What is the green light on the starboard side?
What is the green light on the starboard side? Sidelights: These red and green lights are called sidelights (also called combination lights) because they are visible to another vessel approaching from the side or head-on. The red light indicates a vessel's port (left) side; the green indicates a vessel's starboard (right) side.
What do three short blasts of a horn indicate?
One short blast tells other boaters, ?I intend to pass you on my port (left side)." Two short blasts tell other boaters, ?I intend to pass you on my starboard (right) side." Three short blasts tell other boaters, ?I am backing up."