PowerTech! Safety Prop image from Propeller Solutions. PowerTech Safety Prop won a Boat Writers International (BWI) IBEX 2012 Innovation Award.
Aspects of the Propeller Safety Debate chart
Houseboat Propeller Regulation Proposed and Withdrawn by USCG: Analysis by PGIC
History of Boat Propeller Safety
Mitigating Boat Propeller Injuries & Fatalities Chart