Whale Ship Collisions Chart from “Hydrodynamics of Ship/Whale Collisions” by Silber, Slutsky, and Betteridge. Published in Journal of Experimental Marine Biology and Ecology. Vol 391. (2010). Pages 10-19.
Houseboat Propeller Regulation Proposed and Withdrawn by USCG: Analysis by PGIC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