After 1597 the war began to die down. In 1598 the Royal Navy was idle, and in 1599 it did little beyond show how rapidly a squadron could be fitted for sea by the Navy Office when the queen called upon it to exert itself. A squadron of twenty vessels was "rigged, victualled, and furnished to sea in twelve days." Sir William Monson records that the feat excited the surprise and admiration of foreigners. In 1600, again, nothing was done. Spain and England were, in fact, both becoming exhausted. War had put a stop to what was then our most lucrative branch of commerce, and it had been found by experience that privateering did not compensate for the want of peaceful industry. Negotiations for peace were begun, and continued throughout the years 1599 and 1600. In the latter year three ships were sent to the Isles under the command of Sir Richard Levison, but the King of Spain took care to provide the _flota_ with a powerful escort, and Sir Richard returned home without so much as a single prize. The negotiations for peace ended for the time in failure, but the naval war did not revive with any energy. In 1601 a Spanish squadron landed three thousand five hundred soldiers in Ireland for the purpose of co-operating with the Earl of Tyrone, who was then in full rebellion against Queen Elizabeth. This invasion of her dominions roused the queen to fresh exertions. She despatched a squadron under the command of Sir Richard Levison to the coast of Ireland, to prevent the Spaniards from reinforcing the detachment they had already landed. He had with him only five ships, but they proved sufficient for the work. The Spanish fleet had returned home after disembarking Don Juan del Aguila with his three thousand five hundred men, but a squadron which had followed with a reinforcement of seven hundred men was attacked in Kinsale harbour with success; and although the failure of the Spanish invasion was mainly due to the want of co-operation on the part of Tyrone, and the energy of the Lord Deputy Mountjoy, the navy rendered material assistance by cutting the communications with Spain.