U.S. Coast Guard National Boating Safety Advisory Council (NBSAC) 100th annual meeting minutes excerpts on Ryan’s Law preemption. October 2018.
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Houseboat Propeller Regulation Proposed and Withdrawn by USCG: Analysis by PGIC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