EXHIBIT 23.1 CONSENT OF INDEPENDENT ACCOUNTANTS We hereby consent to the incorporation by reference in the Registration Statements on Forms S-8 (No. 2-83692, No. 33-16680, No. 33-51892, No. 33-51894, No. 33-63832, No. 33-55341, No. 33-60499, No. 333-12531, No. 333-39087, and No. 333-39089) of McDermott International, Inc. and the Registration Statement on Form S-3 (No. 33-54940) of McDermott Incorporated and in the related Prospectuses of our report dated May 14, 1999 relating to the consolidated financial statements of McDermott International, Inc. which appears in this Form 10-K. PricewaterhouseCoopers LLP New Orleans, Louisiana June 9, 1999