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Basis of Presentation and General Information | 12 Months Ended
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Dec. 31, 2012
Basis of Presentation and General Information [Abstract] |
Basis of Presentation and General Information | 1. Basis of Presentation and General Information: The accompanying consolidated financial statements as of and for the years ended December 31, 2010, 2011 and 2012 include the accounts of Star Bulk Carriers Corp. (Star Bulk) and its wholly owned subsidiaries (collectively, the “Company” or “we”). Star Bulk was incorporated on December 13, 2006 under the laws of the Marshall Islands. The Company is engaged in the ocean transportation of dry bulk cargoes worldwide through the ownership and operation of dry bulk carrier vessels and is the sole owner of all of the outstanding shares of Star Bulk Management Inc., Star Bulk S.A, Star Bulk Manning LLC and the ship-owning subsidiaries as set forth below. Since December 3, 2007, Star Bulk shares are trading on the NASDAQ Global Select Market under the ticker symbol SBLK. Effective October 15, 2012, the Company effected a 15-for-1 reverse stock split on its issued and outstanding common stock (Note 8). All share and per share amounts disclosed in the accompanying financial statements give effect to this reverse stock split retroactively, for all periods presented. Below is the list of the Company's wholly owned subsidiaries as of December 31, 2012:
Wholly Owned Subsidiaries |  | Vessel Name |  | DWT |  | Date Delivered to Star Bulk |  | Year Built
Star Bulk Management Inc. |  | — |  | — |  | — |  | —
Starbulk S.A. |  | — |  | — |  | — |  | —
Star Bulk Manning LLC |  | — |  | — |  | — |  | —
|  | Vessels in operation at December 31, 2012 |  |  |  |  |  |
Star Aurora LLC |  | Star Aurora |  | 171.199 |  | September 8, 2010 |  | 2000
Star Big LLC |  | Star Big |  | 168.404 |  | July 25, 2011 |  | 1996
Star Borealis LLC |  | Star Borealis |  | 179.678 |  | September 9, 2011 |  | 2011
Star Mega LLC |  | Star Mega |  | 170.631 |  | August 16, 2011 |  | 1994
Star Polaris LLC |  | Star Polaris |  | 179.546 |  | November 14, 2011 |  | 2011
Lamda LLC |  | Star Sigma |  | 184.403 |  | April 15, 2008 |  | 1991
Star Cosmo LLC |  | Star Cosmo |  | 52.247 |  | July 1, 2008 |  | 2005
Star Delta LLC |  | Star Delta (ex F Duckling) |  | 52.434 |  | January 2, 2008 |  | 2000
Star Epsilon LLC |  | Star Epsilon (ex G Duckling) |  | 52.402 |  | December 3, 2007 |  | 2001
Star Gamma LLC |  | Star Gamma (ex C Duckling) |  | 53.098 |  | January 4, 2008 |  | 2002
Star Kappa LLC |  | Star Kappa (ex E Duckling) |  | 52.055 |  | December 14, 2007 |  | 2001
Star Omicron LLC |  | Star Omicron |  | 53.489 |  | April 17, 2008 |  | 2005
Star Theta LLC |  | Star Theta (ex J Duckling) |  | 52.425 |  | December 6, 2007 |  | 2003
Star Zeta LLC |  | Star Zeta (ex I Duckling) |  | 52.994 |  | January 2, 2008 |  | 2003
|  | Vessels disposed* |  |  |  |  |  |
Star Alpha LLC |  | Star Alpha (ex A Duckling) |  | 175.075 |  | January 9,2008 |  | 1992
Star Beta LLC |  | Star Beta (ex B Duckling) |  | 174.691 |  | December 28, 2007 |  | 1993
Star Ypsilon LLC |  | Star Ypsilon |  | 150.940 |  | September 18, 2008 |  | 1991
* For vessels disposed refer to Note 5. Charterers individually accounting for more than 10% of the Company's voyage revenues during the years ended December 31, 2010, 2011 and 2012 are as follows:
Charterer |  | 2010 |  | 2011 |  | 2012
A |  | 21% |  | - |  | -
B |  | 17% |  | - |  | -
C |  | 13% |  | 12% |  | -
D |  | 10% |  | 13% |  | -
E |  | 14% |  | 12% |  | 14%
F |  | 12% |  | 19% |  | 15%
G |  | - |  | 15% |  | 28%
H |  | - |  | - |  | 10%

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- Definition The entire disclosure for the business description and basis of presentation concepts. Business description describes the nature and type of organization including but not limited to organizational structure as may be applicable to holding companies, parent and subsidiary relationships, business divisions, business units, business segments, affiliates and information about significant ownership of the reporting entity. Basis of presentation describes the underlying basis used to prepare the financial statements (for example, US Generally Accepted Accounting Principles, Other Comprehensive Basis of Accounting, IFRS). + References No definition available. + Details
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