EXHIBIT 11 TIDEWATER INC. COMPUTATION OF EARNINGS AND SHARES USED IN ARRIVING AT PRIMARY AND FULLY-DILUTED EARNINGS PER SHARE FOR THE QUARTER AND NINE-MONTH PERIOD ENDED DECEMBER 31, 1994 Quarter Ended Nine Months Ended December 31, 1994 December 31, 1994 ------------------ ------------------ Net Earnings (in thousands) $ 11,698 $ 37,466 ================== ================== Computation of weighted average number of shares outstanding: Issued: 53,191,783 shares Weighted average shares outstanding 53,160,645 53,104,620 Add: Incremental shares applicable to stock options 252,635 303,010 ------------------ ------------------ Weighted average common shares & equivalents 53,413,280 53,407,630 ================== ================== Primary and fully diluted earnings per common share $ .22 $ .70 ================== =================