You are boating at night you see single white light directly ahead what should you do

Answer: Sailors while sailing at night uses certain colors of light to communicate.

According to the given condition, the white light appearing directly ahead of someone's direction, indicates that another boat (vessel) is sailing right ahead and communication must be done by blowing horn or by using the red light (left side/port side) or the green light (right side/starboard side). One must give way to avoid collision.