UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q/A

Amendment No. 1

(Mark One)

For the quarterly period ended June 30, 2011.

or

For the transition period from to

Commission File Number 333-165796

UNITED MARITIME GROUP, LLC

(Exact name of registrant as specified in its charter)

601 S. Harbour Island Blvd., Suite 230

Tampa, FL 33602

(Address of principal executive offices)

(813) 209-4200

(Company’s telephone number, including area code)

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes x No ¨

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). Yes x No ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act:

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ¨ No x

EXPLANATORY NOTE

This Amendment No. 1 to the Quarterly Report on Form 10-Q/A (the “Amendment”) amends the Quarterly Report on Form 10-Q of United Maritime Group, LLC, (the “Company”) for the quarter ended June 30, 2011 (the “Original Filing”), that was originally filed with the U.S. Securities and Exchange Commission on August 11, 2011. The Amendment is being filed to submit Exhibit 101. The Amendment revises the exhibit index included in Part II, Item 6 of the Original Filing and Exhibit 101 (XBRL interactive data) is included as an exhibit to the Amendment.

In addition, as required by Rule 12b-15 under the Securities Exchange Act of 1934, as amended (“Exchange Act”), new certifications by the Company’s principal executive officer and principal financial officers are filed as exhibits hereto.

Except as described above, the Amendment does not modify or update the disclosures presented in, or exhibits to, the Original Filing in any way. Those sections of the Original Filing that are unaffected by the Amendment are not included herein. The Amendment continues to speak as of the date of the Original Filing. Furthermore, the Amendment does not reflect events occurring after the filing of the Original Filing. Accordingly, the Amendment should be read in conjunction with the Original Filing, as well as the Company’s other filings made with the SEC pursuant to Section 13(a) or 15(d) of the Exchange Act subsequent to the filing of the Original Filing.

PART II—OTHER INFORMATION

ITEM 6—EXHIBITS

⁽¹⁾Pursuant to Rule 406T of U.S, Securities and Exchange Commission Regulation S-T, the interactive data files on Exhibit 101 of this report are deemed not filed or part of a registration statement or prospectus for purposes of Sections 11 or 12 of the Securities Act of 1933, as amended, are deemed not filed for purposes of Section 18 of the Securities and Exchange Act of 1934, as amended, and otherwise are not subject to liability under those sections.

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.