The Military Sealift Command hospital ship USNS Comfort (T-AH 20) arrived in Puerto Rico on Tuesday to assist in hurricane relief efforts.

Comfort is assisting the Federal Emergency Management System (FEMA), the lead federal agency, in helping those affected by Hurricane Maria.

The Mercy-class hospital ship is a seagoing medical treatment facility that currently has more than 800 personnel embarked for the Puerto Rico mission including Navy medical and support staff assembled from 22 commands, as well as over 70 civil service mariners.

The ship has one of the largest trauma facilities in the United States and is equipped with four X-ray machines, one CAT scan unit, a dental suite, an optometry lens laboratory, physical therapy center, pharmacy, angiography suite and two oxygen-producing plants.