He had expected to have to fight the Japanese on his outward voyage, and he knew that there was a still greater chance of meeting them on his way back down the bay. He had a few white officers with him. On board his flagship, the armour-clad "Ting-yuen" was a German artillery officer, Major von Hanneken. On the other battleship was Commander McGiffen, formerly of the United States navy, nominally second in command to the Chinese captain of the "Chen-yuen," but practically acting as her commander. On some of the other ships there were a few British-born engineer or gunnery officers, and some of the latter had been petty officers in the English navy. By the advice of these non-Chinese officers Ting had done something to remedy the defects of his fleet.

A good deal of woodwork had been cut away and thrown overboard, though far too much of it still remained, and on several ships there was a dangerous quantity of carved ornamental wood on the upper works, much of it all the more inflammable because it was gilded and lacquered in bright colours which it was the practice to clean with oiled rags. The thin steel roofs of barbettes, and the shields of many of the guns, had been removed, as the "Tsi-yuen's" experiences in the fight with the "Naniwa Kan" had shown that such light steel did not keep out the shells of the Japanese quick-firers, but served only to ensure their bursting with deadly effect. Sometimes a gun-shield had burst a shell, which if there had been no such attempt at protection would perhaps have passed harmlessly over the heads of the gunners. Round the barbettes of the ships sacks of coal were stacked as an emergency method of strengthening these defences. Of coal the fleet had an abundance, but it was woefully short of ammunition, and much of what was on board was old and defective. If Ting had had more professional knowledge and training, he would have been more anxious as to the probable result of a battle.

Where were Admiral Ito and the Japanese fleet? Early in August he had crossed the Yellow Sea with his cruiser squadron, and shown himself before Port Arthur and Wei-hai-Wei. He drew the fire of the seaward forts at long range, and replied with a few shots, but he made no attack. He was engaged only in a reconnaissance, and was quite satisfied when he ascertained that the Chinese ships were remaining in harbour. He then returned to the Korean side of the Yellow Sea, and till nearly the middle of September was employed in escorting the convoys of transports from Japan, and protecting the disembarkation of the reinforcements they were bringing to Korea.

On Friday, 14 September—the same day on which the Chinese convoy with the reinforcements for Manchuria left Taku—Ito had completed his work in connection with the transport of Japanese troops, having landed the last detachments at Chinampo in the estuary of the Ta-tung River. Higher up the river General Nodzu's army was attacking the Chinese walled town of Ping-yang. Ito sent his gunboats up the Ta-tung to co-operate with Nodzu, and leaving his torpedo boats at the river mouth, went to sea with his fleet. He steered for the mouth of the Yalu River, intending to reconnoitre the Chinese positions there, and obtain information as to the reported concentration of troops near the river mouth, but under the belief that the enemy's fleet was still at Port Arthur, Admiral Ting was just as ignorant of his enemy's position and movements. Early on the morning of Monday, 17 September, he had expended some ammunition in practice at floating targets off the mouth of the Yalu. The fleet had then anchored, and the men were given a rest while the cooks got dinner ready. This was about 11 a.m. A little later there was unexpected news, that interrupted the cooking. The look-outs at the mastheads of the anchored fleet reported that the smoke of many steamers was rising above the horizon far away to the south-westward. It was a bright sunny day, with a perfectly smooth sea, clear air, and a blue sky, and the look-out men could easily make out that the smoke rising above the skyline came from a long line of funnels. Admiral Ting had no doubt it was the Japanese fleet, and he gave orders to weigh anchor and clear for action.

Early that morning Admiral Ito had heard from coasting craft that the Chinese fleet was at sea, and one trader retailed to him a rumour that the fleet was anchored behind Hai-Yang island, where there was a sheltered roadstead. But on reaching Hai-Yang he found only a few fishing-boats lying behind the island. He continued his voyage towards the Yalu, now anticipating a meeting with Ting, unless the Chinese admiral had already run down the other coast of the bay, and so passed him at a distance during the previous night.

Ito's fleet was steaming in line ahead, and was organized in two squadrons. The van squadron was led by his second in command, Admiral Tsuboi, who had hoisted his flag on the fast cruiser "Yoshino." After her in succession came the cruisers "Takachico," "Akitsushima," and "Naniwa Kan." Then there was a considerable interval between the van squadron and the leading ship of the main squadron, the cruiser "Matsushima," flying Count Ito's flag. Next to her came the armoured cruiser "Chiyoda"; then the "Matsushima's" two sister ships, the cruisers "Ikitsushima" and "Hashidate." The four ships of the van squadron and the four leading ships of the main squadron represented the chief strength of Ito's fleet, his eight modern cruisers. After them came the two old ironclads "Hiyei" and "Fuso," the gunboat "Akagi," and the small armed merchant steamer "Saikio Maru." The long line of warships steaming swiftly through the sunlight must have looked more like a fleet arrayed for some festive occasion than squadrons prepared for imminent battle, for every ship was painted a brilliant white, with the gilded device of the chrysanthemum forming a broad golden shield on her bows, and the red-and-white sun flag of Japan flew from every masthead.

At half-past eleven, half an hour after the Chinese had perceived the approach of the Japanese fleet, the "Yoshino," which was leading the advancing line of the van squadron, signalled that there was a dense mass of black smoke on the horizon inshore. This was the smoke produced by Ting's furnaces, as his ships hurriedly stoked their fires to get full pressure on the boilers. Then the Chinese fleet was seen coming out and forming in line of battle.

Admiral Ting formed his ships in line abreast, that is side by side with every bow towards the enemy. In the centre were the two little battleships, with the armoured cruisers, "Lai-yuen" and "King-yuen," to right and left of them. On each flank of these four heavy ships there was a group of three unarmoured cruisers—the "Ching-yuen," "Chao-yung," and "Yang-wei"—on the right; and the "Chi-yuen," "Kwang-chia," and "Tsi-yuen," on the left. These were the ten ships on which he relied to bear the brunt of the fighting. Away to the left flank and rear of the line, and nearer the shore, was the small, armour-clad "Ping-yuen," the corvette "Kwang-ping," and four torpedo boats. The Chinese fleet was under easy steam. The ships were painted a dull black, but had a large amount of gilding and colour on their bows, upper works, and deck-houses, and they were all dressed with flags. The decks had been strewn with sand, to prevent accidents by men slipping, and flooded with water from the fire hose to minimize the danger of fire.