Another best type of fish finder that is perfect for performing a combination of basic functionalities and that too comes with a Chartplotter. It has the relevant GPS sensors which can be efficiently used to locate the exact positions of fishes under the water body. A perfect choice for midsized boat owners, this type of fish finder allows the fisherman to navigate to the exact location in order to catch a whole lot of fishes. The data is displayed on the digital screen and the fisherman can easily get to the right location. They also comes with relevant sound modules called as transducers which sends out strong sound waves. These sound signals then return back to the fisherman on the digital display and shows the exact location of fishes. They produce sound waves that even travel to far off places also and helps to locate distant objects as well.