As soon as the troops were on board ship, sail was made, and the vessels dropped down the stream. The wind was very light, and it was not until thirty hours after starting that the little fleet arrived off Sluys. The town, which was nearly egg-shaped, lay close to the river, which was called the Zwin. At the eastern end, in the centre of a detached piece of water, stood the castle, connected with the town by a bridge of boats. The Zwin formed the defence on the north side, while the south and west were covered by a very wide moat along the centre of which ran a dyke, dividing it into two channels. On the west side this moat extended to the Zwin, and was crossed at the point of junction by the bridge leading to the west gate. The walls inclosed a considerable space, containing fields and gardens. Seven windmills stood on the ramparts. The tower of the town-hall, and those of the churches of Our Lady, St. John, and the Grey Friars rose high above the town. The ships from Flushing and Bergen-op-Zoom sailed up together, and the 800 men who landed were received with immense enthusiasm by the inhabitants, who were Protestants, and devoted to the cause of independence. The English were under the command of Sir Roger Williams, who had already seen so many years of service in the Low Countries; and under him were Morgan, Thomas Baskerville, and Huntley, who had long served with him. Roger Williams was an admirable man for service of this kind. He had distinguished himself by many deeds of reckless bravery. He possessed an inexhaustible fund of confidence and high spirits, and in his company it was impossible to feel despondent, however desperate the situation. The citizens placed their houses at the disposal of their new allies, handsome quarters were allotted to the officers, and the soldiers were all housed in private dwellings or the warehouses of the merchants. The inhabitants had already for some days been working hard at their defences, and the English at once joined them in their labours, strengthening the weak portions of the walls, mounting cannon upon the towers, and preparing in all ways to give a warm reception to the Spaniards.