WNT i feel the torqueedo plastic propeller with an RPM of 1200-1400 would likely slap away a limb not sever it iff the safety lockouts fail
I actually prototyped this with a drill and 10 inch and 12 inch mock up and 1200 rpm is not as scary as a metal sharp 4000 rpm prop…
There is a guy in england who puts a bead on the leading edge and literally shoves his whole hand in at full RPM nuts but it works