(CNN) A cruise ship owned by the Church of Scientology that has a female crew member with a case of measles on board has departed from St. Lucia, according to marinetraffic.com.

The chief medical officer of St. Lucia said on Thursday that the ship would likely leave Port Castries where it was moored for its home port that night. The Church of Scientology says on its website the ship's home port is in Curaçao.

The Freewinds, with approximately 300 crew members and passengers, was been quarantined in a port in the Caribbean island's capital since officials discovered the person on board has the highly contagious disease, according to Chief Medical Officer Dr. Merlene Fredericks-James.

On Thursday, the ship's doctor requested 100 doses of the measles vaccine, according to a statement from the St. Lucia Department of Health and Wellness, "and this is currently being provided from our supplies, at no cost."

Crew members and passengers are being monitored by the ship's doctor, the statement said. "Continued surveillance is necessary as the incubation period for measles ranges from 10 to 12 days before symptoms in exposed persons occur," the statement added.

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