Exhibit 7.1

Aurelia Energy N.V.  Computation of Ratios

|                                                                                                |             | 2000    |   | 2001    |   | 2002    |       | 2003    |       | 2004   
|----------------------------------------------------------------------------------------------- | ----------- | ------- | - | ------- | - | ------- | ----- | ------- | ----- | -------
|Pretax income from cont. oper. before adj. For min. int or income or loss from equity investees |             | 37,929  |   | 31,266  |   | 13,763  |       | 11,514  |       | 5,920  
|plus fixed charges:                                                                             |             |         |   |         |   |         |       |         |       |        
| interest expensed or                                                                          |             | 36,116  |   | 28,776  |   | 48,898  |       | 45,120  |       | 44,940 
|                                                                                                | capitalized |         | 0 |         | 0 |         | 3,549 |         | 6,062 |        
| amortized premiums, discounts and capitalized expenses related to indebtedness                |             | 710     |   | 710     |   | 2,395   |       | 2,651   |       | 2,730  
| an estimate of the interest within rental expense                                             |             | 61      |   | 63      |   | 91      |       | 120     |       | 128    
| preference security dividend req. of consolidated sub.                                        |             | 0       |   | 0       |   | 0       |       | 0       |       | 0      
|                                                                                                |             |         |   |         |   |         |       |         |       |        
|Total fixed charges                                                                             |             | 36,887  |   | 29,549  |   | 54,932  |       | 53,953  |       | 48,183 
|                                                                                                |             |         |   |         |   |         |       |         |       |        
|plus amortization of capitalized interest                                                       |             | 2,728   |   | 2,487   |   | 2,003   |       | 2,481   |       | 3,151  
|plus distributed income to equity investors                                                     |             | 0       |   | 0       |   | 0       |       | 0       |       | 0      
|plus the share of pre-tax losses of equity investees                                            |             | 0       |   | 0       |   | 0       |       | 0       |       | 0      
|less interest capitalized                                                                       |             | 0       |   | 0       |   | 3,549   |       | 6,062   |       | 385    
|less interest accrued subordinated Marenco loan                                                 |             | 0       |   | 0       |   | 0       |       | 0       |       | 0      
|less preference security dividend req. of consolidated subsidiaries                             |             | 0       |   | 0       |   | 0       |       | 0       |       | 0      
|less minority interest in pre-tax income                                                        |             | 0       |   | 0       |   | 0       |       | 0       |       | 0      
|                                                                                                |             |         |   |         |   |         |       |         |       |        
|Earnings                                                                                        |             | 77,544  |   | 63,302  |   | 67,149  |       | 61,886  |       | 56,869 
|                                                                                                |             |         |   |         |   |         |       |         |       |        
|Fixed charges                                                                                   |             | 36,887  |   | 29,549  |   | 54,932  |       | 53,953  |       | 48,183 
|                                                                                                |             |         |   |         |   |         |       |         |       |        
|Ratio of earnings to fixed charges                                                              |             | 2.10    |   | 2.14    |   | 1.22    |       | 1.15    |       | 1.18   
|                                                                                                |             |         |   |         |   |         |       |         |       |        
|Cash interest expense (Interest paid)                                                           |             | 28,232  |   | 20,738  |   | 41,829  |       | 39,722  |       | 35,169 
|EBITDA                                                                                          |             | 128,363 |   | 107,430 |   | 111,800 |       | 104,239 |       | 117,576
|                                                                                                |             |         |   |         |   |         |       |         |       |        
|EBITDA/Cash interest expense                                                                    |             | 4.55    |   | 5.18    |   | 2.67    |       | 2.62    |       | 3.34   
|                                                                                                |             |         |   |         |   |         |       |         |       |        
|Net debt                                                                                        |             | 322,459 |   | 530,864 |   | 558,079 |       | 554,518 |       | 503,307
|                                                                                                |             |         |   |         |   |         |       |         |       |        
|Net Debt/EBITDA                                                                                 |             | 2.51    |   | 4.94    |   | 4.99    |       | 5.32    |       | 4.28   
|                                                                                                |             |         |   |         |   |         |       |         |       |        

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