Upon their return to Midway, Captain Morton submitted his patrol report which claimed the largest number of sinkings to that point in the war: ZOGEN MARU; Freighter; 1,428 tons - March 19 KOWA MARU; Transport; 3,217 tons - March 19 HOZAN MARU; Freighter; 2,260 tons - March 21 NITU MARU; Freighter; 2,183 tons - March 21 UNKNOWN MARU; Coal Collier; 2,427 tons - March 23 TAKAOSAN MARU; Freighter; 2,076 tons - March 24 UNKNOWN MARU; Freighter; 2,556 tons - March 25 SATSUKI MARU; Freighter; 1,000 - March 25 YAMABATO MARU; Freighter; 2,556 - March 29     ComSubPac would credit her with eight of the sinkings and JANAC would later increase her total to all nine.  For his achievement, Morton received his second Navy Cross.  In sixty days time, WAHOO had sunk a total of twelve enemy vessels, an unprecendented pace.  Her record for sinkings in one war patrol would last a year until it was surpassed by Dick O'Kane in his own command, USS TANG (SS-306).