1) Boat puller 2) Cable on a car 3) Canal boat attachment 4) Dinghy attachment, often 5) Equipment on a tugboat 6) Haul line 7) Hawser 8) Line 9) Line of tugboats 10) Line on a tugboat 11) Nautical line 12) Towing line 13) Towing rope 14) Towline 15) Tugboat attachment 16) Water-skier need 17) Water-skiing accessory Found on https://www.crosswordclues.com/clue/towrope