Navigation lights & shapes – international colregs “i was so impressed with your nav lights app that i bought it and downloaded it immediately.” boaters know that collision avoidance is made possible as long as all boat operators know how to deal with situations appropriately. latest update.. The apple and android app navigation lights and shapes is useful for learning about required navigational lights (and identifying the boat lights you see at night). the colregs rules of the road app for both android and apple teaches the rules for preventing collisions.. Find your boat navigation light easily amongst the 351 products from the leading brands (eval marine, seld
