On 16 August, "Wahoo" sighted a freighter headed south, but made another contact in a better position for attack. Shifting targets, she launched one torpedo at a medium-sized freighter. It missed. The next day, the scene was repeated with the same results. No pursuit was undertaken, in hopes of a loaded target heading south. However, "Wahoo" sighted a freighter heading north in ballast and commenced a submerged approach. Morton launched one torpedo which missed. Just as the torpedo left its tube, a southbound freighter passed close aboard this target, but the torpedo missed. "Wahoo" then surfaced and chased the southbound freighter. While pursuing this ship, the submarine sighted another target well ahead and away from the coast, so she again shifted targets. While tracking this new target, she passed two small northbound ships – one looked like a tug and the other resembled a tanker. "Wahoo" made a submerged approach and launched a torpedo at the medium-sized freighter. It was a miss. She fired again; still a miss, but this torpedo, probably broaching, exploded. The submarine surfaced and headed further out to sea.