Commencing a reload of her tubes at midnight (00.00 or 24.00), "Thresher" returned to the area and continued the attack on the convoy which consisted now of only three ships: a freighter, the oiler, and an escort. At 01:18, "Thresher" fired two bow tubes at the escort and three at the leading freighter; the sub then fired her stern tubes at the oiler. Soon thereafter, "Thresher" heard at least six explosions. The escort promptly began a depth charge barrage. Returning to periscope depth, "Thresher" found the convoy had remained stubbornly afloat. She began reloading her tubes again at 01.22 and returned to the chase.