<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM MCDERMOTT
INTERNATIONAL'S JUNE 30, 1997 FINANCIAL STATEMENTS AND IS QUALIFIED IN ITS
ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          MAR-31-1998
<PERIOD-END>                               JUN-30-1997
<CASH>                                         289,330
<SECURITIES>                                    76,393
<RECEIVABLES>                                  652,523
<ALLOWANCES>                                    99,650
<INVENTORY>                                    389,871
<CURRENT-ASSETS>                             1,819,434
<PP&E>                                       1,774,193
<DEPRECIATION>                               1,190,500
<TOTAL-ASSETS>                               4,527,722
<CURRENT-LIABILITIES>                        1,509,217
<BONDS>                                        625,702
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                      2,875
<COMMON>                                        55,258
<OTHER-SE>                                     488,988
<TOTAL-LIABILITY-AND-EQUITY>                 4,527,722
<SALES>                                        928,087
<TOTAL-REVENUES>                               928,087
<CGS>                                          880,744
<TOTAL-COSTS>                                  880,744
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                              25,205
<INCOME-PRETAX>                                127,038
<INCOME-TAX>                                    17,178
<INCOME-CONTINUING>                            109,860
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                   109,860
<EPS-PRIMARY>                                     1.94
<EPS-DILUTED>                                     1.77