Port
If you aboard the ship and you face toward the front of the ship, the port side is the left side of the ship. So, the port side of a ship would show the port light.
In very old sailing vessels, the ship didn't have a rudder built into the ship; instead, a long oar-shaped "Steering board" was mounted near the stern of the ship, and generally on the right side. This steering board could be damaged if it banged into the dock, and so generally the ship came to the pier with the left side of the ship. We now call the left side the "port" side of the ship, and the right side is the "steering board" or "starboard" side.
The left side of a ship or plane.
The left side is the port side.
...Is "aport": On a ship, while facing forward, the left side of the ship is called "port" and the right side of the ship is called "starboard".
elizabeth 11 on one side &sailing boat on other 1955
In the oldest of sailing days the left side of the ship was called the "larboard" side. The right side was "steorbord" which is now "Starboard", it said that the name came literally from the side of the ship was steered from. larboard was too easily confused in high winds or loud sounds with starboard, so it was changed to "port side" which was the side of the ship cargo was loaded on from the docks.
It is called a "ship", a ship has both left and right sides.
If you actually mean, what is the left hand side of the ship called... It is the port side. It has mostly the same things as the right side of the ship (called the starboard).
If you actually mean, what is the left hand side of the ship called... It is the port side. It has mostly the same things as the right side of the ship (called the starboard).
Port side
port