Helm space is the most valuable real estate on board, and to get the most navigation gear for the space, choosing from these multifunction displays with integrated sonar is key. These touchscreen ...

All Seattle Engineer Wayne M. Ross planned to do was build a simplified sonar* device for finding sunken outboard motors, lost fishing gear and other salvage. When he thought he had solved the problem ...

Beneath the waves, submarines move like secret agents of the sea. Their job is to stay invisible, and to do that, they must dodge two clever trackers—radar in the air and sonar in the water. Radar is ...