Exhibit 7.1

Aurelia Energy N.V.  Computation of Ratios

|                                                                                                |             | 1998    |        | 1999    |        | 2000    |   | 2001    |   | 2002   
|----------------------------------------------------------------------------------------------- | ----------- | ------- | ------ | ------- | ------ | ------- | - | ------- | - | -------
|Pretax income from cont. oper. before adj. For min. int or income or loss from equity investees |             | 63,127  |        | 44,225  |        | 37,929  |   | 31,266  |   | 13,763 
|plus fixed charges:                                                                             |             |         |        |         |        |         |   |         |   |        
| interest expense or                                                                           |             | 19,194  |        | 32,285  |        | 36,116  |   | 28,776  |   | 46,503 
|                                                                                                | capitalized |         | 16,077 |         | 12,146 |         | 0 |         | 0 |        
| amortized premiums, discounts and capitalized expenses related to indebtedness                |             | 710     |        | 710     |        | 710     |   | 710     |   | 2,395  
| an estimate of the interest within rental expense                                             |             | 61      |        | 56      |        | 61      |   | 63      |   | 91     
| preference security dividend req. of consolidated sub.                                        |             |         |        |         |        |         |   |         |   |        
|                                                                                                |             |         |        |         |        |         |   |         |   |        
|Total fixed charges                                                                             |             | 36,042  |        | 45,197  |        | 36,887  |   | 29,549  |   | 52,538 
|                                                                                                |             |         |        |         |        |         |   |         |   |        
|plus amortization of capitalized interest                                                       |             | 1,019   |        | 2,206   |        | 2,728   |   | 2,728   |   | 3,065  
|plus distributed income to equity investors                                                     |             |         |        |         |        |         |   |         |   |        
|plus the share of pre-tax losses of equity investees                                            |             |         |        |         |        |         |   |         |   |        
|less interest capitalized                                                                       |             | 16,077  |        | 12,146  |        | 0       |   | 0       |   | 3,549  
|less interest accrued subordinated Marenco loan                                                 |             | 0       |        | 0       |        | 0       |   | 0       |   | 0      
|less preference security dividend req. of consolidated subsidiaries                             |             |         |        |         |        |         |   |         |   |        
|less minority interest in pre-tax income                                                        |             |         |        |         |        |         |   |         |   |        
|                                                                                                |             |         |        |         |        |         |   |         |   |        
|Earnings                                                                                        |             | 84,111  |        | 79,482  |        | 77,544  |   | 63,543  |   | 65,817 
|                                                                                                |             |         |        |         |        |         |   |         |   |        
|Fixed charges                                                                                   |             | 36,042  |        | 45,197  |        | 36,887  |   | 29,549  |   | 52,538 
|                                                                                                |             |         |        |         |        |         |   |         |   |        
|Ratio of earnings to fixed charges                                                              |             | 2.33    |        | 1.76    |        | 2.10    |   | 2.15    |   | 1.25   
|                                                                                                |             |         |        |         |        |         |   |         |   |        
|Cash interest expense (Interest paid)                                                           |             | 31,356  |        | 36,610  |        | 28,232  |   | 20,738  |   | 41,829 
|EBITDA                                                                                          |             | 123,074 |        | 117,938 |        | 128,363 |   | 107,430 |   | 111,800
|                                                                                                |             |         |        |         |        |         |   |         |   |        
|EBITDA/Cash interest expense                                                                    |             | 3.93    |        | 3.22    |        | 4.55    |   | 5.18    |   | 2.67   
|                                                                                                |             |         |        |         |        |         |   |         |   |        
|Net debt                                                                                        |             | 457,785 |        | 413,681 |        | 326,544 |   | 530,864 |   | 558,079
|                                                                                                |             |         |        |         |        |         |   |         |   |        
|Net Debt/EBITDA                                                                                 |             | 3.72    |        | 3.51    |        | 2.54    |   | 4.94    |   | 4.99   
|                                                                                                |             |         |        |         |        |         |   |         |   |        

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