Edward had collected on the coast of Sussex a fleet intended to oppose them, and had summoned all the military forces of the south of England to accompany him; and as soon as he heard that the Spaniards were about to put to sea he set out for Winchelsea, where the fleet was collected.
The queen accompanied him to the sea-coast, and the Black Prince, now in his twentieth year, was appointed to command one of the largest of the English vessels.
The fleet put to sea when they heard that the Spaniards had started, and the hostile fleets were soon in sight of each other. The number of fighting men on board the Spanish ships was ten times those of the English, and their vessels were of vastly superior size and strength. They had, moreover, caused their ships to be fitted at Sluys with large wooden towers, which furnished a commanding position to their cross-bowmen. The wind was direct in their favor, and they could have easily avoided the contest, but, confiding in their enormously superior force, they sailed boldly forward to the attack.
The king himself led the English line, and directing his vessel toward a large Spanish ship, endeavored to run her down. The shock was tremendous, but the enemy's vessel was stronger as well as larger than that of the king; and as the two ships recoiled from each other it was found that the water was rushing into the English vessel, and that she was rapidly sinking. The Spaniard passed on in the confusion, but the king ordered his ship to be instantly laid alongside another which was following her, and to be firmly lashed to her. Then with his knights he sprang on board the Spaniard, and after a short but desperate fight cut down or drove the crew overboard. The royal standard was hoisted on the prize, the sinking English vessel was cast adrift, and the king sailed on to attack another adversary.
The battle now raged on all sides. The English strove to grapple with and board the enemy, while the Spaniards poured upon them a shower of bolts and quarrels from their cross-bows, hurled immense masses of stone from their military engines, and, as they drew alongside, cast into them heavy bars of iron, which pierced holes in the bottom of the ship.
Walter was on board the ship commanded by the Black Prince. This had been steered toward one of the largest and most important of the Spanish vessels. As they approached, the engines poured their missiles into them. Several great holes were torn in the sides of the ship, which was already sinking as she came alongside her foe.
"We must do our best, Sir Walter," the prince exclaimed, "for if we do not capture her speedily our ship will assuredly sink beneath our feet."
The Spaniard stood far higher above the water than the English ship, and the Black Prince and his knights in vain attempted to climb her sides, while the seamen strove with pumps and buckets to keep the vessel afloat. Every effort was in vain. The Spaniard's men-at-arms lined the bulwarks, and repulsed every effort made by the English to climb up them, while those on the towers rained down showers of bolts and arrows and masses of iron and stone. The situation was desperate, when the Earl of Lancaster, passing by in his ship, saw the peril to which the prince was exposed, and, ranging up on the other side of the Spaniard, strove to board her there. The attention of the Spaniards being thus distracted, the prince and his companions made another desperate effort, and succeeded in winning their way on to the deck of the Spanish ship just as their own vessel sank beneath their feet; after a few minutes' desperate fighting the Spanish ship was captured.
The English were now everywhere getting the best of their enemies. Many of the Spanish vessels had been captured or sunk, and after the fight had raged for some hours, the rest began to disperse and seek safety in flight. The English vessel commanded by Count Robert of Namur had toward night engaged a Spanish vessel of more than twice its own strength. His adversaries, seeing that the day was lost, set all sail, but looking upon the little vessel beside them as a prey to be taken possession of at their leisure, they fastened it tightly to their sides by the grappling-irons, and spreading all sail, made away. The count and his men were unable to free themselves, and were being dragged away, when a follower of the count named Hennekin leaped suddenly on board the Spanish ship. With a bound he reached the mast, and with a single blow with his sword cut the halyards which supported the main-sail. The sail fell at once. The Spaniards rushed to the spot to repair the disaster which threatened to delay their ship. The count and his followers, seeing the bulwarks of the Spanish vessel for the moment unguarded, poured in, and after a furious conflict captured the vessel. By this time twenty-four of the enemy's vessels had been taken, the rest were either sunk or in full flight, and Edward at once returned to the English shore.
The fight had taken place within sight of land, and Queen Philippa, from the windows of the abbey, which stood on rising ground, had seen the approach of the vast Spanish fleet, and had watched the conflict until night fell. She remained in suspense as to the result until the king himself, with the Black Prince and Prince John, afterward known as John of Gaunt, who, although but ten years of age, had accompanied the Black Prince in his ship, rode up with the news of the victory.