Hadron dinghy by Keith Callaghan
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The HADRON Dinghy

HadronHadron is a new dinghy design for 2011. I have got back into racing dinghy design in the last few years, and in 2011 started crewing Merlin Rockets - in particular MR3708 "Wicked". As part of my fitness training I built a new singlehander design which I have developed from the same hull shape as "Wicked". Although the market is full of singlehander dinghies, the search is still on for a singlehander which will fulfil the requirements of the experienced dinghy sailor who is perhaps, like myself, getting on a bit, but who nonetheless demands good performance, and without too much pain. In other words, the boat must have impeccable handling characteristics, be comfortable to sit out and to sit in, easy to right after a capsize, and of course be a joy to sail. Just like a Merlin Rocket.

The boat is of 4 plank plywood construction, and is specifically designed to be easy to build. A kit of plywood parts can be made available, or full size drawings of the building frames and the major plywood parts (including the planks) are available (click on "purchase plans" link above).

Principal Dimensions:

Length over all4.27 metres
Length on waterline4.20 metres
Beam1.95 metres
Hull weight
(inc centreboard, ex rig)
83kg
Sail area 10.0sq metres
Portsmouth Number approx 1080
HADRON is launched, while Michael McNamara casts a critical look at his sail

A lot of thought has gone into making sailing the Hadron dinghy a pleasant and rewarding experience. Here are some of the main features:

  • The 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.
  • Hadron has a long, low bow tank and aft of this buoyancy is provided by a fore and aft compartment along the centreline. This configuration will ensure 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 modest amount, which can be evacuated via the transom flaps within a minute or so, even in light conditions.
  • The high boom provides plenty of headroom for ease of tacking.
  • The large, deep cockpit area and ergonomic side decks provide a comfortable sitting out position, and allows 2 people to be aboard for leisure sailing. The central buoyancy compartment acts as a useful seat in light conditions.
  • The hull has 3 separate buoyancy compartments. One acts as a dry storage compartment at forward end of cockpit for gear and picnic items.
  • 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.

Hadron"s sails are being designed and developed in conjunction with Michael McNamara. Michael has made several prototype sails which he has tested on his Harrier dinghy.

Several sets of plans have already been sold since this page went live (January 2011). Below you can see images of the building of my own Hadron, and its launching on 29 June 2011 at Wroxham Broad, Norfolk. Click on any image to see an enlarged version.

Carl Cramer of Woodenboat magazine has nominated Hadron as his "Wooden Boat of the Week " (26 July 2011).

YACHTS and YACHTING, January 2012 edition (on sale 8 December 2011) features HADRON in its "New Boats" section (page 60). A full review is promised in Spring 2012.

HADRON, layout plan - PDF file
HADRON, plywood cutting diagram - PDF file
HADRON, construction notes - PDF file

the finished plank #3, laid on the full size plan Scarfing the topside planks The building frames are assembled A laser level is used to align the frames
All the frames are erected Plank 2 and the hog are tested for fit on the frames Plank 2 The hog
Plank 1 (starboard side) Plank 2 (port side) is installed Plank 3 (port side) is installed Plank 4 (port side) is installed
The hull, ready for painting The hull, ready for painting First gloss coat applied First gloss coat applied
Off the building jig at last Transom view Bow view Satisfaction!
progress on the interior bow view - interior stern view - interior Painting of the interior commences
The foredeck beams are in place Decks nearly completed All woodwork completed! All woodwork completed!
Hadron and Merlin Rocket cousin WICKED Hadron Hadron on trailer Hadron on trailer
Hadron is launched The designer sailing HADRON The designer sailing HADRON The designer sailing HADRON
Hadron and Harrier #70 "Pilgrim" Michael McNamara sails HADRON Hadron at Alton Water Hadron at Alton Water
Hadron planing in 12 knot wind Hadron planing in 12 knot wind Hadron planing in 12 knot wind Water retained after capsize
Hadron planing Hadron with new sail
Click on this image to see a video of the first sail of Hadron Click on this image to see a video of the second outing for Hadron Click on this image to see a video of Steve Dunn sailing  Hadron. NOTE: 32mb file will take several minutes to download Click on this image to see a video of Steve Dunn sailing  Hadron at Alton Water SC on 6 Nov 2011. NOTE: 23mb file will take several minutes to download

© This site is the copyright of Keith Callaghan. This page was last updated on 11 January 2012.

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