The Graceful class was a type of frigate designed for medical duties, serving in Starfleet during the 24th century.
Unlike the Olympic cruisers, which are spacefaring hospitals, the Gracefuls medical facilities are mission-specific, such as humanitarian aid, combat triage, plagues, etc.
In theory, the vessels could stay on station without resupply for nineteen months, though it realistically depended on the ship's current mission.
Armed with type VIII phaser emitters and a pair forward-facing photon torpedo launchers and one aft, the frigate could fend off most attackers.
Three shuttlecraft and a pair of shuttlepods, along with an embedded search and rescue craft similar to a Captain's Yacht, made up its auxiliary craft complement.