LIGHTrule is inexpensive security for night
travel and should be an essential part of the
equipment found on any boat. LIGHTrule is also
an excellent aide for navigation classes and
Coast Guard exams too. This simple to use vessel
identification tool shows the actual view of vessels
for Port, Starboard, Bow and Stern lights. LIGHTrule
identifies 60 light configurations and provides a
magnifying lens to make vessel descriptions easy to
read. It also displays audible signals for restricted
visibility, maneuvering and warning.