Seaman's Reference is a job description that refers to a person who is responsible for providing information and guidance to sailors. The term can be broken down into two parts: HER (3 letters) and SHE (3 letters). HER stands for Harbor Engineer and Repairman, while SHE stands for Ship Handler and Engineer. The Harbor Engineer and Repairman is responsible for maintaining and repairing the harbor's infrastructure, while the Ship Handler and Engineer is responsible for operating and maintaining the ship's systems. Together, these two roles provide the necessary information and guidance to ensure the safe and efficient operation of the vessel.