Initial sighting During the early morning of July 25, Rear-Admiral Tsuboi's squadron arrived at the rendezvous point near Pungdo island without sighting
Yaeyama or
Ōshima. Speculating that their commanders had mistakenly headed for the main Island of Pungdo, which was located just under to the south, Tsuboi set course for the island. Approaching Pungdo at 6.30 am, the Japanese vessels spotted two warships heading south-west; they turned out to be the Chinese cruiser
Jiyuan and the torpedo gunboat
Kwang-yi. Tsuboi correctly assumed them to be the escorts of the Chinese troop transports. At the same time Tsuboi sought to continue to investigate why the two Japanese warships from Chemulpo had not arrived at the prearranged location. For these reasons, Tsuboi made a straight course for the Chinese warships, simultaneously sounding general quarters. The commander of
Jiyuan, Captain Fang Boqian, had spotted the Japanese warships at approximately the same time and was alarmed by their appearance. The Chinese ships increased their speed and headed south-west in order to escape the closed waters of
Asan Bay. Noticing the Chinese maneuver, the Japanese cruisers in turn increased their speed to , in line ahead formation with
Yoshino leading
Naniwa and
Akitsushima. Tsuboi clearly desired to outmaneuver the Chinese and prevent their escape to open water; however, realizing that this would not be possible, he executed a turn to port bearing west, in order to converge with the Chinese.
Engagement At around 7:45 am the distance between the flagship
Yoshino and
Jiyuan was roughly ; for a short while the Japanese and Chinese warships were steaming on a convergent heading, observing each other, but at 7.52 am the cruiser
Naniwa unexpectedly opened fire on
Jiyuan. Immediately after
Naniwa opened fire,
Yoshino and
Akitsushima followed suit.
Yoshino and
Naniwa concentrated their fire on the leading
Jiyuan, while
Akitsushima concentrated its fire on the torpedo gunboat
Kwang-yi, which was trailing over a kilometre behind the stern of the Chinese cruiser. Although the Chinese warships had not been caught by surprise and soon returned fire, the Japanese had gained the advantage. The first projectiles fired by
Yoshino and
Naniwa hit
Jiyuans
conning tower, demolishing it and damaging the steering mechanism. The next volley of shells then put both forward heavy
barbette-mounted guns out of action. Furthermore, the hail of Japanese shelling started numerous fires in the midship section, which, though relatively minor, caused panic among the Chinese gun crews on the upper deck. It was only through the intervention of some of the officers, armed with revolvers, that the gunners were rounded up and returned to their positions. After getting the situation under control,
Jiyuan managed to escape to the open sea; its crew soon repaired the steering mechanism, which allowed the cruiser to regain her manoeuvrability.
Destruction of Kwang-yi Kwang-yi, following
Jiyuan, did not fare as well. Like
Jiyuan, the vessel was hit at the beginning of the battle; however, the damage inflicted by the Japanese gunfire was much more serious. Shells fired by
Akitsushima penetrated the hull of the warship below the waterline at least once and damaged her boiler room. The heavily damaged
Kwang-yi was rapidly taking on water; as a result, Captain Lin Kuohsiang ordered the ship to be beached. Enveloped in smoke and steam, and with fires raging on board,
Kwang-yi turned southeast and stranded herself on the shore on some shoals, being fired upon by
Naniwa all the while. After being abandoned by her crew, the wreck of
Kwang-yi was destroyed by raging fires and internal explosions. At least 37 crew members were killed, while another 71, including the captain, Lin Kuohsiang, reached the shore. After a failed attempt to join Chinese troops at Asan, they were taken on board the
Royal Navy torpedo cruisers and at the end of July and transported to
Chefoo.
Pursuit of Jiyuan The destruction of
Kwang-yi took the Japanese squadron no more than a quarter of an hour and did not hinder the pursuit of
Jiyuan. The plight of the single Chinese cruiser seemed dire, largely because the Japanese had the advantage of speed. At about 8.10 am,
Yoshino and
Naniwa were almost abeam of the escaping Chinese cruiser, and when
Naniwa turned to close on her, Captain Fang contemplated surrendering his vessel, considering further combat to be pointless. At this moment, however, an unexpected turn of events took place:
Yoshino spotted smoke from on the horizon from two unknown vessels which were probably heading towards Asan. It later turned out that they were the transport ship
Kowshing, which had sailed from Taku carrying Chinese troops, and the gunboat
Tsao-Kiang, which had departed from Weihaiwei with mail and orders. Their arrival turned Japanese attention away from
Jiyuan, which took the opportunity to increase to full speed and escape heading west, away from the Japanese squadron. At the same moment, after spotting the Japanese warships,
Tsao-Kiang also turned and headed back to Weihaiwei. Whereas,
Kowshing continued on course to Asan. In light of the appearance of the two new vessels, Rear-Admiral Tsuboi relinquished his chase of
Jiyuan and decided to instead investigate the unknown vessels approaching from the north-west. Tsuboi had correctly suspected that
Kowshing was carrying reinforcements for the Chinese forces at Asan, the prevention of which was the Flying Squadron's main objective.
Re-engagement of the pursuit The three Japanese cruisers intercepted
Kowshing, and there was a break in the pursuit which lasted until 9.50 am. While
Naniwa started to search the ship and the events surrounding the sinking of
Kowshing unfolded,
Yoshino and the
Akitsushima re-engaged and began to pursue the remaining two ships. Both Japanese cruisers headed at full speed after the Chinese warships which were trying to escape to Weihaiwei. The gunboat
Tsao-Kiang was caught at 11.37 am and surrendered without a fight to
Akitsushima. After 11.40 am, only
Yoshino continued the chase after the remaining ship,
Jiyuan.
Yoshino, due to the advantage of speed, quickly closed the distance and at 12.05 pm, the Japanese cruiser commenced firing at
Jiyuan with her forward guns at a distance of approximately . Captain Fang Boqian steered the cruiser among some shoals, which were dangerous and poorly-charted, however this risky move saved the ship from destruction as the Japanese were not in possession of accurate maps of the area and they feared risking running aground on the shoals. Consequently, at 12.43 pm,
Yoshino turned back towards the Korean coast and
Jiyuan reached Weihaiwei in the morning of July 26. ==
Kowshing Incident==