USCG 2010 recreational boating accident propeller fatalities as reported in U.S. Coast Guard’s BARD (Boating Accident Report Database).
Houseboat Propeller Regulation Proposed and Withdrawn by USCG: Analysis by PGIC
History of Boat Propeller Safety
Mitigating Boat Propeller Injuries & Fatalities Chart
Four Volume Review of the Boating Industry’s Boat Propeller Guard Product Liability Defense