Originally Posted by
boatstall
Goes back to the origins of the word that we know as "starboard". Vessels dating back to the age of King Richard the 1st, utilized a rudder assembly, that was documented as always being mounted on the right side of the hull. Knights of the Teutonic Order, were known to have used the steering position on the right side. "Steer board" became "starboard", and has been the typical, but not exclusive location for steerage mechanisms.
Written early nautical history typically documents the left side of the vessels hard to the dock, as a method to prevent damage to the "steer board". This gave way to the reference of the left side of the vessel, being the side that was placed to the dock. Dock became the "port" side. Thus the origins of port and starboard.
Close quarters in tight waterways placed the protected "steer board" on the right side of the hull, away from damage from passing vessels, allowing the port sides of the vessels to pass without incident, other than scrapping by. This established the passing of an oncoming vessel port to port. Still use the same practices today.
Navigation rules written today typically originate from historical practices, not necessarily from logic. Apparently the choice of helm placement may be the same.
Some modern thoughts summarize that engine rotation creates prop torque, that is more easily controlled from the starboard side, which may be worthy of consideration. However, historical placement cannot be ignored.
Me, I don't know...:confused: