| Boat type | Neptunkryssare | 
| Boat name | Flax | 
| Sail number | SWE 140 | 
| Length over all (m) | 9 | 
| Lenth waterline (m) | 5,85 | 
| Width (m) | 1,92 | 
| Depth (m) | 1,2 | 
| Sail area (m2) | 19 | 
| Displacement (kg) | 1150 | 
| Designer | Lage Eklund | 
| Builder | Kalle Johansson | 
| Build location | Norrtälje | 
| Build year | 1949 | 
| AIS | Yes |