These high horsepower outboards are getting popular on boats traditionally powered by gas or diesel inboards or I/O's.
Here are a couple of photos of the Tilghman Island VFD's new bay built, powered by triple Yamaha 350's.
Wow. That's a lot of power for that boat. Maybe they needed some of that to power to run the pumps? Although I suspect they have an auxiliary pump motor under that center console?