<ARTICLE> 5 <LEGEND> THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM MCDERMOTT INTERNATIONAL'S MARCH 31, 1998 FINANCIAL STATEMENTS AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS. </LEGEND> <MULTIPLIER> 1,000 <PERIOD-TYPE> 12-MOS <FISCAL-YEAR-END> MAR-31-1998 <PERIOD-END> MAR-31-1998 <CASH> 277,876 <SECURITIES> 135 <RECEIVABLES> 626,425 <ALLOWANCES> 75,873 <INVENTORY> 302,890 <CURRENT-ASSETS> 1,596,556 <PP&E> 1,715,352 <DEPRECIATION> 1,181,658 <TOTAL-ASSETS> 4,501,130 <CURRENT-LIABILITIES> 1,461,126 <BONDS> 598,182 <PREFERRED-MANDATORY> 0 <PREFERRED> 2,875 <COMMON> 56,608 <OTHER-SE> 620,290 <TOTAL-LIABILITY-AND-EQUITY> 4,501,130 <SALES> 3,674,635 <TOTAL-REVENUES> 3,674,635 <CGS> 3,483,625 <TOTAL-COSTS> 3,483,625 <OTHER-EXPENSES> 0 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 81,454 <INCOME-PRETAX> 291,807 <INCOME-TAX> 76,117 <INCOME-CONTINUING> 215,690 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 215,690 <EPS-PRIMARY> 3.74 <EPS-DILUTED> 3.48