The Battle of the Chesapeake, also known as the Battle of the Virginia Capes or simply the Battle of the Capes, was a fleet action which took place near the mouth of the Chesapeake Bay on 5 September 1781 during the American Revolutionary War. It was fought between a British fleet led by Rear-Admiral of the Red Sir Thomas Graves and a French fleet under Lieutenant général des armées navales François Joseph Paul de Grasse. The strategically decisive battle prevented the Royal Navy from reinforcing or evacuating the besieged British army of Lieutenant-general Lord Cornwallis at Yorktown, Virginia. With its victory, the French navy was able to gain control over local sea lanes and provided the Franco-American besiegers with siege artillery and troops reinforcements. These proved decisive in securing Cornwallis' surrender, which led to British acknowledgement of American independence.
De Grasse had the option to attack British forces in either New York or Virginia; he opted for Virginia, arriving at the Chesapeake at the end of August. Graves learned that de Grasse had sailed from the West Indies for North America and that French Admiral de Barras had also sailed from Newport, Rhode Island. He concluded that they were going to join forces at the Chesapeake. He sailed south from Sandy Hook, New Jersey, outside New York Harbor, with 19 ships of the line and arrived at the mouth of the Chesapeake early on 5 September to see de Grasse's fleet already at anchor in the bay. De Grasse hastily prepared most of his fleet for battle—24 ships of the line—and sailed out to meet him. The two-hour engagement took place after hours of maneuvering. The lines of the two fleets did not completely meet; only the forward and center sections fully engaged. The battle was consequently fairly evenly matched, although the British suffered more casualties and ship damage, and it broke off when the sun set. The British tactics have been a subject of debate ever since.
The two fleets sailed within view of each other for several days, but de Grasse preferred to lure Graves away from the bay where de Barras was expected to arrive carrying vital siege equipment. He broke away from the British on 13 September and returned to the Chesapeake, where de Barras had since arrived. Graves returned to New York to organize a larger relief effort; this did not sail until 19 October, two days after Cornwallis surrendered.
Background
During the early months of 1781, both pro-British and rebel separatist forces began concentrating in Virginia, a state that had previously not had action other than naval raids. The British forces were led at first by the turncoat Benedict Arnold, and then by William Phillips before General Charles, Earl Cornwallis, arrived in late May with his southern army to take command.
In June, Cornwallis marched to Williamsburg, where he received a confusing series of orders from General Sir Henry Clinton that culminated in a directive to establish a fortified deep-water port (which would allow resupply by sea).Ketchum, pp. 126–157. In response to these orders, Cornwallis moved to Yorktown in late July, where his army began building fortifications.Grainger, pp. 44, 56. The presence of these British troops, coupled with General Clinton's desire for a port there, made control of the Chesapeake Bay an essential naval objective for both sides.Ketchum, p. 197Linder, p. 15.
On 21 May, Generals George Washington and Rochambeau, respectively the commanders of the Continental Army and the Expédition Particulière, met at the Vernon House in Newport, Rhode Island to discuss potential operations against the British and Loyalists. They considered either an assault or siege on the principal British base at New York City, or operations against the British forces in Virginia. Since either of these options would require the assistance of the French fleet, then in the West Indies, a ship was dispatched to meet with French Lieutenant général de Grasse who was expected at Cap-Français (now known as Cap-Haïtien, Haiti), outlining the possibilities and requesting his assistance.Mahan, p. 387 Rochambeau, in a private note to de Grasse, indicated that his preference was for an operation against Virginia. The two generals then moved their forces to White Plains, New York, to study New York's defenses and await news from de Grasse.Mahan, p. 388
Arrival of the fleets
De Grasse arrived at Cap-Français on 15 August. He immediately dispatched his response to Rochambeau's note, which was that he would make for the Chesapeake. Taking on 3,200 troops, De Grasse sailed from Cap-Français with his entire fleet, 28 ships of the line. Sailing outside the normal shipping lanes to avoid notice, he arrived at the mouth of the Chesapeake Bay on 30 August, and disembarked the troops to assist in the land blockade of Cornwallis.Ketchum, pp. 178–206 Two British frigates that were supposed to be on patrol outside the bay were trapped inside the bay by De Grasse's arrival; this prevented the British in New York from learning the full strength of de Grasse's fleet until it was too late.Mahan, p. 391
British Admiral of the Blue Sir George Rodney, who had been tracking De Grasse around the West Indies, was alerted to the latter's departure, but was uncertain of the French admiral's destination. Believing that de Grasse would return a portion of his fleet to Europe, Rodney detached Rear-Admiral of the Blue Sir Samuel Hood with 14 ships of the line and orders to find de Grasse's destination in North America. Rodney, who was ill, sailed for Europe with the rest of his fleet in order to recover, refit his fleet, and to avoid the Atlantic hurricane season.Mahan, p. 389
Sailing more directly than de Grasse, Hood's fleet arrived off the entrance to the Chesapeake on 25 August. Finding no French ships there, he then sailed for New York. Meanwhile, his colleague and commander of the New York fleet, Rear-Admiral of the Red Sir Thomas Graves, had spent several weeks trying to intercept a convoy organized by John Laurens to bring much-needed supplies and hard currency from France to Boston.Grainger, p. 51 When Hood arrived at New York, he found that Graves was in port (having failed to intercept the convoy), but had only five ships of the line that were ready for battle.
