 The biggest sea battle of the Second Anglo-Dutch War and in the age of sail was undoubtedly a Dutch victory although both sides initially claimed they had won.However, the Dutch fleet had found it difficult to overcome an English fleet that, for the first three days of fighting, was much weaker in numbers than it, and the Dutch had been in danger of defeat on the second and particularly the fourth day.The Dutch had also lost more men killed, mainly on the four ships that had been burned.