Outbound merchant ships, officers and apprentices were exempt from impressment.
From the en.wikipedia.org
The Royal Navy also used impressment extensively in British North America from 1775 to 1815.
From the en.wikipedia.org
After the second fall of Napoleon, impressment was largely abandoned.
From the en.wikipedia.org
The impressment policy of quartermasters ran the rails ragged.
From the en.wikipedia.org
This included impressment and seizures of American men and goods.
From the en.wikipedia.org
The various Aubrey and Maturin books of Patrick O'Brian also deal with impressment on occasion.
From the en.wikipedia.org
Naval impressment was an insult to American citizenship.
From the post-gazette.com
People liable to impressment were eligible men of seafaring habits between the ages of 18 and 45 years.
From the en.wikipedia.org
Impressment humiliated and dishonored the U.S. because it was unable to protect its ships and sailors.
From the en.wikipedia.org
More examples
Impress: the act of coercing someone into government service
Impressment, colloquially, "the Press", was the act of compelling men to serve in a navy by force and without notice. ...
The act of seizing people or property for public service or use
Applied to seaman, sea-faring men, and persons whose occupations were to work in vessels and boats upon rivers. Landsmen were impressed, but usuallly released. The majority of sailors, however, volunteered.
The British navy used press gangs to commandeer manpower for naval service. During the Napoleonic Wars British captains impressed seamen from neutral vessels, even naturalized American citizens. America's sense of national honor was outraged and impressment became a cause of war in 1812.
The British practice of seizing seamen from American merchant ships and forcing them to serve in the British navy. Impressment was one of the causes of the War of 1812.
Kidnapping people into the services; as in the navy