USCG 2009 recreational boating propeller accident fatalities as reported in the U.S. Coast Guard’s BARD (Boating Accident Report Database).
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Houseboat Propeller Regulation Proposed and Withdrawn by USCG: Analysis by PGIC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