The USS Clement (NCC-12537) was a Federation starship that was in service with Starfleet in the late 24th century.
In 2370 the USS Enterprise-D was supposed to meet with the Clement, but the rendezvous was delayed when the Enterprise was ordered to the Argaya system. (TNG: "Lower Decks")
In 2374, during the Dominion War, the starship reported Grace Kenney as a casualty to Starfleet Command. (DS9: "In the Pale Moonlight", okudagram)