Passengers boarding commercial ferries are strictly prohibited from bringing hazardous materials, highly flammable substances, compressed gas cylinders, industrial chemicals, pyrotechnics, explosives, and illegal narcotics. Additionally, dangerous items such as unshielded firearms, sharp edged weapons, and large unsafely packed items that could block emergency evacuation routes are banned. Operators also enforce strict limits on oversized baggage, noxious or foul-smelling goods, and live animals unless they meet specific pet transport guidelines.