| o                                                                 | REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) OR 12(g) OF THE SECURITIES EXCHANGE ACT OF 1934 |
|-------------------------------------------------------------------|--------------------------------------------------------------------------------------------------|
|                                                              |                                                                                             |
| OR                                                                |
|                                                              |                                                                                             |
| [X]                                                               | ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934             |
|                                                              |                                                                                             |
| For the fiscal year ended December 31, 2011                       |
|                                                              |
| OR                                                                |
|                                                              |                                                                                             |
| o                                                                 | TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934         |
|                                                              |                                                                                             |
| For the transition period from _______ to _______                 |
|                                                              |                                                                                             |
| OR                                                                |
|                                                              |                                                                                             |
| o                                                                 | SHELL COMPANY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934      |
|                                                              |                                                                                             |
| Date of event requiring this shell company report: Not applicable |
|                                                              |                                                                                             |
| Commission file number: 001-34848                                 |

|                                                   |
|--------------------------------------------------------|
| (Exact name of Registrant as specified in its charter) |

|                                            |
|-------------------------------------------------|
| (Translation of Registrant's name into English) |

|                                                                                                                                                                                                                                       |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Republic of the Marshall Islands                                                                                                                                                                                                           |
| (Jurisdiction of incorporation or organization)                                                                                                                                                                                            |
|                                                                                                                                                                                                                                       |
| 1-3 Patriarchou Grigoriou Street, 166 74 Glyfada, Athens, Greece                                                                                                                                                                           |
| (Address of principal executive offices)                                                                                                                                                                                              |
| Dale Ploughman, Chief Executive Officer and Chairman of the Board of DirectorsSeanergy Maritime Holdings Corp.1-3 Patriarchou Grigoriou Street, 166 74 Glyfada, Athens, GreeceTelephone: (011) +30 213 0181507, Fax: (011) +30 210 9638450 |
| (Name, Telephone, E-mail and/or Facsimile number and Address of Company Contact Person)                                                                                                                                                    |

----

| Title of class                                       | Name of exchange on which registered  |
|-----------------------------------------------------------|--------------------------------------------|
| Shares of common stock, par value $0.0001 per share  | NASDAQ Global Market                  |

| Large accelerated filer  [  ] | Accelerated filer  [  ] | Non-accelerated filer  [X] |
|----------------------------------------------|----------------------------------------|---------------------------------|

| U.S. GAAP  [X] | International Financial Reporting Standards as issued by the International Accounting Standards Board o | Other  o |
|--------------------------|---------------------------------------------------------------------------------------------------------|---------------|

----

----

|   | SEANERGY MARITIME HOLDINGS CORP. |
|--------|----------------------------------|
|   |                             |   |
|   |                             |   |
|   |                             | By: |  /s/ Dale Ploughman |
|   |                             | Name: |  Dale Ploughman |
|   |                             | Title: |  Chief Executive Officer and Chairmanof the Board of Directors |
|   |                             |   |   |

----

| Number | Description |
|--------|-------------|

| 13.1 | Certificate of Principal Executive Officer pursuant to 18 U.S.C. Section 1350 as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 |
|------|----------------------------------------------------------------------------------------------------------------------------------------------------|
| 13.2 | Certificate of Principal Financial Officer pursuant to 18 U.S.C. Section 1350 as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 |