It is unlawful to operate a motorboat:
- within 100 feet of any swimmer, diver, dock, raft, pier at a speed in excess of “no wake.”
- at a speed in excess of no wake from one-half hour after sunset to sunrise.
- while a passenger is sitting on the gunwales, tops, backs or sides of seats, or on the decking over the bow while under way, unless such person is inboard of guards or railings sufficient to prevent the person from being lost overboard.
- in a repeated circuitous course within 200 feet around any other boat or swimmer, or in a manner to create hazardous wakes.
- while under the influence of an intoxicant or a controlled substance, or to use water skis or similar devices. In Wisconsin, all motor boat operators are deemed to have given consent to a blood alcohol test.
It is unlawful to operate any boat:
- beyond the safe carrying capacity of passengers, or in a negligent or reckless manner so as to endanger anyone’s life or property
- within an area clearly marked by buoys as a restricted use area, except in the case of emergency.
- if there are any aquatic plants or zebra mussels attached.
It is illegal:
- to allow any person who is physically or mentally incapable of operating a boat under prevailing circumstances to operate your boat.
- to anchor an unattended boat or similar structure in any channel or traffic lane established and legally marked so as to interfere with the safe passage of any other boat.
- to unnecessarily use any sound-producing device on a boat, or to use a siren except on authorized patrol boats.
- to throw refuse into the water or upon public or private property.
- to operate contrary to any legally posted municipal boating ordinances.