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.
as the number of cases out of a certain population. For example, the prevalence of HIV/AIDS in. Australia in 2011 was 0.155%, or 115 out of every 100 000 people. 2 This is also known as âpointâ. prevalence as it provides a picture of what is occurring at a certain point of time.