| Date first constructed | 1939 |
| Country Of Manufacture | Great Britain |
| Record Speed | 141.7 M.P.H. |
| Length (Overall) | 27 Ft 2 inches |
| Beam (Over Sponsons) | 10 Ft. 10 inches |
| Displacement (In Record-Breaking Trim) | 5, 065 lb |
| B.H.P. | 1950 * |
| Revolutions | 3,150 |
| Propeller | Pitch 20.5 inches Diameter 14 inches Two Blades |
| Gear Ratio:Engine/Propeller | 2.85:1 |
| Fuel | 25 gallons |
+ These figures relate to Bluebird K4 as ran at the time of breaking the World’s Water Speed Record in 1939.
* Based upon estimates made by Rolls-Royce - the ‘Ram Effect’ here is somewhat difficult to estimate.