About NavRules

NavRules for Windows is a training program for learning the 72 COLREGS and the Inland Navigation Rules. Specifically, NavRules contains the complete set of light patterns, dayshapes, and sound signals that are listed in the United States Coast Guard Navigation Rules, International and Inland (COMDTINST M16672.2rDC). These lights, dayshapes, and sound signals form the foundation of an internationally recognized method of recognizing vessels and obstructions in various degrees of visibility. The complete set of these rules is also provided as an Adobe Acrobat (PDF) file for easy reference.

NavRules for Windows is a shareware program that will run on any version of Windows. You may use it on a trial basis for 30 days, after which you must register the program for a mere $20. The version of NavRules that is available here is fully functional, so what you see is what you get.

Want to see what NavRules for Windows looks like without downloading the entire program? Below are two sample screen shots.