Tiamat a 40' IRC Racer/Cruiser is the latest performance IRC design from Mills Design to be launched. Built by Vision Yachts and named after a Babylonian dragon goddess she has been designed for a client whose racing ambitions are underpinned by a genuine desire for a dual purpose design. He intends to race in major events inshore and offshore, go Thursday night racing with friends, and occasionally take the family for a leisurely coastal cruise. The racing program starts with the Scottish Series next week, and is followed by the IRC Nationals in the Solent a week later.
This mix of use is similar to Mils' DK 46 design, already winner of the Spring Series and DeGuingand Bowl this year, and combines real performance with a genuine interior from Design Unlimited with three double cabins, enclosed head, and comfortable saloon complete with removable drop leaf table capable of being erected in the cockpit.
The clients background in electronics has placed a focus on the nav area in particular, with a hinged flat panel screen from which he can monitor the instruments, or swing it forwards to become a TV screen for the saloon. On deck the dual-purpose theme continues with coamings and seats framing a comfortable central cockpit space and 6 hatches in the coachroof, but twin wheels and cutaway sidedecks aft emphasizing the boats performance ambitions. Neat detailing from Vision on features such as the under deck mainsheet, through transom backstay to an internal ram, and curved main hatch contributes to the refined feel of the deck layout, and reflects the excellent collaborative relationship between owner, designer, engineer, and builders.
Construction is e-glass and epoxy over corecell, with a SG iron fin and lead T bulb. Visions' experience and commitment to building a true performance Racer/Cruiser using well thought out in-house techniques paid dividends in time and build quality, such as installing much of the interior components in the hull while still upside down on the plug to maintain accurate hull geometry.
The swept spreader carbon mast from Formula Spars shares some dimensions with a Farr 40 rig allowing the owner to benefit from sail design developments in that class, and to pick up existing sails for a practice suit to protect the North 3DL upwind race inventory, while UK will provide the downwind inventory with particular input from Des McWilliam in the Crosshaven loft. Some of the new features on show include push-button 12v hydraulics we have developed with Meridian replacing manual panels, and a 'magic wheel' traveller control system from Diverse Yachts.
The numbers for Tiamat reflect her cruiser/racer ambitions, with increased overall displacement relative to a raceboat without a corresponding increase in rig size. These sail area/displacement and displacement/length numbers keep her just on the performance side of the middle ground that IRC promotes at medium and smaller sizes, embracing the bulk of production and dual purpose designs. At larger sizes however IRC's increased permissiveness with increasing size which is part of the size effect at work within IRC has led to some interesting developments in studies for custom IRC raceboat clients.
|LOA||12.34 m||40.47 ft|
|LWL||10.46 m||34.30 ft|
|Beam 3.70 m||12.14 ft|
|Draft||2.65 m||8.69 ft|
|Displacement||6300 kg||12600 lb|
|Sail Area 89.4 m2||962 ft2|
|Disp. / Length||153|
|Sail Area / Disp.||26.31|
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