in the fortress at Luchiehtsui, but several guns remained on operation, and Japanese gunners quickly set to work to bring them to bear on the trapped fleet. The Chinese ships bombarded Japanese forces as they advanced on the city's defenses. A group of ten Japanese torpedo boats broke into the harbor on the night of 4/5 February and hit Dingyuan with a torpedo on the port side toward the stern. The attack inflicted serious damage and the crew's damage control efforts failed to contain the flooding, hampered by leaking watertight doors. They got steam up in the boilers and began to get underway, but with the uncontrolled flooding threatening to sink the ship, the crew was forced to ground her to prevent her from sinking. The ship was thereafter employed as a stationary artillery battery and Ding shifted his flag to Zhenyuan. Two of the attacking torpedo boats were discovered having been disabled in the previous night's action at dawn. The next night, the torpedo boats made another assault on the Chinese fleet, sinking a cruiser, a training ship, and an auxiliary vessel. By 9 February, the Japanese had seized the fortifications that overlooked the rest of the harbor. They used the position to bombard the crippled Dingyuan with field artillery, further damaging the vessel. With their position in the harbor no longer tenable and most of the vessels damaged—Zhenyuan had also been badly damaged and was no longer seaworthy—Ding decided to scuttle Dingyuan the next day and then surrender. The decision provoked many of the senior officers of the Beiyang Fleet to commit suicide, including the ship's commander, Captain Liu Buchan. The exact nature of the crew's efforts to disable the vessel are unclear. Some reports indicate that a mine detonated amidships, and observers aboard the British protected cruiser noted seeing a large explosion aboard Dingyuen. Photographic evidence, which shows the vessel aground in shallow water and with a gaping hole amidships, supports these reports, as does the observations of the British Vice Admiral Edmund Fremantle, who inspected the fleet shortly after the battle. Replica and rediscovery The Chinese government constructed a replica of Dingyuan at Weihai to commemorate both the original vessel and the Beiyang Fleet during the war; the vessel, built on a 1:1 scale, is open as a museum ship. Work on the vessel began in 2003. On 2 September 2019 it was announced that the