The International Regulations for Preventing Collisions at Sea (COLREG) demand that a proper lookout is kept at all times, and the right of way rule is followed.
The following factors can considerably reduce visibility, among other things:
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Gear trim angle
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Trim tab angle
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Load and load position
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Speed
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Rapid acceleration
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Changeover from displacement speed to planing
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Sea conditions
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Rain and thunderstorms
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Darkness and fog
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Inner lighting when under way in the dark
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Position of curtains
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People and equipment that block the driver's view.
Make only small adjustments at a time. Holding down the button for the trim tab for any length of time can result in partial loss of control of the boat.
Visibility from the seated position at this helm station is limited. Avoid serious injury or death from collisions. Operation from a standing position may be necessary to maintain lookout as required by rules of the road.