War of 1812
Single-ship actions

The more recently built frigates of the US Navy were intended to overmatch their opponents. The United States did not believe that it could build a large enough navy to contest with the Royal Navy in fleet actions. Therefore, where it could be done, individual ships were built to be tougher, larger, and carry more firepower than their equivalents in European navies. The newest three 44-gun ships were designed with a 24-pounder main battery. These frigates were intended to demolish the 36- to 38-gun (18-pounder) armed frigates that formed the majority of the world's navies, while being able to evade larger ships. Similarly the Wasp class ship-sloops were an over-match to the Cruizer class brigs being employed by the British. The Royal Navy, maintaining more than 600 ships in fleets and stations worldwide, was overstretched and undermanned; most British ships enforcing the blockade were (with a few notable exceptions) less practiced than the crews of the smaller US Navy. This meant that in single-ship actions the Royal Navy ships often found themselves against larger ships with larger crews, who were better drilled, as intended by the US planners.

However naval ships do not fight as individuals by the code of the duel, they are national instruments of war, and are used as such. The Royal Navy counted on its numbers, experience, and traditions to overcome the individually superior vessels. As the US Navy found itself mostly blockaded by the end of the war, the Royal Navy was correct. For all the fame that these actions received, they in no way affected the outcome of the results of Atlantic theatre of War. The final count of frigates lost was three on each side, with most of the US Navy blockaded in port. During the war, the United States Navy captured 165 British merchantmen (although privateers captured many more) while the Royal Navy captured 1,400 American merchantmen. More significantly, the British blockade of the Atlantic coast caused the majority of warships to be unable to put to sea and shut down both American imports and exports.

Notable single-ship engagements include USS Constitution vs HMS Guerriere on 19 August 1812, USS United States vs HMS Macedonian on 25 October, USS Constitution vs HMS Java on 29–30 December, HMS Shannon vs USS Chesapeake on 1 June 1813 (the bloodiest such action of the war), HMS Phoebe vs USS Essex on 28 March 1814, HMS Endymion vs USS President on 15 January 1815.

In single ship battles, superior force was the most significant factor. In response to the majority of the American ships being of greater force than the British ships of the same class, Britain constructed five 40-gun, 24-pounder heavy frigates and two "spar-decked" frigates (the 60-gun HMS Leander and HMS Newcastle) and others. To counter the American sloops of war, the British constructed the Cyrus -class ship-sloop of 22 guns. The British Admiralty also instituted a new policy that the three American heavy frigates should not be engaged except by a ship of the line or frigates in squadron strength.

The United States Navy's smaller ship-sloops had also won several victories over Royal Navy sloops-of-war, again of smaller armament. The American sloops Hornet, Wasp (1807), Peacock, Wasp (1813) and Frolic were all ship -rigged while the British Cruizer -class sloops that they encountered were brig-rigged, which gave the Americans a significant advantage. Ship rigged vessels are more manoeuvrable in battle because they have a wider variety of sails and thus being more resistant to damage. Ship-rigged vessels can back sail, literally backing up or heave to (stop).
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