Lloyd's unlimited rating
Lloyd's unlimited rating is a rating applied to hydroplanes competing for the water speed record, as applied by Lloyd's Register. It is usually denoted by a circular white badge on the hull, with an infinity symbol "∞" above the K and number for Lloyd's "unlimited" group.
The group has included:
| Boat | Driver | ||
| K1 | Miss England III | Henry Segrave Kaye Don | |
| K2 | Miss Britain III | Hubert Scott-Paine Hubert Scott-Paine | |
| K3 | Blue Bird K3 | Malcolm Campbell | |
| K4 | Blue Bird K4 renamed Bluebird K4 | Malcolm Campbell Donald Campbell | |
| K5 | White Hawk | Frank Hanning-Lee | |
| K6 | Crusader | John Cobb | |
| K7 | Bluebird K7 | Donald Campbell | |
| K8 | British Pursuit | Tony Fahey |