Outboard Marine Corporation (OMC) and Mercury Marine testing of propeller guards at State University of New York (SUNY) at Buffalo in 1990 in their circular water tank facility now called CRESE.
Houseboat Propeller Regulation Proposed and Withdrawn by USCG: Analysis by PGIC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