The Hadron H2 singlehander dinghy by Keith Callaghan

Hadron H2 dinghy by Keith Callaghan and Hadron Dinghies Ltd

The HADRON H2 Dinghy

Hadron H2 is a carbon/epoxy composite commercial development of the original Hadron singlehander dinghy designed in 2011.

The first boat was launched in February 2016 and at February 2026 there are over 100 boats, in 6 countries. Yachting journalist David Henshall carried out a Boat Test of the H2 for Yachts and Yachting. View the article here.

The Hadron H2 singlehander dinghy is sold in the UK by Hadron Dinghies Ltd. Their website contains full specifications and prices.

There is an active class association: see their website HERE.

The first national championships were hosted by Warsash SC on 2-4 June 2017. Every H2 then built attended. Since then the class has grown into thriving group of enthusiastic sailors.

Principal Dimensions:
Length over all	4.20 metres
Length on waterline	4.20 metres
Beam	1.95 metres
Bare Hull weight	54kg
Sailing weight (Including foils, fittings, spars and sail)	76kg
Sail area	9.3sq metres
RYA Portsmouth Number, 2026:	1045

A lot of thought has gone into making sailing the Hadron H2 dinghy a pleasant and rewarding experience. Here are some of the main features, many of which are shared with the original Hadron:

The extremely light, performance-orientated but forgiving hull form and rig produces a versatile, manageable dinghy which can be sailed on lake, river or sea, with good performance to windward and also offwind. An easy performance dinghy for novices. Excellent handling and exhilarating performance for experienced sailors.
A unique, 2 compartment buoyancy configuration which ensures that the boat floats low in the water when on its side, thus facilitating righting. The boat floats on its side with the centreboard just clear of the water, and when righted retains a very modest amount, which can be evacuated via the self- bailers within a minute or so, even in light conditions.
The angled boom provides plenty of headroom for ease of tacking.
The large, deep cockpit area and ergonomic side decks provide a comfortable sitting out position. The central buoyancy compartment acts as a useful seat in light conditions. There is also a thwart for that purpose.
Rig controls are led to cockpit sides for easy adjustment afloat.
The flared hull, good freeboard and wide gunwhales minimise spray and keep the crew dry in all but the windiest conditions.
One of the biggest difference between the H2 and the original Hadron is the WEIGHT. The latest materials and techniques are used in the hull manufacture. The hull layup consists of carbon cloth with additional carbon/aramid reinforcement in areas liable to hardest use. The result is a hull which is extremely strong and long-lasting and significantly lighter.

For several videos on the H2, go to YouTube: Hadron H2 Class Association.

The CLASS RULES are now available here.