On his way south he fell in with and captured some English merchant ships near the Berlings. Rejoiced by this booty, which he calculated would be worth forty thousand pounds to the king's service, he entered the Tagus. At Kinsale he had heard of the execution of King Charles, and had received a confirmation of his commission from the new king. He appealed to the Portuguese Government for a friendly reception. The King of Portugal owed his own throne to a successful revolt, but he was quite as much shocked by the iniquity of the English rebels as any of the longer established monarchs of the Continent. As the Commonwealth was not yet fully established, the Portuguese acted as if they thought it safe to treat it with indifference. Rupert was openly received by the king, and was allowed to make profit of his prizes. Complaints of his depredations, and outcries from the merchants trading to the Straits, whose ships were endangered by his cruisers, assailed the Council of State. In December it began to take measures to send a squadron in pursuit. Blake and Popham were ordered to consult on the measures to be taken. Almost immediately afterwards it was decided that Blake should sail alone for Lisbon, while Popham remained in the Channel. Deane had been called off for service with the army in Scotland. The squadron appointed to go with Blake was first fixed at five vessels--the =Tiger=, the =John=, the =Tenth Whelp=, the =Signet=, and the =Constant Warwick=. Before Blake was ready to sail, his force was increased to twelve vessels. There was, however, an interval of nearly three months between the decision to send him to the southward and the sailing of his squadron. In spite of the efforts of the New Admiralty Committee, the navy was not yet in a condition to provide large squadrons at very short notice. The calls upon its resources were many. In April of 1650 thirty-nine vessels were required in the Downs, or on the coasts of Ireland and Scotland, in addition to the twenty which were then cruising to the southward under the command of Popham and Blake. The establishment which the Council of State thought necessary was sixty-five vessels in all. Blake spent the two first months of 1650 at Plymouth, getting his squadron ready for sea. Early in March he made his appearance off the mouth of the Tagus, with a fleet strong enough to be too much, not only for Rupert, but for the feeble kingdom of Portugal. He had explicit instructions, which were confirmed and extended when Popham joined in April, to treat Rupert as a pirate, that is to say, as an enemy of the human race, who was not entitled to receive asylum. His orders were to point this out to all princes in whose ports he might meet the Royalist admiral. If they refused to take the same view, then Blake was authorised to attack Prince Rupert, even in the harbour of a State not at war with England--to act, in fact, on the principle that whoever treated Rupert as a friend was an enemy of England.