I think the question was transom height. With a low transom, heavy seas, trolling with the waves, a low transom boat could swamped. It’s happened on Erie and all four people were lost. Granted it was in March and all died of hypothermia.
I’m going through the same problem too, bad black box on a Italian made Vitrifrigo brand refrigerator. The price on a replacement refrigerator is crazy!! I tracked down the part I needed on eBay for $250, going to install it this weekend, hope all goes well?!?! Good luck with your search.
All of mine work, the fifth one I bought what’s going to be for parts in case one of my four needed any parts. Two of them were brand new from a friend of mine that never mounted them on his boat. I just don’t use them much anymore.