On October 11, the battle was not going well for the Americans when the sun set. Aware that he could not defeat the British fleet, Arnold decided to withdraw. He managed to sneak his fleet past (and through) the British fleet during the night and attempted to run for the cover of the shore batteries situated at the American-held fort at Crown Point at the south end of the lake. Unfortunately, the weather did not cooperate, and the Americans were caught short of their goal.
On October 12, after sailing only 8 miles, Arnold drove one ship, the Providence ashore in the shallow water of Buttonmold Bay off Schuyler Island where the heavier British ships could not follow, and the American ship was then stripped of guns, powder and everything else of use. The New Jersey also ran aground while the crew from the Lee did likewise.
On October 13, the British fleet finally caught up to the American fleet off Split Rock where the Washington was captured and the Congress sank attempting to flee. Arnold led about 200 men from the lost ships on foot to Crown Point where the remaining ships Trumbull, Enterprise, Revenge, New York, and Liberty finally reached safety. Arnold was forced to burn his remaining ships and withdrew further towards Ticonderoga.
Although the British had cleared the lake of American ships, establishing naval control, snow was already falling as Arnold and his men reached Ticonderoga on October 20. The British commander, Gen. Guy Carleton, had no choice but to defer the attacks on Crown Point and Fort Ticonderoga and withdrew to a winter camp in Canada by early November, a decision with profound consequences.
The next year, a better-prepared American army would eventually stop the British advance at Saratoga and bring France into the war on the American side.