Sails : Sails 27 August September 2014
RACERS 054 Bolt37/m.a.t/mcConaghYBoats maT 1180 I reland-based, American designer Mark Mills is having a prolific and successful time with his various race boat designs at the moment. Most prominent among these is the new IRC 72 Alegre in winning form at the Rolex Giraglia Trophy raced from St Tropez. However, Mills’ 39-foot MAT 1180 is the continuation of a more modest design series that already has produced the MAT 1245 and MAT 1010 IRC models built at Turkish yard MAT based in the Aegean seaport of Izmir, the country’s third largest city. MAT Directors Alp and Cem Somer wanted a race yacht that would encompass changes in the IRC rule affecting sub-40 footers, so their remit aimed at creating an aggressively light and fast boat yet economically built in vacuum-infused epoxy vinylester resin with an e-glass and PVC core, using carbon reinforcing. To achieve this, earlier in the year they turned to R&D partners KND Sailing Performance in Valencia, a specialist firm in CFD and VPP performance prediction, who have worked with Artemis, Volvo Groupama and other major sailing teams. After a CFD program covering more than 20 hulls they produced a powerful hull shape that offers low drag when upright in light airs with increasing stability as the hull form immerses with heel in stronger winds. This increase in form stability allows a lighter overall displacement ensuring high performance off the wind and in light airs. Producing the design to that lighter displacement was the key they believed, so experienced race yacht engineer Mark McCafferty, fresh from the Volvo 65 project, was brought in to ensure fully optimised composite engineering. This included hull, deck and internals. Also the carbon rudder and keel fin with socketed attachment to the hull, allowing easy separation for transport. This optimisation has delivered a light displacement for the MAT 1180 of 4,375 kg. Jason Ker bolT 37 W ith the launch of this 37-foot mini grand prix racer, Jason Ker has said that the ideal buyer for the Bolt37 is the cruiser-racer guy wanting to step up a gear while not scaring his accountant – the base boat is a modest Euro 169,000 (ex-factory). Optimised for the ORCi rule, where Ker reckons sub-40 footers could do well (too heavy at 6,050kg for HPR and penalised under the IRC that favours cruiser-racers), the first two examples of these Turkish-built boats have splashed and are racing. Hull #2 recently finished ahead of a fleet that included several Farr 40s, Farr 30s, a J122, an Archambault 40 RC and a First 40, despite an unfavourable IRC TCC of 1.168 for the new boat. Construction costs are minimised by a vinylester and e-glass build with Gurit Corecell M-foam laminate vacuum bagged by builder CSC Composites in Istanbul, a company specialising in carbon and fibreglass mould and boat production. For transportation the bulbed keel is removable, which should further keep campaign costs low. Overall shape of the Bolt 37 is neat with plumb ends and flush decks with flared aft sections, plus a narrow forward profile to provide windward capabilities. The rig is a high modulus Hall Spars mast, supported by rod rigging and twin aramid backstays; and the bowsprit is fixed for flying the 145 square-metre asymmetric downwind. Deck features include an offset forehatch for kite drops and the main hatch is also offset to give space for the starboard Harken halyard winches, creating a bias for port weather mark roundings. A simple cockpit layout has the standard tiller steering ahead of the main track with running backstay winches nearby and mainsheet winches ahead, while primary winches sit on extending bulkheads forward and run sheets through transverse tracks. However, hull #2 has the option of twin wheels, which is favourable for coastal racing. Below decks there’s a basic galley with plumbed sink, manual water pump and location for moulding a single burner stove but little else. Deep bulkheads and wide longitudinal stringers should give plenty of stiffness to this interesting new race boat from Jason Ker. The yard tells me they anticipate having a boat in Australia soon. www.bolt37.com LIGHT AND FAST Clockwise from left: the Bolt 37 is a Jason Ker design built in turkey that has just launched; the turkish-built M.A.t 1180 is a Mark Mills design optimised for iRC; the Ker 33 is an entry-level racer-cruiser from McConaghy China.
Sails 28 October November 2014
Sails 26 June July 2014