<ARTICLE> 5 <PERIOD-TYPE> 6-MOS <FISCAL-YEAR-END> DEC-31-1997 <PERIOD-END> JUN-30-1997 <CASH> 5,503,492 <SECURITIES> 0 <RECEIVABLES> 524,889 <ALLOWANCES> 0 <INVENTORY> 0 <CURRENT-ASSETS> 0 <PP&E> 80,451,555 <DEPRECIATION> (51,230,343) <TOTAL-ASSETS> 40,850,188 <CURRENT-LIABILITIES> 0 <BONDS> 38,893,448 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 0 <OTHER-SE> 0 <TOTAL-LIABILITY-AND-EQUITY> 40,850,188 <SALES> 0 <TOTAL-REVENUES> 7,861,065 <CGS> 10,944,345 <TOTAL-COSTS> 0 <OTHER-EXPENSES> 5,909,817 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 1,842,299 <INCOME-PRETAX> 0 <INCOME-TAX> 0 <INCOME-CONTINUING> 3,192,229 <DISCONTINUED> 0 <EXTRAORDINARY> 533,764 <CHANGES> 0 <NET-INCOME> 3,725,993 <EPS-PRIMARY> 0 <EPS-DILUTED> 0