Transducer is identified as an electronic sensing device in the bottom of the boat, usually in a through-Hull, that provides the data for a boat's depthsounder or speedometer.
Ref: 124235/2006-09-27
Other Database Pages Exist for this Phrase:
Underwater acoustic transducers (Underwater acoustic transducers can contain both ...)
Headphones (Headphone is described as an electromagnetic ...)