USCG Recreational Boating Statistics 2009 Table 17. Indicates Event 1, Event 2, Event 3, and Total Event propeller accidents. Table is a version of the format PGIC and SPIN suggested.
Houseboat Propeller Regulation Proposed and Withdrawn by USCG: Analysis by PGIC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