If you have ever been on the water at night and wondered if the marine navigation lights you see are from an approaching or fleeing vessel, or if the lights are just a simple fishing trawler or huge super tanker, then LIGHTrule is for you. This simple to use vessel identification tool shows the actual view of vessels for Port, Starboard, Bow and Stern lights. LIGHTrule identifies all the USCG COLREGS, 60 light configurations, and provides a magnifying lens to make vessel descriptions easy to read. Displays audible signals for restricted visibility, maneuvering and warning.
LIGHTrule makes an excellent aide for navigation classes and Coast Guard exams as well. It's constructed of durable plastic and stored in a vinyl sleeve. Size: 16 in. x 5 1/4 in.. LIGHTrule is an inexpensive, yet valuable reference tool for all night travel and is an essential addition to the equipment found aboard any boat.