IPA: //ˈstɪrz.mən//
KK: /ˈstɪrzˌmæn/
A person who is responsible for steering a ship or boat, guiding its direction while navigating through water.
The steersman skillfully guided the boat through the narrow channel.
Steersman → It is formed from "steer" (from Old English *styran*, meaning to guide or direct) and "man" (meaning a person). A steersman is a person who guides or directs a vessel.
Think of someone who 'guides' ('steer') a boat — that's why a steersman is the person directing the vessel.