But it was necessary for Vane's purposes not only to show the energy of the Parliament, but to free it from the control of the army. His aim was to raise in the navy a force devoted to the House, and to eclipse the glories of Dunbar and Worcester by yet greater triumphs at sea. With this view the quarrel with Holland had been carefully nursed; a "Navigation Act," prohibiting the importation in foreign vessels of any but the products of the countries to which they belonged, struck a fatal blow at the carrying trade from which the Dutch drew their wealth; and fresh debates arose from the English claim to salutes from all vessels in the Channel. In May 1652 the two fleets met before Dover, and a summons from Blake to lower the Dutch flag was met by the Dutch admiral, Tromp, with a broadside. The States-General attributed the collision to accident, and offered to recall Tromp; but the English demands rose at each step in the negotiations till war became inevitable. The army hardly needed the warning conveyed by the introduction of a bill for its disbanding to understand the new policy of the Parliament. It was significant that while accepting the bill for its own dissolution the House had as yet prepared no plan for the assembly which was to follow it; and the Dutch war had hardly been declared when, abandoning the attitude of inaction which it had observed since the beginning of the Commonwealth, the army petitioned, not only for reform in Church and State, but for an explicit declaration that the House would bring its proceedings to a close. The Petition forced the House to discuss a bill for "a New Representative," but the discussion soon brought out the resolve of the sitting members to continue as a part of the coming Parliament without re-election. The officers, irritated by such a claim, demanded in conference after conference an immediate dissolution, and the House as resolutely refused. In ominous words Cromwell supported the demand of the army. "As for the members of this Parliament, the army begins to take them in disgust. I would it did so with less reason." There was just ground, he urged, for discontent in their selfish greed of houses and lands, the scandalous lives of many, their partiality as judges, their interference with the ordinary course of law in matters of private interest, their delay of law reform, above all in their manifest design of perpetuating their own power. "There is little to hope for from such men," he ended with a return to his predominant thought, "for a settlement of the nation."