A recent cruise ship case involves a man who had a severe asthma attack at a wedding. There was oxygen aboard but the crew would not allow passengers with medical training to assist.
By the time the vessel got back to the dock, the passenger was in a very bad way and later died. A magistrate denied limitation of liability because the captain could have diverted to a closer dock. The court noted that while an aboard doctor was not required on a party boat, there is a duty for reasonable care to afford reasonable assistance that an ordinarily prudent person would render under similar circumstances. Gateway Clipper, Inc. v. Hill.