A little waterway education...
'Ranges' are two sets of either lights or visual aids (boards) used to enable a captain to line up the ship in the middle of the channel. They are most often used when there are strong cross-currents. Even with today's sophisticated electronic navigation, the ranges provide real-time accuracy and often will show a ships' drift more quickly than GPS. The ICW has many ranges, particularly in Georgia and South Carolina where the waterway is subject to large tidal swings and fast currents.
Photo: Range showing our boat to be "on the range" in the middle of the channel.
Photo: Range showing our boat to be slightly left of course.
You may have to 'double-click' the photos to see them full size.
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