<ARTICLE> 5
<LEGEND>
This schedule contains summary financial information extracted from the
company's consolidated financial statements and is qualified in its entirety by
reference to such financial statements.
</LEGEND>
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-END>                               JUN-30-1997
<CASH>                                           1,229
<SECURITIES>                                         0
<RECEIVABLES>                                        0
<ALLOWANCES>                                         0
<INVENTORY>                                          0
<CURRENT-ASSETS>                                 1,229
<PP&E>                                         247,186
<DEPRECIATION>                                (86,496)
<TOTAL-ASSETS>                                 162,805
<CURRENT-LIABILITIES>                           29,470
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                             0
<OTHER-SE>                                       9,918
<TOTAL-LIABILITY-AND-EQUITY>                   162,805
<SALES>                                         19,837
<TOTAL-REVENUES>                                19,837
<CGS>                                                0
<TOTAL-COSTS>                                   12,111
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                               6,108
<INCOME-PRETAX>                                  1,618
<INCOME-TAX>                                         0
<INCOME-CONTINUING>                              1,618
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     1,618
<EPS-PRIMARY>                                     0.38
<EPS-DILUTED>                                     0.38