UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                  SCHEDULE 13G

                    Under the Securities Exchange Act of 1934


                                 MARITRANS INC.
--------------------------------------------------------------------------------
                                (Name of Issuer)

                                  COMMON STOCK
--------------------------------------------------------------------------------
                         (Title of Class of Securities)

                                    570363101
--------------------------------------------------------------------------------
                                 (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 the
disclosures provided in a prior cover page.

The information required in 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 ("Act") 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
Notes).



                               Page 1 of 8 pages



---------------------------------     13G     ----------------------------------
CUSIP No. 570363101                                            Page 2 of 8 Pages
---------------------------------             ----------------------------------

------------- ------------------------------------------------------------------
     1        NAME OF REPORTING PERSON
              S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

              THE BESSEMER GROUP, INCORPORATED*
              13-3093730
------------- ------------------------------------------------------------------
     2        CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                (a) [ ]
                                                                (b) [X]
------------- ------------------------------------------------------------------
     3        SEC USE ONLY

------------- ------------------------------------------------------------------
     4        CITIZENSHIP OR PLACE OF ORGANIZATION

              Delaware
------------- ------------------------------------------------------------------
                                       5      SOLE VOTING POWER
                                              -0-
            NUMBER OF
                                   ---------- ----------------------------------
             SHARES                    6      SHARED VOTING POWER
          BENEFICIALLY
            OWNED BY                          714,400 shs.
                                   ---------- ----------------------------------
              EACH                     7      SOLE DISPOSITIVE POWER
            REPORTING
             PERSON                           -0-
                                   ---------- ----------------------------------
              WITH                     8      SHARED DISPOSITIVE POWER

                                              714,400 shs.
------------- ------------------------------------------------------------------
     9        AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
              714,400 shs.
------------- ------------------------------------------------------------------
     10       CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN
              SHARES*
                                                                           [ ]
------------- ------------------------------------------------------------------
     11       PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

              6.18%
------------- ------------------------------------------------------------------
     12       TYPE OF REPORTING PERSON*

              HC
------------- ------------------------------------------------------------------
*The shares reported on this page are the same shares reported on page 3, as The
Bessemer Group, Incorporated is the parent of the other reporting person.

                      *SEE INSTRUCTIONS BEFORE FILLING OUT!



                               Page 2 of 8 pages



---------------------------------     13G     ----------------------------------
CUSIP No. 570363101                                            Page 3 of 8 Pages
---------------------------------             ----------------------------------

------------- ------------------------------------------------------------------
     1        NAME OF REPORTING PERSON
              S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

              BESSEMER TRUST COMPANY, N.A.*
              13-2792165
------------- ------------------------------------------------------------------
     2        CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                (a) [ ]
                                                                (b) [X]
------------- ------------------------------------------------------------------
     3        SEC USE ONLY

------------- ------------------------------------------------------------------
     4        CITIZENSHIP OR PLACE OF ORGANIZATION

              U.S.A.
------------- ------------------------------------------------------------------
                                       5      SOLE VOTING POWER
                                              -0- shs.
            NUMBER OF
                                   ---------- ----------------------------------
             SHARES                    6      SHARED VOTING POWER
          BENEFICIALLY
            OWNED BY                          714,400 shs.
                                   ---------- ----------------------------------
              EACH                     7      SOLE DISPOSITIVE POWER
            REPORTING
             PERSON                           -0- shs.
                                   ---------- ----------------------------------
              WITH                     8      SHARED DISPOSITIVE POWER
                                              714,400 shs.
------------- ------------------------------------------------------------------
     9        AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

              714,400 shs.
------------- ------------------------------------------------------------------
     10       CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN
              SHARES*
                                                                            [ ]
------------- ------------------------------------------------------------------
     11       PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

              6.18%
------------- ------------------------------------------------------------------
     12       TYPE OF REPORTING PERSON*

              BK
------------- ------------------------------------------------------------------
*The shares reported on this page include the shares reported on page 4, as
Bessemer Trust Company, N.A. is the parent of the other reporting person.

