This video shows how to create parallel index lines and set it to radar. It shows how to determine the PI lines including the Not More Than (NLT) and Not Less Than (NMT) PI lines when making a passage plan. Parallel indexing is a navigation technique used by mariners to maintain a safe distance from a navigational hazard or to ensure that the vessel stays on a desired track. This method involves using radar and electronic navigational charts, or paper charts to create reference lines, known as index lines," parallel to the ship's course, to continuously monitor a vessel’s track, to a pre-determined passage plan.#PI #Radar #Navigation #Ecdis

Parallel Indexing and Blind Navigation. Format:pdf Language:eng #PI #BlindNavigation