Ship Crew To be able to serve at sea, crew members must meet the medical fitness standards of their duties on board. Crew members’ medical fitness to serve at sea is ensured with a medical certificate issued by a medical examiner of seafarers. Medical examination for seaferer is very much required To reduce the risk that health related impairment in a seafarer will contribute to an accident at sea. To reduce the risks of harm to the seafarer themselves, or to others, from their illness. Medical examinations will not eliminate such risks but will help to reduce them based on a medical assessment that reviews: Whether the seafarer has a current impairment or medical condition that reduces their capability to perform their duties safelyand effectively. Whether the seafarer has or had a medical condition that is likely to recur or become more severe and that may lead to incapacitation or illness such that they would be unable to perform their duties safely and effectively or that may put their own health at risk, given the limitations to medical care at sea.