Tp-20 a boater would use a tide table for what type of information?

A boater used tide tables or the following information:

The information about the water, whether it is enough to navigate in is given by tide tables, and also tells you about the tides either it is low or high.

For example at low if there is only three feet water and you boat requires five feet water to function, then the boater will wait until the tides come in.