FORM 6-K

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13A-16 OR 15D-16 UNDER
THE
SECURITIES EXCHANGE ACT OF 1934

For the month of December 2010
Commission File Number: 001-33068

ULTRAPETROL (BAHAMAS) LIMITED

(Translation of registrant’s name into English)

Ocean Centre, Montagu Foreshore
East Bay St.
Nassau, Bahamas
P.O. Box SS-19084
(Address of principal executive office)

Indicate by check mark whether the registrant files or will file annual reports
under cover of Form 20-F or Form 40-F.

Indicate by check mark if the registrant is submitting the Form 6-K in paper as
permitted by Regulation S-T Rule 101(b)(1): o

Note: Regulation S-T Rule 101(b)(1) only permits the submission in paper of a Form 6-K if submitted solely to provide an attached annual report to security holders.

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)7: o

Note: Regulation S-T Rule 101(b)(7) only permits the submission in paper of a Form 6-K if submitted to furnish a report or other document that the registrant foreign private issuer must furnish and make public under the laws of the jurisdiction in which the registrant is incorporated, domiciled or legally organized (the registrant’s “home country”), or under the rules of the home country exchange on which the registrant’s securities are traded, as long as the report or other document is not a press release, is not required to be and has not been distributed to the registrant’s security holders, and, if discussing a material event, has already been the subject of a Form 6-K submission or other Commission filing on EDGAR.

 

 

EXHIBIT INDEX

Attached hereto as Exhibit 99.1 is a release by Ultrapetrol (Bahamas) Limited (the “Company”), listing recent developments since the release of the Company’s results for the third quarter of fiscal year 2010, a statement reaffirming the Company’s guidance released in its earnings call presentation November 11, 2010 and a correction of a typographical error in the Company’s most recent annual report.

SIGNATURES

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, thereunto duly authorized.

Dated: December 20, 2010