When both are running free, with the wind on different sides, the vessel which has the wind on the port side shall keep out of the way of the other.
When both are running free, with the wind on the same side, the vessel which is to the windward shall keep out of the way of the vessel which is to the leeward.
A vessel which has the wind aft shall keep out of the way of the other vessel.
Running Lights.
A sailing vessel, when running at night, carries a green light on her starboard side, and a red light on her port side. Such lights are generally carried in the rigging, about six feet above the rail.
A rowboat must carry a white light in a lantern to show when in danger of being run down.
A steam vessel carries the same lights as a sailing vessel, with the addition of a white light at the foremast head, or on launches on top of the pilot house.
A steam vessel, when towing another vessel, carries two white lights; if she is towing more than one vessel, tandem fashion, she shall carry three white lights.