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• Used worldwide by practical and shore based RYA instructors for accurate Navigation course plotting.
• It has bright blue directional arrow prevents accidental reciprocal bearings.
• Edges are graduated for tide and boat speed calculation.
• Base has a fixed grid so it is easy to plot latitude from your GPS system.
• Comprehensive instructions included.
• Ideal for plotting the course on small boats with small navigation tables
• As used by the RYA.

Checkout this instructional video on YouTube on