Safety Evaluation of the Pump Jet Propulsion Assembly for the Military Amphibious Reconnaissance System. U.S. Marine Corps 1992 report related to propeller safety.
Houseboat Propeller Regulation Proposed and Withdrawn by USCG: Analysis by PGIC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