The Covid crisis has made the yachting sector collapse, and boats can be picked up for ridiculous prices (even more now with the cost of fuel skyrocketing - power boats are almost given away for free...), so my nephew got himself a nice 28-foot sailing yacht for EUR 1,000.
Inside is this 2000 Betamarine Beta Z482, a marinized Kubota 29.2 cid twin with 13.5 HP. Low hours and runs beautifully. It had been sitting for 10 (!) years, moored in a port on the English Channel, but even after so long, there was not a drop of oil leaking out. After a full service (new oil and fuel; all lines, belts and filters replaced;...) it started right up and ran perfectly, without smoke or hesitation.
This engine alone is worth at least twice what he paid for the boat!