In 2000, as part of the Royal Navy's Atlantic Patrol Task North, "Cardiff" spent six months in the Caribbean with RFA "Black Rover". They provided relief aid to the island of Caye Caulker, near Belize, in the wake of Hurricane Keith. In addition to clearing routes, distributing supplies, and making buildings and electrical cables safe, "Cardiff"s surgeon and medical team monitored sanitation. In October, they also took part in the NATO exercise "Unified Spirit", held off the east coast of the United States. "Unified Spirit" is a training exercise conducted every four years in NATO-led "out-of-area" UN peace support operations. In the same year she participated in the US Navy Fleet Battle Exercise after her combat system was integrated into the Digital Fires Network.