U.S. Coast Guard Boating Safety Circular #77 dated August 9, 1995. USCG is seeking public comments on propeller safety on houseboats and other displacement vessels.
Houseboat Propeller Regulation Proposed and Withdrawn by USCG: Analysis by PGIC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