Whale model used in ship whale hydrodynamic interactions study in “Hydrodynamics of Ship/Whale Collision”. Journal of Experimental Marine Biology and Ecology. Vol.391 (2010). Pages 10-19.
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Houseboat Propeller Regulation Proposed and Withdrawn by USCG: Analysis by PGIC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