In that month Tromp suddenly arrived off Dover and bombarded the defenses. The English quickly took the sea to hunt him down. As Blake was still incapacitated by his wound, the command was given to Monk. The latter, with a fleet of over a hundred ships, brought Tromp to action on June 2 (1653) in what is known as the "Battle of the Gabbard" after a shoal near the mouth of the Thames, where the action began. Tromp was this time not burdened with a convoy but his fleet was smaller in numbers than Monk's and, as he well knew, inferior in other elements of force. Accordingly, he adapted defensive tactics of a sort that was copied afterwards by the French as a fixed policy. He accepted battle to leeward, drawing off in a slanting line from his enemy with the idea of catching the English van as it advanced to the attack unsupported by the rest of the fleet, and crippling it so severely that the attack would not be pressed. As it turned out, a shift of the wind gave him the chance to fall heavily upon the English van, but a second shift gave back the weather gage to the English and the two fleets became fiercely engaged at close quarters. Blake, hearing the guns, left his sick bed and with his own available force of 18 ships sailed out to join battle. The sight of this fresh squadron flying Blake's flag, turned the fortune of battle decisively. The Dutch escaped destruction only by finding safety in the shallows of the Flemish coast, where the English ships could not follow. After this defeat the Dutch were almost at the end of their resources and sued far peace, but Cromwell's ruthless demands amounted to a practical loss of independence, which even a bankrupt nation could not accept. Accordingly, every nerve was strained to build a fleet that might yet beat the English. The latter, for their part, were equally determined not to lose the fruits of their hard won victories. Since Blake's active share in the battle of the Gabbard aggravated his wound so severely that he was carried ashore more nearly dead than alive, Monk retained actual command.