**Exhibit 7.1**

**Aurelia EnergyN.V.Computation of Ratios**
| ** **                                                                                        | ** ** | **2001** | ** ** | **2002** | ** ** | **2003** | ** ** | **2004** | ** ** | **2005** | ** ** | **2006** | ** ** |
|---------------------------------------------------------------------------------------------------|------------|----------|------------|----------|------------|----------|------------|----------|------------|----------|------------|----------|------------|
| Pretax income from  cont. oper. before adj. For min. int or  income or loss from equity investees |       | 31,266   |       | 13,763   |       | 11,514   |       | 5,920    |       | 2,045    |       | 4,423    |       |
| plus fixed charges:                                                                               |       |     |       |     |       |     |       |     |       |     |       |     |       |
| —interest expensed or                                                                        |       | 28,776   |       | 48,898   |       | 45,120   |       | 44,940   |       | 54,464   |       | 72,415   |       |
| capitalized                                                                                       |       | 0        |       | 3,549    |       | 6,062    |       | 385      |       | 0        |       | 6,464    |       |
| —amortized premiums,  discounts and capitalized expenses related to indebtedness             |       | 710      |       | 2,395    |       | 2,651    |       | 2,730    |       | 2,938    |       | 6,522    |       |
| —an estimate of the  interest within rental expense                                          |       | 63       |       | 91       |       | 120      |       | 128      |       | 140      |       | 102      |       |
| **Total fixed charges**                                                                           |       | 29,549   |       | 54,932   |       | 53,953   |       | 48,183   |       | 57,542   |       | 85,503   |       |
| plus amortization of  capitalized interest                                                        |       | 2,487    |       | 2,003    |       | 2,481    |       | 3,151    |       | 3,181    |       | 3,181    |       |
| less interest  capitalized                                                                        |       | 0        |       | 3,549    |       | 6,062    |       | 385      |       | 0        |       | 6,464    |       |
| **Earnings**                                                                                      |       | 63,302   |       | 67,149   |       | 61,886   |       | 56,869   |       | 62,768   |       | 86,643   |       |
| **Fixed charges**                                                                                 |       | 29,549   |       | 54,932   |       | 53,953   |       | 48,183   |       | 57,542   |       | 85,503   |       |
| **Ratio of earnings to fixed  charges**                                                           |       | 2.14     |       | 1.22     |       | 1.15     |       | 1.18     |       | 1.09     |       | 1.01     |       |
| **Cash interest expense (Interest  paid)**                                                        |       | 20,738   |       | 41,829   |       | 39,722   |       | 35,169   |       | 39,930   |       | 65,298   |       |
| **EBITDA**                                                                                        |       | 107,430  |       | 111,800  |       | 104,239  |       | 117,576  |       | 162,785  |       | 178,070  |       |
| **EBITDA/Cash interest expense**                                                                  |       | 5.18     |       | 2.67     |       | 2.62     |       | 3.34     |       | 4.08     |       | 2.73     |       |
| **Net debt**                                                                                      |       | 530,864  |       | 558,079  |       | 554,518  |       | 503,307  |       | 672,166  |       | 874,085  |       |
| **Net Debt/EBITDA**                                                                               |       | 4.94     |       | 4.99     |       | 5.32     |       | 4.28     |       | 4.13     |       | 4.91     |       |

 

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