is a person who navigates waterborne vessels or assists as a crewmember in their operation and maintenance. The term bluejacket may be used for British or US Navy enlisted sailors, the latter especially when deployed ashore as infantry.[1] The Bluejacket's Manual is the basic handbook for United States Navy personnel. 700,000 of the world's mariners come from the Philippines, being the world's largest origin of seafarers.[2]