MMGAS created the US ATONS CARDS App in an effort to offer the marine navigator a simple easy to use set of quick reference cards for marine navigation in US waters. As part of the information package the International Flag Code System is also included.

Lateral System, Non-Lateral System, Dayboards, Isolated Danger, Range Dayboards, Regulatory Marks, The Intercoastal Waterway [ICW], Special Buoys, Distress Signals, Operating “Rules of the Road”, The Cardinal Buoys and the International Flag Code System are all here in one convenient location for quick reference when boating on US waters.


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