Toms Tips About Pinpointing Arrival Times
By Tom Neale, 11/25/2009
1. A chart plotter can give you accurate “time to go” only as the crow flies on a calm day. However, people frequently use chart plotters to figure the speed they need to make in order to reach bridges for their scheduled openings. I’ve even seen guide books suggest this. This is usually a mistake. Normally, a “time to go” figure on your GPS should only be considered to be a very rough estimate.
2. In the real world of boating, the ICW and rivers and channels seldom run in a straight line.
3. Also, the currents can and often do change as you cross creek mouths or inlets. This will normally increase or diminish your speed.
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