                      *SEE INSTRUCTIONS BEFORE FILLING OUT!



                               Page 3 of 8 pages



---------------------------------     13G     ----------------------------------
CUSIP No. 570363101                                            Page 4 of 8 Pages
---------------------------------             ----------------------------------

------------- ------------------------------------------------------------------
     1        NAME OF REPORTING PERSON
              S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

              BESSEMER INVESTMENT MANAGEMENT LLC*
              52-2303291
------------- ------------------------------------------------------------------
     2        CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                              (a) [ ]
                                                              (b) [X]
------------- ------------------------------------------------------------------
     3        SEC USE ONLY

------------- ------------------------------------------------------------------
     4        CITIZENSHIP OR PLACE OF ORGANIZATION

              Delaware
------------- ------------------------------------------------------------------
                                       5      SOLE VOTING POWER
                                              714,400 shs.
            NUMBER OF
                                   ---------- ----------------------------------
             SHARES                    6      SHARED VOTING POWER
          BENEFICIALLY
            OWNED BY                          0 shs.
                                   ---------- ----------------------------------
              EACH                     7      SOLE DISPOSITIVE POWER
            REPORTING
             PERSON                           714,400 shs.
                                   ---------- ----------------------------------
              WITH                     8      SHARED DISPOSITIVE POWER
                                              0 shs.
------------- ------------------------------------------------------------------
     9        AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

              714,400 shs.
------------- ------------------------------------------------------------------
     10       CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN
              SHARES*
                                                                           [ ]
------------- ------------------------------------------------------------------
     11       PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

              6.18%
------------- ------------------------------------------------------------------
     12       TYPE OF REPORTING PERSON*

              IA
------------- ------------------------------------------------------------------
*The shares reported on this page are the same shares reported on page 5, as
Bessemer Investment Management LLC is the investment adviser of the other
reporting person.

                      *SEE INSTRUCTIONS BEFORE FILLING OUT!



                               Page 4 of 8 pages


---------------------------------     13G     ----------------------------------
CUSIP No. 570363101                                            Page 5 of 8 Pages
---------------------------------             ----------------------------------

------------- ------------------------------------------------------------------
     1        NAME OF REPORTING PERSON
              S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

              OLD WESTBURY REAL RETURN FUND
              20-2413510
------------- ------------------------------------------------------------------
     2        CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                (a) [ ]
                                                                (b) [X]
------------- ------------------------------------------------------------------
     3        SEC USE ONLY

------------- ------------------------------------------------------------------
     4        CITIZENSHIP OR PLACE OF ORGANIZATION

              Maryland
------------- ------------------------------------------------------------------
                                       5      SOLE VOTING POWER
                                              714,400 shs.
            NUMBER OF
                                   ---------- ----------------------------------
             SHARES                    6      SHARED VOTING POWER
          BENEFICIALLY
            OWNED BY                          0 shs.
                                   ---------- ----------------------------------
              EACH                     7      SOLE DISPOSITIVE POWER
            REPORTING
             PERSON                           714,400 shs.
                                   ---------- ----------------------------------
              WITH                     8      SHARED DISPOSITIVE POWER
                                              0 shs.
------------- ------------------------------------------------------------------
     9        AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

              714,400 shs.
------------- ------------------------------------------------------------------
     10       CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN
              SHARES*
                                                                           [ ]
------------- ------------------------------------------------------------------
     11       PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

              6.18%
------------- ------------------------------------------------------------------
     12       TYPE OF REPORTING PERSON*

              IV
------------- ------------------------------------------------------------------
                      *SEE INSTRUCTIONS BEFORE FILLING OUT!



                               Page 5 of 8 pages



Item 1.

(a) Name of Issuer:

                           Maritrans, Inc.

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

                           Two Harbour Place
                           302 Knights Run Avenue, Suite 1200
                           Tampa, Florida  33602

Item 2.

