Togo opened fire on the Chinese warship, which turned out to be the sloop Tsao Kiang. Without more ado, the latter ran away at full speed, leaving her charge to fend for herself. Togo was reluctant to interfere with a ship flying the Red Ensign, but he patently could not ignore her military passengers. Holding her under his guns, Togo sent away a boarding party, which returned with the news that the trooper was the 2,134-ton Kow Shing, owned by the Indo-China Steam Navigation Company of London and commanded by Captain T. R. Galsworthy. She was under charter to the Chinese Government and had on board 1,500 Chinese soldiers, fourteen field guns and their ammunition and a German artillery officer, Captain C. von Hanneken. Galsworthy protested loudly against his detention, declaring that he was on a lawful voyage, Britain and Japan not being at war, and that Togo had no right to hold his ship. Galsworthy was technically correct, but Togo was not about to allow 1,500 fully armed Chinese troops to land on Korean soil. He demanded surrender.
The situation on board the Kow Shing was chaotic. Galsworthy was in favour of surrendering, but he and his officers were surrounded by Chinese with loaded guns, who made no secret of what would happen to them it they refused to take the ship into Asan. The Chinese general argued that the Japanese would not dare sink a ship under the British flag, but Galsworthy was not convinced. Much as he feared the Chinese guns, he feared the wrath of his owners more. He declined to continue the voyage. It was stalemate.
This dangerous confrontation went on for nearly four hours, with the Japanese threatening, the Chinese obstinately refusing to surrender and Galsworthy and the Kow Shing’s British officers caught in the middle. Then Togo did something of which his Royal Navy mentors would not have approved. He torpedoed the helpless merchantman, pounded her with his big guns and, when she sank, machine-gunned the troops struggling in the water. Only Captain Galsworthy, his chief officer, his boatswain, Captain von Hanneken and 41 Chinese survived.
Togo’s ill-judged and brutal action elicited a howl of protest from Admiral Fremantle, commanding the British Far Eastern Fleet, and, later, rumbles of disapproval from the Foreign Office, but as far as Britain was concerned the incident was soon closed. For the Chinese, however, the attack on the Tsi Yuen and Kwang Yi, followed by the slaughter of more than a thousand of their troops in the Kow Shing, could mean only one thing: China and Japan were at war.