Sailor n. : One who follows the business of navigating ships or other vessels; one who understands the practical management of ships; one of the crew of a vessel; a mariner; a common seaman.

Example:
What is the difference between Sailor Moon S and Sailor Moon R?

Taxonomy
mariners, vessels, Sailor, Merchant Mariners, unlicensed, merchant seamen, Professional mariners, Team 3, Deck department, Merchant Navy, Steward's department, Engineering department, seafarers, chief steward, shore leave, World War II, workers, jobs.

Defination from the web:
sailor or mariner is a person who navigates water-borne vessels or assists in their operation, maintenance, or service. The term can apply to professional mariners, military personnel, and recreational sailors as well as a plethora of other uses. ...