New information:
5) the dive operator was one of our Japanese-run shops catering to Japanese tourists
6) the Japanese instructor has said that the student inflated her BCD and shot to the surface, colliding with the boat
More questions: Were the props still spinning in neutral, or in drive? Either or with divers in the vicinity I would have the engine off.
Additionally, I find propeller related injuries just gruesome. For the most part avoidable on the part of the boat operator with simple operating protocols like having the engine off, and being exceptionally conservative.
I say this because I've had my experience with boat props.
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