There were two transducers under the front berth accessible by a small door. One was a paddlewheer type, the other was flat. The paddlewheel was installed in late 2018, the other solid one (no plug) was older and had its wire cut. It seems odd to me either of these could have failed, but who knows really.I'd be interested in knowing what thru-hulls were located in the forward section of the boat, if they were plastic or had plastic fittings attached and what equipment or stores were in the same area that may have been moving about in a wild seaway risking thru-hull damage. Same question regarding the knotmeter thru-hulls.