There are a number of naval fiction books that feature the Battle of the Capes where the French Fleet under the Comte De Grasse defeated the British under Admiral Graves. Invariably they refer to the surrender of the British Army under Cornwallis at Yorktown as resulting from this action but little detail is given.
This new book George Washington’s Great Gamble by James L. Nelson explores both the land and sea events that led up to the battle. Starting with the arrival of the initial French forces and the defection of Benedict Arnold it follows the manouveres and disposition of the forces on both sides. It is clear from the quoted correspondence that Washington was clear throughout that the British could not be defeated while they had naval superiority and could move there forces by sea and that therefore the intervention of a French fleet would be vital.