De Grasse had notified his counterpart in Newport, Barras, of his intentions and his planned arrival date. Barras sailed from Newport on 27 August with 8 ships of the line, 4 frigates, and 18 transports carrying French armaments and siege equipment. He deliberately sailed via a circuitous route in order to minimize the possibility of a battle with the British, should they sail from New York in pursuit. Washington and Rochambeau, in the meantime, had crossed the Hudson on 24 August, leaving some troops behind as a ruse to delay any potential move on the part of General Clinton to mobilize assistance for Cornwallis.
News of Barras' departure led the British to realize that the Chesapeake was the probable target of the French fleets. By 31 August, Graves had moved his five ships of the line out of New York Harbor to meet with Hood's force. Taking command of the combined fleet, now 19 ships, Graves sailed south, and arrived at the mouth of the Chesapeake on 5 September. His progress was slow; the poor condition of some of the West Indies ships (contrary to claims by Hood that his fleet was fit for a month of service) necessitated repairs en route. Graves was also concerned about some ships in his own fleet; Europe in particular had difficulty manoeuvring.Larrabee, p. 185
Battle lines form French and British patrol frigates each spotted the other's fleet around 9:30 am; both at first underestimated the size of the other fleet, leading each commander to believe the other fleet was de Barras' smaller fleet. When the true size of the fleets became apparent, Graves assumed that de Grasse and Barras had already joined forces, and prepared for battle; he directed his line toward the bay's mouth, assisted by winds from the north-northeast.Morrissey, p. 54Larrabee, pp. 186, 189
De Grasse had detached a few of his ships to blockade the York and James Rivers farther up the bay, and many of the ships at anchor were missing officers, men, and boats when the British fleet was sighted. He faced the difficult proposition of organizing a line of battle while sailing against an incoming tide, with winds and land features that would require him to do so on a tack opposite that of the British fleet.Larrabee, p. 189 At 11:30 am, 24 ships of the French fleet cut their anchor lines and began sailing out of the bay with the noon tide, leaving behind the shore contingents and ships' boats. Some ships were so seriously undermanned, missing as many as 200 men, that not all of their guns could be manned.Larrabee, p. 188 De Grasse had ordered the ships to form into a line as they exited the bay, in order of speed and without regard to its normal sailing order.Larrabee, p. 191 Admiral Louis Antoine de Bougainville's Auguste was one of the first ships out. With a squadron of three other ships Bougainville ended up well ahead of the rest of the French line; by 3:45 pm the gap was large enough that the British could have cut his squadron off from the rest of the French fleet.Larrabee, p. 192
By 1:00 pm, the two fleets were roughly facing each other, but sailing on opposite tacks. In order to engage, and to avoid some shoals (known as the Middle Ground) near the mouth of the bay, Graves around 2:00 pm ordered his whole fleet to wear, a manoeuvre that reversed his line of battle, but enabled it to line up with the French fleet as its ships exited the bay.Larrabee, p. 193 This placed the squadron of Hood, his most aggressive commander, at the rear of the line, and that of Rear-Admiral of the Red Francis Samuel Drake in the vanguard.Morrissey, p. 55Grainger, p. 70
At this point, both fleets were sailing generally east, away from the bay, with winds from the north-northeast. The two lines were approaching at an angle so that the leading ships of the vans of both lines were within range of each other, while the ships at the rear were too far apart to engage. The French had a firing advantage, since the wind conditions meant they could open their lower gun ports, while the British had to leave theirs closed to avoid water washing onto the lower decks. The French fleet, which was in a better state of repair than the British fleet, outnumbered the British in the number of ships and total guns, and had heavier guns capable of throwing more weight. In the British fleet, and , two ships of the West Indies squadron that were among the most heavily engaged, were in quite poor condition.Larrabee, p. 195 Graves at this point did not press the potential advantage of the separated French van; as the French centre and rear closed the distance with the British line, they also closed the distance with their own van. One British observer wrote, "To the astonishment of the whole fleet, the French center were permitted without molestation to bear down to support their van."Larrabee, p. 196