My Eagle Sea Charter 320DF indicates that I'm at 0.0 ft depth and flashes on the display. I encountered a pretty bumpy ride last week in the Straits of Juan De Fuca on the way from PT to the islands just south of Cattle Point on a rip tide and some good wind. Got into some heavy whitewater and had some waves crash over the top but we managed to power through it and stayed in Friday Harbor. The transducer looks good and I cleaned it. But it just isn't getting any signal. Its within the 1 year warranty period. I'm looking for some good advice.