Mercy-class of hospital ships are created from San Clemente-class supertankers used by the United States Navy. There are two ships of the class: USNS Mercy (T-AH-19) and USNS Comfort (T-AH-20). They are operated by Military Sealift Command and are designed to provide emergency, on-site care for American combatant forces, and also for use in support of disaster relief and humanitarian operations.
Recetly, reports appeared that the US is activating USNS Mercy (T-AH-19) in response to the coronavirus outbreak in the country.