Yet it would be more accurate to say that the success of William, and with it the success of Europe against Louis XIV.

in the War of the League of Augsburg, was due to the mistakes and failure of the French naval campaign in 1690; though in that campaign was won the most conspicuous single success the French have ever gained at sea over the English.

As regards the more striking military operations, it is curious to remark that Tourville sailed the day after William left Chester, and won Beachy Head the day before the battle of the Boyne; but the real failure lay in permitting William to transport that solid body of men without hindrance.

It might have been favorable to French policy to let him get into Ireland, but not with such a force at his back.

The result of the Irish campaign was to settle William safely on the English throne and establish the Anglo-Dutch alliance; and the union of the two sea peoples under one crown was the pledge, through their commercial and maritime ability, and the wealth they drew from the sea, of the successful prosecution of the war by their allies on the continent.
The year 1691 was distinguished by only one great maritime event.