Crossing The River With Dogs 2nd Edition Pdf
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The idea of the river crosser takes advantage of the wind and the current in the water. To cross the river, the motorboat is positioned as shown in the diagram below. As the boat is moving across the river, the flow of the river tends to push the boat across the river, thus, changing its direction of movement. The current creates a force, causing the boat to yaw in its downstream direction. The current is not uniform throughout the river. During high winds, eddies, sinuous sections of water, and other features of the river can alter the flow of water. The area of the river most difficult to cross is inside the eddy or current. A method, commonly known as the "baseball method," is used to plot the location of areas inside and outside of eddies. Once the direction of the current and the wind is known, it is a simple matter to determine the location of the eddy center (where the water is calm and moving slowly). Then, a large circle is drawn around the eddy. The area outside of the circle is classified as an unriverized area. The area inside the circle is classified as an eddy area. The objective of the river crossing is to change the direction of the motorboat so that its motion will be upstream rather than downstream. To accomplish the change, the boat is rotated about its centerline so that the side facing into the direction of the current is turned towards the opposite shore. If the boat were rotated so that its side facing into the current was turned towards the opposite shore, the boat would be entering the eddy. In the diagram below, the boat is turned toward the right by starting it in the circle toward the left. When entering the eddy, the boat will lag behind the surrounding water and will often have trouble staying in the eddy until the outside of the eddy catches up to it. d2c66b5586