HMS Aetna was one of the Royal Navy bomb vessels that were involved in the attack on what historical American coastal pentagonal bastion fort, that was first built in 1798?
HMS Aetna (1803): HMS "Aetna" was one of the Royal Navy bomb vessels involved in the attack on Fort McHenry in the Battle of Baltimore and the bombardment of Fort Washington, Maryland in 1814, during the War of 1812. Fort McHenry: Fort McHenry, in Baltimore, Maryland, is a historical American coastal pentagonal bastion fort best known for its role in the War of 1812, when it successfully defended Baltimore Harbor from an attack by the British navy from the Chesapeake Bay September 13–14, 1814. Fort McHenry:  It was first built in 1798 and was used continuously by U.S. armed forces through World War I and by the Coast Guard in World War II.
Fort McHenry