An opportunity soon came for putting the instructions regarding the flag into force. In May of the same year a Swedish fleet of fifteen sail, consisting of ten merchantmen bound for the Mediterranean and five ships of war convoying them, was met by Captain Owen in the _Henrietta Maria_ off the Isle of Wight. On being called upon to strike, the Swedes refused, declaring that they had been commanded by the Queen of Sweden “not to strike to any whatsoever.” Owen, reinforced by Batten, thereupon attacked them, the fight continuing till night. The Swedes suffered much loss; the colours of their vice-admiral and rear-admiral were shot away, a “great breach” was made in the vice-admiral’s ship, and their vessels were captured and taken into Portsmouth. They were afterwards released, but the Admiralty Committee expressed the opinion that the proceedings of their officers “in order to the maintenance of the kingdom’s sovereignty at sea” were to be commended, and this resolution was reported to both Houses of Parliament.[686] The question of the salute between ships of war of different nations had been brought to the front in most other maritime countries by the forcible measures taken by Charles in 1633 and later. Two years before the encounter with the Swedes in the Channel, Denmark and Sweden had regulated the ceremony, as affecting their own ships of war, in the treaty of peace then concluded between them.[687] From this time until shortly before the war with the Dutch there is little to record about the claims to the dominion of the sea. In 1649, the instructions issued to Popham, Blake, and Dean, the commanders of the fleet, included the guarding of the North Sea and the mackerel-fishing, as well as the maintenance “of the sovereignty of the Commonwealth in the sea,” all in the prescribed form.[688] In the following year the Council of State issued express commands to Blake on the subject when he was ordered to proceed against Prince Rupert and the revolted ships at Lisbon. The dominion of “these seas,” they said, had anciently and time out of mind belonged to the English nation, and the ships of all other nations in acknowledgment of that dominion had been accustomed to take down their flags “upon sight” of the Admiral of England, and not to bear them in his presence. Blake was therefore, to the best of his powers, and “as he found himself and the fleet of strength and ability,” to do his utmost endeavours to preserve the dominion of the sea, and to cause the ships of all other nations to strike their flags and keep them in in his presence, and to compel such as were refractory, by seizing their ships and sending them into port, to be punished according to the “laws of the sea,” unless they, submitted and made such reparation as he required. At the same time, although the dominion of the sea was so ancient and indubitable, and it concerned the honour and reputation of the nation to uphold it, Blake