upon entering the water and ended up swimming down instead of towards the surface. Alcohol may also give you the feeling that you and your boat can perform maneuvers beyond both your limits. The ability to process information from various sources is also depressed by alcohol and the person may develop a tunnel vision perspective, thus blocking out critical information. One's ability to judge speed and distance are also impaired which also limits one's ability to track moving objects. Alcohol also reduces your night vision, you lose the ability to differentiate between red and green which makes the intoxicated boater an even greater hazard after dark. 42