From the July 23, 2017, Washington Post.
The USS Constitution has been out of the water for repairs for more than two years. It undocked Sunday night at 11:45 p.m. before a large crowd of onlookers.
It is taken out of the water every twenty years for maintenance in a drydock to its below the waterline area.
Bob Gerosa, USMC, serves as the ship's 74th commander. It is the last of six super frigates ordered by George Washington.
The ship was originally expected to last just 10-20 years, but here it is 220 years later.
It entered the drydock on May 18, 2015.