| HR 31 – Monsun Data | |
|---|---|
| Designer | Olle Enderlein |
| Years of construction | 1974 – 1982 |
| Build number | 904 |
| Hull length | 9.36 m / 30′ 9″ |
| Width | 2.87 m / 9′ 5″ |
| Draft (empty) | 1.40 m / 4′ 7″ |
| Weight (empty) | 4.200 kg / 9.250 lbs |
| Keel weight | 1.900 kg / 4.200 lbs |
| Sail area | 39 m² / 430 sq ft |
| Engine | Volvo Penta MD 11 C |
| kW / HP | 17 / 23 |
| Water tank | 160 liter / 43 US gallon |
| Diesel tank | 120 liter / 32 US gallon |
