# Crossing River using pointing method!

Suppose you are anchored near the shore of a channel of width $b$ in which there is steady current, and you run your (motor) boat at constant throttle to a dock directly across the channel on the opposite shore. You steer the boat in such a way that the nose of the boat is always pointed directly at the dock. The velocity of the boat with respect to the water is $v$ and the velocity of water is $u$.

Find the time it takes you to reach the dock.

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