[bell-cot]

> I think the exaust has possitive pressure when the engine is running which would prevent water from entering.

Imagine a (say) 5cm diameter exhaust pipe, at a 45 degree angle - with exhaust gasses blowing out through the top 3cm, while water runs in through the bottom 2cm. At some point, the cold water starts hitting thicker and hotter pieces of metal. As you put it, "quite bad for the engine".

But from the article, about what happens when the Bayesian heels over too far: "water will start to enter the vessel (usually through engine room or accommodation ventilation ducts)… once this starts the vessels is in serious trouble".

[closewith]

All luxury sailing yachts to a rounding error have wet exhausts below the waterline.