         (a), (b) and (c) Name of Persons Filing, Address of Principal Business
         Office and Citizenship:

                  The Bessemer Group, Incorporated ("BGI") as a parent holding
company and Bessemer Trust Company, N.A. ("BTNA"), Bessemer Investment
Management LLC ("BIM") and Old Westbury Real Return Fund ("OWRRF"). BTNA is
wholly-owned by BGI. BIM is a wholly owned subsidiary of BTNA and is the
investment advisor to OWRRF. BTNA may be deemed to control BIM and BIM may be
deemed to control OWRRF.

                  BTNA is a trust company that manages accounts for the benefit
of others. BIM is a registered investment advisor that furnishes investment
advisory services to OWRRF. The holder of the securities referred to in this
statement is OWRRF.

                  BGI has its principal business office at 100 Woodbridge Center
Drive, Woodbridge, New Jersey 07095-0980. BTNA and BIM each has its principal
office at 630 Fifth Avenue, New York, New York 10111. OWRRF has its principal
business office at 3435 Steltzer Road, Columbus, Ohio 43219.

                  BGI is a corporation organized under the laws of Delaware.
BTNA is a national bank organized under the laws of the United States of
America. BIM is a corporation organized under the laws of Delaware. OWRRF is a
series of Old Westbury Funds, Inc., a Maryland corporation and an open-end,
management investment company registered under the Investment Company Act of
1940.

(d) Title of Class of Securities:

                           Common Stock

(e) CUSIP Number:

                           570363101

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), (c), (f), (h) through (j) not applicable.

                  (b)[X] Bank as defined in Section 3(a)(6) of the Act, as to
                   BTNA.



                               page 6 of 8 pages


                  (d)      [X] Investment company registered under Section 8 of
                           the Investment Company Act of 1940, as to OWRRF.

                  (e)      [X] Investment adviser in accordance with
                           Rule13d-1(b)(1)(ii)(E), as to BIM.

                  (g)      [X] Parent holding company or control person, in
                           accordance with Rule 13d-1(b)(1)(ii)(G), as to BGI.

Item 4.  Ownership

                  Items 5 through 9 and Item 11 of Pages 2 through 5 of this
Statement are incorporated herein by reference.

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

                  Not applicable.

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

                  Not applicable.

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

                  Items 1 and 12 of pages 3 through 5 of this Statement are
incorporated herein by reference.

Item 8.  Identification and Classification of Members of the Group

                  Not applicable.

Item 9.  Notice of Dissolution of Group

                  Not applicable.




                               Page 7 of 8 pages



Item 10.  Certification

                  By signing below, the undersigned certify that, to the best of
the knowledge and belief of the undersigned, 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 such securities and were not acquired
and are not held in connection with or as a participant in any transaction
having that purpose or effect.

Item 11.  Signatures

                  After reasonable inquiry and to the best of our knowledge and
belief, we certify that the information set forth in this statement is true,
complete and correct.

Dated:     February 10, 2006

                                   THE BESSEMER GROUP, INCORPORATED

                                   By:  /s/ Richard R. Davis
                                      ------------------------------------------
                                      Name:   Richard R. Davis,
                                      Title:  Managing Director


                                   BESSEMER TRUST COMPANY, N.A.

                                   By:  /s/ Richard R. Davis
                                      ------------------------------------------
                                      Name:   Richard R. Davis,
                                      Title:  Managing Director


                                   BESSEMER INVESTMENT MANAGEMENT LLC

                                   By:  /s/ Richard R. Davis
                                      ------------------------------------------
                                      Name:   Richard R. Davis,
                                      Title:  Managing Director


                                   OLD WESTBURY REAL RETURN FUND
                                   By:  BESSEMER INVESTMENT MANAGEMENT LLC

                                   By:  /s/ Richard R. Davis
                                      ------------------------------------------
                                      Name:   Richard R. Davis,
                                      Title:  Managing Director



                               Page 8 of 8 pages