- Length overall (LOA)
- 6.06 m
- Hull length (deck length)
- 6.055 m (class measurement)
- Waterline length
- Approximately 5.9–6.0 m (varies slightly with trim)
- Beam
- 1.78 m
- Draught (centreboard down)
- Not fixed – centreboard / centreplate arrangement; effective draught varies with board position
- Displacement / hull weight
- Hull minimum weight 130.0 kg; fully rigged around 165 kg (typical)
- Ballast
- Not applicable (dagger/centreboard dinghy)
- Keel / foil type
- Retractable centreboard (centreplate) and pivoting rudder
- Rig type
- Fractional sloop with single trapeze; carbon spars commonly used under class rules
- Mainsail area
- 10.2 m² (class measurement)
- Jib/genoa area
- Approximately 8.4 m² (combined upwind sail area ≈ 18.6 m²)
- Spinnaker area
- 21.0 m² (symmetric spinnaker traditionally; modern asymmetric tunings used within class limits)
- Crew
- Two (helm and crew); single trapeze on crew
- Engine
- Not applicable (no auxiliary engine)
- Fuel capacity
- Not applicable
- Water capacity
- Not applicable
- Berths
- Not applicable
- Designer
- Conrad Gülcher and Uus van Essen (1951)
- Builder(s) / production notes
- Produced by a variety of builders over decades under one‑design control; class permits boats of varying construction if within measurement limits
- Production period
- First built 1951 — active class with ongoing measured boats and campaigns