The Lowrance Hook 5 Ice Machine is a sonar-based electronic fish finder with a high-resolution five-inch LCD. It has been optimized for fish detection through and under ice, although it is entirely capable of detecting fish year round. It has a built-in GPS system that contains data for over 3,000 lakes and rivers, as well as coastal contours out to 1000 feet. Additionally, the Insight Genesis software system within the device enables the operator to create their map, in the event the onboard map is out of date, not present, or the operator’s sonar determines a discrepancy in the data.