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.
From Wikipedia: Incidence (epidemiology) is the risk of developing some new condition within a specified period of time. Prevalence. in epidemiology, is the proportion of a population found to have a condition (typically a disease or a risk factor such as smoking or seat-belt use). Written Jan 29, 2014 â¢ View Upvotes â¢ Answer requested by Quora User.