Short answers, pulled from the story.
Inconstant carried Napoleon Bonaparte and his generals between Elba and Golfe Juan on the French coast. This voyage took place between the 26th of February and the 1st of March 1815. She had been enrolled in Napoleon's small Elban navy since the 28th of May 1814, mainly to keep his communications open with Livorno.
Inconstant was launched in 1811 as one of 32 sister brigs built for the French Navy. Jacques-Noël Sané drew her design, and Jean-Baptiste Marestier supervised her construction after the Navy took over the project from a contractor named St André.
Lieutenant François-Louis Taillade commanded Inconstant for most of her time in Napoleon's service. Napoleon briefly replaced him with a man named Jean François Chautard after storms damaged the ship in January 1815. Taillade returned to a shared command in time for Napoleon's departure.
After the Hundred Days, Inconstant returned to French naval service and joined the 1823 expedition to Spain. She recaptured the merchantman Nativité on the 26th of June that year. She later served on the Brazil station from the 10th of December 1823 to the 6th of March 1826. She served again in French Guiana from 1838 to 1840.
Inconstant was condemned on the 17th of August 1842. She was broken up in dry dock number 6 at Brest, in work that began on the 4th of December 1843.
Before Napoleon's exile, Inconstant served on routine postings between French and Italian ports, including stops at Livorno, Porto Ercole, and Portoferraio between 1811 and 1814. She left Toulon on the 24th of April 1814, intending to carry Napoleon from St Tropez to Elba. At his own insistence, a frigate carried him instead.