In production 1972 till 1983 Building numbers 31001 till 31252.
The German Contest ht bn 31178 named JAMBO completed a voyage around the world in the years between 1999 and 2004
| Length waterline (LWL) | 7.6 m |
| Beam | 3.15 m |
| Draft | 1.75 m |
| Keel | Short |
| Displacement | 4.77 t |
| Rig | Sloop |
| Hull shape | Round bilge |
| Material | GRP / Fibreglass |
In production 1972 till 1983 Building numbers 31001 till 31252.
The German Contest ht bn 31178 named JAMBO completed a voyage around the world in the years between 1999 and 2004