Maximum Occupancy Sign. Signs are posted in bars and restaurants to limit the maximum number of people inside. Maximum occupancy is limited so people can safety evacuate the facility in an emergency such as a fire.
Houseboat Propeller Regulation Proposed and Withdrawn by USCG: Analysis by PGIC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