the attack group. At 15:40 on 19 July 1945, Bugara′s lookouts sighted a mast on the horizon and closed with it at full speed but lost the contact. However, 20 minutes later, her lookouts again sighted masts, this time of ships making up a convoy, as well as what Bugara identified as a Japanese periscope at a range of . Schade ordered Bugara to dive in order to reverse course and then surface at flank speed. The supposed Japanese periscope turned out to be that of Brill, also chasing the convoy. Schade tried to ascertain Brill′s attack position so that the two submarines could coordinate their attack, but could not get Brill to answer Bugara′s challenge,” so the submarines began separate approaches to the convoy without a set plan of attack. At 22:05, Bugara picked up several contacts on radar at a range of and went ahead at full speed at . At nearly the same time, Bugara received information from Dodge that the submarines and were on her port flank, with Brill and Bugara on the starboard. Dodge announced that Brill was going in to attack, and Schade radioed back that Bugara would follow Brill in. Bugara fired nine torpedoes into the Japanese convoy, including two at a small engines-aft tanker at a range of , two at a second small engines-aft tanker at a range of , two at a small cargo ship (known to the Americans as a "sea truck") at a range of , one at an escorting patrol craft at a range of , and two at a large trawler (which Bugara assumed was an escort), at a range of . Brill also attacked the convoy, but none of Bugara′s or Brill′s torpedoes hit. Both Schade and Dodge concluded that their torpedoes ran normally but had passed underneath their targets. The Japanese did not counterattack the submarines. 20 July At 14:45 on 20 July 1945, Bugara′s lookouts sighted a junk and closed to get alongside. After taking off the junk's crew of six natives, Bugara sent a boarding party aboard the junk for inspection. The boarding party found that the junk was carrying bags of sugar from Singapore to Bangkok, Thailand, both Japanese-controlled ports. The junk′s crew claimed that the junk's cargo was destined for China, not the Japanese. Although unconvinced, Bugara′s crew kept all of the junk crew's papers for later analysis by intelligence