Boatmen are individuals who navigate boats or vessels on waterways such as rivers, lakes, and oceans. There are several synonyms that can be used interchangeably with the word boatmen, including mariners, sailors, seamen, rivermen, and watermen. Mariners refer to individuals who are skilled in the art of navigating boats or ships at sea. Sailors and seamen are more commonly associated with crew members who operate commercial or military vessels at sea. Rivermen are individuals who navigate boats on rivers, while watermen are those who operate boats on any body of water, including lakes and oceans. Regardless of the synonym used, the work of boatmen requires specialized knowledge and skills related to water navigation and safety.