The Scott Aerator Slinger DeIcer can be suspended from a boat, pilings or dock by using nylon ropes included to fasten This deicer removes and prevents ice by bringing warmer water from the bottom and sending it out in a continuous agitated movement It easily adjusts to compensate for varying water levels, and its heavyduty design holds up in fresh and salt waters Made for use in hardtoreach areas and rapidly changing conditions, its an economical solution to preventing ice formation in large marinas and dock areas 5 year motor waranty and 1 year warranty on other components