Fender Guide Size

BoatBoat LengthFender Diameter
18 ft – 30 ft 18 ft – 30 ft 9"
30 ft – 45 ft 30 ft – 45 ft 10"
45 ft – 60 ft 45 ft – 60 ft 12"
60 ft – 100 ft 60 ft – 100 ft 18"
100ft – 200 ft 100 ft – 200 ft 24" – 36"
200 ft – 400 ft 200 ft – 400 ft 4', 6', or 8'