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.
The prevalence of the infection was significantly higher in Ohaukwu than Onicha (47.9%,95% CI., 42.9-52.9% versus 11.0%, 95% CI., 8.3-13.7%) (Ï2 =148.6, df =1, P < 0.05). Individuals aged 5-10years old were more likely to be infected and the intensity of the infection was higher among the males.