The Battle of the Kentish Knock (or the Battle of the Zealand Approaches) was a naval battle between the fleets of the Dutch Republic and England, fought on 28 September 1652 (8 October Gregorian calendar), during the First Anglo-Dutch War near the shoal called the Kentish Knock in the North Sea about thirty kilometres east of the mouth of the river Thames. The Dutch fleet, internally divided on political, regional and personal grounds, proved incapable of making a determined effort and was soon forced to withdraw, losing two ships and many casualties.