymore Securities, Inc.