Is it called piloting a ship?
The common term is “piloting”. Per Google definition: pilot (gerund or present participle: piloting): act as a pilot of (an aircraft or ship).
Why is it called a pilot boat?
A pilot boat is a type of boat used to transport maritime pilots between land and the inbound or outbound ships that they are piloting. Pilot boats were once sailing boats that had to be fast because the first pilot to reach the incoming ship got the business.
Is a boat captain called a pilot?
Both a pilot and captain operate a shipping vessel. The former works primarily within a harbor or port, tasked with guiding the boat through a hazardous stretch. The latter maintains control of it on open waters.