During this smoking ban, Dr. Benjamin Weybrew carried out a battery of tests on crew volunteers, both smokers and non-smokers, to measure cardiovascular functions and psychological stress indices to determine the effects that the prohibition of tobacco had on individual and group performance of the test subjects. The objective of this experiment was to determine the advisability of prohibiting the use of tobacco from submarine operations given the extended submerged duration of missions involving nuclear-powered submarines. The test results determined that smokers showed consistently higher mean oral temperature and pulse rate, both at rest and following exercises, as well as significantly increased pulse rates over non-smokers, a marked decrease in alertness, and an increase in insomnia symptoms. However, there was no significant difference in blood pressure between smokers and non-smokers. Finally, smokers experienced "debilitative performance decrements" during the smoking prohibition, and as a consequence, this also affected the morale of non-smokers, both among the participants in the experiment as well as non-participants. Weybrew concluded smoking should be avoided because of its attendant health and relational issues, and not smoking enhances one's overall stress coping capacity (SCC). At the 1963 convention of the Cigar Institute of America, Weybrew noted: "When a smoker is forbidden to smoke he just doesn't like it. The smokers in the test got irritable, ate too much, had trouble sleeping, and personal relationships began to deteriorate." On Easter Sunday, 17 April, "Triton" sighted the Cape of Good Hope and subsequently re-entered the South Atlantic Ocean, returning to the command authority of Rear Admiral Lawrence R. Daspit (COMSUBLANT). The smoking lamp was re-lit on 18 April, with the three days of prohibition having taken a noticeable toll on crew morale. Rather than passing the word in a traditional manner, Captain Beach demonstrated the lifting of the ban by walking through the ship smoking a cigar, blowing smoke in people's faces, and asking, "Don't you wish you could do this?" He recorded in his log that "it took some 37 seconds for the word to get around." On 20 April 1960, "Triton" crossed the Prime Meridian, and on 24 April, the sealed atmosphere experiment was terminated. On the same day that the sealed atmosphere experiment was terminated, 24 April 1960, "Triton" experienced a major equipment failure. In the after torpedo room, a hydraulic line to the stern plane mechanism burst. Through the prompt action by Torpedoman's Mate Third Class Allen W. Steele, aided by Engineman Third Class Arlan F. Martin, this potentially catastrophic event was successfully contained.