I have an RNLI Arun Class boat. Older technology but similar.
Vision from inside isn't good. It's easier to operate from up top.
The capsize units are mounted down near the bottom of the bilge.
If the boat rolls over the engines shut down and radar stops rotating.
As soon as it is upright there are capsize cancel switches in front of the throttles that restart everything.
The engine breather tubes run from each engine over the roof of the engine room to the opposite side engine.
The air intakes run down to the bilge so that if the boat is upside down they are then above the waterline.
The newer Severn Class boats have had the CAT 3412TA engines replaced with MTU 10V2000 that will run inverted for the 7 seconds it takes to roll upright.
This RNLI photo is of the boat in seas to 60'.
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