Weems & Plath Light Rule Night Travel Navigation Tool

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 vessel is a fishing trawler or super tanker, then LIGHTRule™ is for you. This simple-to-use vessel identification tool 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. Click on the Documents tab on the left to see a high resolution view of the LIGHTRule™.

• Identifies all COLREGS
• Displays 60 light configurations
• Displays 15 day shapes
• Actual view of vessel for port, starboard, bow & stern lights
• Visual guide for horn signals
• Magnifying lens for clear readability of definitions
• Durable plastic construction
• Lifetime warranty

• Provides a magnifying lens to make vessel descriptions easy to read
• Displays horn signals for restricted visibility, maneuvering and warning
• Constructed of extremely durable plastic
• Stored in a vinyl sleeve