From an early stage in the conflict the control of the fleet passed into the hands of the Parliament. In the summer of 1642, when the Earl of Northumberland, the Lord High Admiral, was laid aside by illness, the Parliament succeeded, with his connivance and assistance, in placing the Earl of Warwick in actual command; Sir John Pennington, the nominee of Charles, having to stand aside.[681] Under the management of its new masters the navy rapidly became a powerful and efficient instrument for the defence of the realm, as was shown at the opening of the Dutch war. The general instructions given by the Parliament to its naval officers respecting the honour of the flag and the sovereignty of the sea were almost identical with those which had been issued to the Earls of Lindsey and Northumberland, but the phraseology was sometimes a little varied. On 5th April 1643 the Parliament, in view of the attempt organised by Queen Henrietta Maria to smuggle into England military supplies from the Netherlands for the use of the royalists, ordered the Earl of Warwick, if he met with “any foreign forces, ships, or vessels, as Spaniards, French, Danes, Dunkirkers, or any other whatsoever, making towards the coasts of England, Ireland, or any other of his Majesty’s dominions,” to command them, “according to the usual manner, to strike their flags or top-sails,” and cause them to be examined and searched for soldiers or munitions of war. If they refused to strike, he was “to compel them thereunto by force of arms and surprise, and to take all such ships and vessels, or otherwise to burn, sink, or destroy them.”[682] In the following year the Committee for the Admiralty instructed Vice-Admiral Batten, who was in command of the fleet, “upon all occasions, as you shall be able, to maintain _the Kingdom’s_ sovereignty and regality in the seas.”[683]