The next day, "Tirante" pulled off nearly a repeat performance of her hit-and-run raid at "Cheju". She crept into "Ha Shima" harbor, some seven miles from Nagasaki and picked out the 2,200-ton "Hakuju Maru" moored alongside a colliery. From a range of 1,000 yards, the submarine fired a "down the throat" shot at the "maru" which exploded with a roar. The second torpedo failed to detonate, but the third completed the destruction begun by the first. As shells from shore guns fell around her, "Tirante" bent on speed and cleared the area.