There's many things on the side of a boat. If it's a thing that wraps all the way around then it's a bumper. If your talking about what the side is called, I believe it's the gunwale. If you're talking about the picture or design, that's the graphic. But if you're talking about the thing that stops the boat from getting scratched up by the dock, that's the fender(s).
On a boat, the right side is the starbord side; the left side is called port.
If a person is in front of a boat right side is starboard, left side is port, front of a boat is called Bow and back is called Stern.
Back of a boat is called Stern ,Front of a boat is called Bow,When a person is in front of a bow,left side is port or right side is starboard.
If a person is in front of a bow( Front side of a boat) right side is starboard.
If a person is in front of a bow( Front side of a boat) right side is starboard.
a 2 hull boat
It is called listing when a boat leans. If the boat leans to port (left) then it is listing to port.
scull
Front of a boat is called Bow, Back is called Stern ,When a person is in front of a bow, right side is starboard and left side is port.
The stern is the back or rear of a boat. The bow is the front.
The gunnel.
Starboard on any boat or ship is the righthand side, port is the lefthand side. Port use to be called larboard.