<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE FORM
10-G FOR THE NINE-MONTHS ENDED SEPTEMBER 30, 1997 AND IS QUALIFIED IN ITS
ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS. THE AMOUNTS ARE STATED AT 
HISTORICAL COST. FOR THE PERIOD SUBSEQUENT TO JANUARY 1, 1996, FINANCIAL 
STATEMENTS WILL REFLECT PURCHASE ADJUSTMENTS.
</LEGEND>
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-START>                             JAN-01-1997
<PERIOD-END>                               SEP-30-1997
<CASH>                                          29,346
<SECURITIES>                                         0
<RECEIVABLES>                                        0
<ALLOWANCES>                                         0
<INVENTORY>                                          0
<CURRENT-ASSETS>                                29,346
<PP&E>                                         564,792
<DEPRECIATION>                                 105,789
<TOTAL-ASSETS>                                 540,005
<CURRENT-LIABILITIES>                           19,469
<BONDS>                                        216,751
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                             0
<OTHER-SE>                                     303,785
<TOTAL-LIABILITY-AND-EQUITY>                   540,005
<SALES>                                              0
<TOTAL-REVENUES>                                75,577
<CGS>                                                0
<TOTAL-COSTS>                                        0
<OTHER-EXPENSES>                                27,243
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                              15,005
<INCOME-PRETAX>                                 30,979
<INCOME-TAX>                                         0
<INCOME-CONTINUING>                             30,979
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    30,979
<EPS-PRIMARY>                                        0
<EPS-DILUTED>                                        0