Grimm mounted a second expedition in June 1981 aboard the research vessel Gyre, with Spiess and Ryan again joining the expedition.[1] To increase their chances of finding the wreck, the team employed a much more capable sonar device, the Scripps Deep Tow. The weather was again very poor, but all 14 of the targets were successfully covered and found to be natural features. On the last day of the expedition, an object that looked like a propeller was found.[24] Grimm announced on his return to Boston that Titanic had been found, but the scientists declined to endorse his identification.[25] A documentary of this expedition, featuring James Drury, was titled Return to the Titanic (1981).