When you right-click anywhere on a chart, a tool panel opens under the mouse. To pan the chart in any direction just press the arrow buttons. If you reach the border of a chart, the next chart opens automatically. Scale In/ Scale Out opens a larger/ smaller scale chart, while Zoom In/ Zoom Out changes the resolution of the chart. The red center button centers the chart on the boats position.

You don't have to use the tool panel. You can also move the chart in any direction just by dragging the mouse with the left button pressed.















This screen shot is from
TIKI Navigator Pro