A sea captain, ship's captain, captain, master, or shipmaster, is a high-grade licensed mariner in ultimate command of the merchant vessel. The captain is responsible for its safe and efficient operation, including: ship's seaworthiness, ship's safety and security conditions, cargo operations, navigation, crew management and ensuring that the vessel complies with local and international laws, as well as company and flag state policies. All persons on board, particularly during navigation, includ
1 âPrevalenceâ is the proportion of a population who have (or had) a specific characteristic in a given time period â in medicine, typically an illness, a condition, or a risk factor such as depression or smoking.
INFORMATION POINT: Prevalence and. incidence. Prevalence is a frequently used epidemiological measure of how commonly a. disease or condition occurs in a population. Prevalence measures how much of. some disease or condition there is in a population at a particular point in time. The prevalence is calculated by dividing the number of persons with the disease. or condition at a particular time point by the number of individuals examined.