Princess Cruises' Grand Princess is staying off the coast of San Francisco after 21 passengers tested positive for coronavirus.

The Carnival Corp-owned brand confirmed Friday that 19 crewmembers and two guests had the virus following a first-phase health screening of 45 passengers aboard the vessel.

Carnival said it has tentative plans for the 107,500-gt, 1998-built ship to come ashore and disembark passengers Monday in Oakland, California, at a time to be determined.