Coronavirus test kits were delivered at sea on Thursday to an ocean liner.<br />The ship is barred from returning to port in San Francisco, according to Reuters.<br />This is after at least 35 people developed flu-like symptoms aboard the vessel.<br />The symptoms have been linked to two other confirmed cases of COVID-19.<br />The diagnostic sampling kits were flown by helicopter to the cruise ship Grand Princess.<br />California Governor Gavin Newsom the ship will be kept offshore until testing is complete.