The plastic barrel nuts on these ST-60 wind transducers fail at a rather alarming rate. Some of them just disappear right over the side of the boat. This owner was lucky and it landed on deck.
If this was the first one I'd seen FAIL I'd give Raymarine a pass but I have seen far to many of these FAIL for this to even be laughable. Heck the ST-60 wind on my own boat has failed just like this, but this was a customers ST-60...