On 19 July, Royal George, Earl of Moira, Prince Regent and Duke of Gloucester and a fifth unnamed ship, appeared off Sackett's Harbor, New York intent on battling with Oneida.

The wind faltered during the British fleet's approach, allowing time for the carronades aboard Oneida to be carried ashore and mounted in the fortifications.

[7] For the rest of the summer and autumn of 1812, Royal George would primarily be used as a transport service for men and ammunition for the British Army.

[8] On 1 October, Earl in Royal George anchored off the Genesee River and sent an armed party ashore to Charlotte, New York.

On 9 November 1812, an American fleet of seven vessels under the command of Commodore Isaac Chauncey surprised Royal George as the sloop passed near the Bay of Quinte on Lake Ontario.

Royal George eluded the American vessels by slipping into the North Channel between Amherst Island and the mainland as night fell, making her way into the safety of her home harbour at Kingston by 02:00.

[10] The following morning, 10 November, the American fleet resumed the pursuit, burning a small commercial vessel near Bath and proceeding along the shore.

Chauncey directed his vessel, Oneida and the rest of the American squadron to bombard and attempt to seize Royal George within Kingston's harbour.

Round shot from the American vessels penetrated into the town but they were unable to capture Royal George, which had retreated further into the harbour around 16:00.

[11] This would be the only American attack on Kingston during the War of 1812 as more personnel were sent to this important military and naval centre and strong fortifications were built on Point Henry to defend the dockyards.

"[13] In November Chauncey ordered the blockade of Kingston by gunboats which prevented Royal George and the rest of the British squadron from resupplying garrisons on the Niagara Peninsula.

[15] Barclay's posting was temporary as Captain Sir James Lucas Yeo had been named to take command of the naval forces on the Great Lakes, and given the flag rank of commodore.

Though Royal George did not directly participate in the following battle, the British managed to succeed in half of their objectives, destroying the American shipyard.

On 3 June, the squadron departed Kingston to resupply General John Vincent's forces in the Burlington Heights area.

After anchoring overnight at York, Upper Canada, Yeo's force spotted a large American encampment near Forty Mile Creek.

Confronted by Vincent's advancing force and Yeo's bombarding ships, the Americans withdrew quickly to Fort George.

The squadron remained off Forty Mile Creek until 11 June and then set sail along the southern shore of Lake Ontario, trading fire with the fortifications at Fort Oswego and raiding Sodus.

Sailing southwest, the firing began at 07:30, but Chauncey turned east to keep his squadron under the protection of American shore batteries.

Royal George and Lord Melville were the two British ships closest to the American battle line and suffered torn sails and rigging.

Once repairs were complete, the squadron sailed to confer with the British land forces commander, Major General Francis de Rottenburg at Four Mile Creek before returning to Kingston on 7 October.

[20] On 28 September, William Mulcaster was promoted to post captain and was awarded command of HMS Princess Charlotte, under construction at Kingston.

Upon the arrival of St Lawrence on Lake Ontario, the American squadron retired to Sackett's Harbor and did not venture forth again for the remainder of the war.

Niagara departed Kingston on 28 November carrying twenty of Princess Charlotte's 24-pounder (11 kg) long guns to be used on ships constructed in the new base.

[4] From 30 June to 1 July 2012, a 3-day reenactment of the flight of Royal George was performed from Bath, Ontario to Kingston in recognition of the Bicentennial of the War of 1812.