SANTA BARBARA, Calif. -

A cruise ship with dozens of sick passengers has made its final stop in Santa Barbara.
The Crown Princess arrived in the harbor about 7am Wednesday morning traveling from San Francisco.

More than 50 people on board are sick possibly with Norovirus. The Santa Barbara County Health Director was on board as of 8am to determine if it's safe for the passengers to leave the ship. Dr. Takashi Wada gave the green light for passengers to get off. However, those who are sick remain on board.

Princess Cruise's spokeswoman Karen Candy said Tuesday that cruise officials believe the cause of the illness is the norovirus.

That family of viruses is spread person-to-person and causes flu-like symptoms including nausea, vomiting, diarrhea and stomach cramping.

Candy says the ship's staff began intense disinfecting of surfaces, and all sick passengers are being encouraged to remain in their rooms.

The Crown Princess is on a seven-day California cruise that began in Los Angeles on Saturday and ends in Santa Barbara.