TYPE APPROVAL| Duke | 3000 W | DC | 18 – 27 m | 60 – 89 ft |
| Duke | 3500 W | DC | 22 – 29 m | 75 – 95 ft |
| Duke | 4000 W | AC | 18 – 29 m | 60 – 95 ft |
| Duke | 5500 W | AC | 22 – 32 m | 75 – 105 ft |
| Duke | Hydro | 20 – 32 m | 60 – 105 ft |
The indication may vary according to the boat type and the anchor-rode type
