This reminds me of a incident my friend had years ago. He worked for a company that would remove weeds from lakes around docks, etc. They used a flat boat that had a paddle wheel type thing that would cut the weeds and lift them out of the water and place them on the deck of the boat. It was powered by a 4 cylinder motor. They over loaded the boat with weeds, on one side, and it slowly rolled over. The air intake hit the water and went under with the motor running at full speed. The motor blew up like a handgrenade. Everything broke into pieces, block, crank, head. He said it was pure luck no one got hit with the pieces.