The term 'BOAT'S RIGHT SIDE' can be answered with the word 'STARBOARD', which is a nautical term used to refer to the right side of a boat when facing the bow. This term is used to differentiate between the left and right sides of a boat, as the left side is referred to as 'PORT'. The use of these terms dates back to the days of sailing ships, when the STARBOARD side was the side of the ship that was closest to the stars, allowing navigators to better orient themselves.