In the relatively brief interval between the American Revolutionary War and the War of 1812, Britain had not fully accepted that America had become an independent nation rather than a British colony, and it seized American sailors in order to impress them (or draft them, as we would say in more modern language) into the British navy, which was always in need of more sailors.
1812
Because the French regarded the U.S.- British agreement over the Northwest Territory, a violation of French-American alliance.
the British blockade
Jay's Treaty where the British had to pay for ships seize by Frence
To prevent a British invasion from the North, and to win the Canadians to the American side.
In the relatively brief interval between the American Revolutionary War and the War of 1812, Britain had not fully accepted that America had become an independent nation rather than a British colony, and it seized American sailors in order to impress them (or draft them, as we would say in more modern language) into the British navy, which was always in need of more sailors.
American Ships
Yes, during the early 19th century, particularly around the time of the War of 1812, Great Britain seized numerous American ships. The British justified these actions by claiming the ships were engaging in trade with France, which was then at war with Britain. This practice of impressment and interference with American shipping contributed to rising tensions between the two nations, ultimately leading to the war.
The British Royal Navy were stopping American ships and taking sailors to be on the British crews.
clipper ships
privateers
Impressment :)