There are many jobs available on a cruise ship medical staff, as it is mandatory for all ships to employ doctors, nurses, and urgent care specialists. In a medical role aboard a ship, you may address a variety of passenger ailments, provide emergency first-aid to staff and passengers, and otherwise help to manage the health of everyone on the boat. Cruise ships often have a high percentage of seniors on board, so your job may involve dealing with senior-specific issues, including falls and occasionally deaths. Like most staff positions aboard a cruise ship, medical professionals may be asked to direct passengers and help issue orders during a ship-wide emergency.