WASHINGTON, DC 20549

                                    FORM 8-K

                             CURRENT REPORT PURSUANT
                          TO SECTION 13 OR 15(D) OF THE
                         SECURITIES EXCHANGE ACT OF 1934

     Date of report (Date of earliest event reported)   April 22, 2005       

                              SEACOR Holdings Inc.
             (Exact Name of Registrant as Specified in Its Charter)

                 (State or Other Jurisdiction of Incorporation)

           1-12289                           13-3542736
  (Commission File Number)        (IRS Employer Identification No.)

        11200 Richmond, Suite 400
            Houston, Texas                                  77082
  (Address of Principal Executive Offices)                (Zip Code)

                                 (281) 899-4800
              (Registrant's Telephone Number, Including Area Code)

                                 Not Applicable
          (Former Name or Former Address, if Changed Since Last Report)

           Check the appropriate box below if the Form 8-K filing is intended to
simultaneously satisfy the filing obligation of the registrant under any of the
following provisions (see General Instruction A.2. below):

|X|  Written communications pursuant to Rule 425 under the Securities Act (17
     CFR 230.425)

|X|  Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR

|_|  Pre-commencement communications pursuant to Rule 14d-2(b) under the
     Exchange Act (17 CFR 240.14d-2(b))

|_|  Pre-commencement communications pursuant to Rule 13e-4(c) under the
     Exchange Act (17 CFR 240.13e-4(c))

Item 8.01. Other Events.

           On April 22, 2005, SEACOR Holdings Inc. and Seabulk International,
Inc. issued a joint press release announcing that they have been granted early
termination of the waiting period under the Hart-Scott-Rodino Antitrust
Improvements Act of 1976 applicable to the proposed merger of Seabulk
International, Inc. with a wholly owned subsidiary of SEACOR Holdings Inc. 

           A copy of the press release is attached hereto as Exhibit 99.1 and is
incorporated herein by reference.

Item 9.01.                 Financial Statements and Exhibits

(c)                        Exhibits.

99.1                       Press Release, dated April 22, 2005


           Pursuant to the requirements of the Securities Exchange Act of 1934,
the registrant has duly caused this report to be signed on its behalf by the
undersigned hereunto duly authorized.

                                   SEACOR Holdings Inc.

                                   By:  /s/  Alice N. Gran                      
                                      Name:   Alice N. Gran
                                      Title:  Senior Vice President and General

Date:  April 22, 2005


                                  EXHIBIT INDEX

    Exhibit No.                    Description
    -----------                    -----------

     99.1                  Press Release, dated April 22, 2005