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REVENUES FROM MAJOR CUSTOMERS | 12 Months Ended
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Dec. 31, 2012
REVENUES FROM MAJOR CUSTOMERS | 9. REVENUES FROM MAJOR CUSTOMERS The Company’s customer base is primarily concentrated in the oil and gas industry. Through the Company’s marine fabrication subsidiary, its customer base is expanding into other industries that utilize marine vessels. The Company is not dependent on any one customer, and the revenue earned from each customer varies from year to year based on the contracts awarded; however, the Company is highly dependent on a few large customers in each year, particularly customers for our major deepwater projects, as shown below. Revenues from customers comprising 10% or more of the Company’s total revenue for the years ended December 31 are summarized as follows (in thousands):
|  | 2012 |  |  | 2011 |  |  | 2010 |
Chevron Corporation |  | $ | 192,370 |  |  | $ | 63,769 |  |  | $ | — |
Williams Field Services-Gulf Coast Company L.P. |  |  | 124,841 |  |  |  | — |  |  |  | — |
Eni US Operating Co. Inc. |  |  | — |  |  |  | — |  |  |  | 38,497 |
American Electric Power Service Corporation |  |  | — |  |  |  | — |  |  |  | 27,858 |
Versabuild, LLC |  |  | — |  |  |  | — |  |  |  | 27,407 |

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- Definition Entity-Wide Revenue, Major Customer, Amount. + References No definition available. + Details
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