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RC44

Technical Data

BOAT DIMENSIONS:


            LOA                13.35m               43.8'

            Bmax               2.75m               9'

            Draft                2.90m               9.5'

            Displ                3560kg             7850lbs

            Keel                 2200kg             4850lbs

            Crew                680kg           

            Engine             20HP inboard diesel with retractable drive

 


SAIL DIMENSIONS:


            G -3                   39m²                517sqft

            G -1                   60m²                646sqft

            Main                   70m²               753sqft

           Gennaker   y;      170m²             1722sqft

           Gennaker            150m²             1399sqft


 
 
CONCEPT:

This is a light-displacement racing yacht designed to be fast downwind and powerful upwind. It has a high aspect ratio keel with a trim tab and rudder.

EASY TRANSPORT CONCEPT:

The specially designed canting trailer, easy detachable stern scoop and simple keel to hull attachment with a conical joint/coupling makes the boat very easy to transport and store. The mast is also built in two structural parts making the boat easy to transport on the road with no oversize restrictions.

STRUCTURAL DESIGN:

The hull, deck, structural liner, keel, rudder and rig were calculated and structurally optimised using Nastran software for the FEM analysis.

CONSTRUCTION:

Hull, deck and stern scoop are built in sandwich construction of epoxy resin and exclusively carbon unidirectional and biaxial fabrics, while the twill carbon woven rowing is used to give a smooth, clear, carbon look finish on all external surfaces. The core material is 5-20mm and 75 to 200 kg/m3.

The internal structure is a double cross frame designed to take all the keel, mast and shroud loads minimizing the hull and deck stress and deformation. It is built of epoxy resin and exclusively carbon unidirectional and biaxial fabrics, while the twill carbon woven rowing is again used to provide a smooth finish on all visible surfaces.

Female moulds for the hull, deck liner and spoiler are built to extremely high standards from CNC machined plugs, to guarantee minimal building tolerances. All composite parts are built according to SPSystem specification, vacuum bagged and postcured in an oven.

KEEL & BULB:

The keel is built of carbon pre-preg material in carbon moulds postcured at high temperature and pressure in an autoclave. A weed cutter is fitted in the keel leading edge. The trim tab is built in carbon with RTM technology. The lead-antimony bulb is cast in CNC machined steel mould for high precision and faired with epoxy compound.

RUDDER & STEERING SYSTEM:

The rudder and tapered rectangular section rudder shaft are one piece carbon built with RTM technology in a high precision female mould. The rudder shaft structure is FEM optimised and dimensioned according to ABS loads for speed of over 26 knots.

The steering quadrant, steering pedestals and wheels are exclusively designed and built in carbon.

The oversized Jefa self-aligning bearings, chain transmission steerers, steering sheaves and reliable vectran cable guarantee extremely precise performance with low maintenance.The result is a well balanced boat that handles with two fingers even when sailing at surfing speeds!

GENERAL:

Flushdeck, large racing cockpit with twin steering wheels, pedestal driven primary and mainsheet winches, recessed jib tracks and winches, ergonomic sidedecks and steering position, retractable and pivoting bowsprit, customized top quality deck hardware. Non skid treated walk upon areas.

TOE RAIL:

A custom carbon toe rail is fitted from bow to mast.

WINCHES (Harken):

Halyard: 2x B40.2 STA  - Primary: 2x B530 TCR UD pedestal driven  - Main: 1x B55.3STR pedestal driven

DECK HARDWARE (Harken):

Jib system: midrange (4:1 car purchase) - Main system: bigboat (2:1 mainsheet, 4:1 car purchase).

The deck hardware is oversized to provide low maintenance. All the control lines, main sheet, backstays and gennaker retriever system are fitted under the deck to keep the deck as clean as possible. The hardware layout was optimised in extensive sailing trials with Russell Coutts' match race crew.

HATCHES:

The foredeck hatch is AC style shaped, the carbon cover has fast release fittings, the edges are rounded for easy gennaker-retriever operation. The cockpit engine drive inspection hatch is fitted with a carbon cover with fast release fittings.

MAST & RIGGING:

The mast shape has a variable section, designed specially for this boat, to improve the mast-sail aerodynamic interaction. The mast is produced in two segments for transport reasons, the joint is at the second spreader position and is secured with titanium bolts and titanium backing plates. Rig is fractional with three backswept spreaders. Standing rigging is continuous in PBO with turnbuckles below the deck, to save weight to reduce windage and provide a clean visual appearance. The boom and pivoting retractable bowsprit are also made of carbon. The running backstays are non structural. The PBO forestay has a hydraulic ram tensioner and is fitted with headfoil as standard. Running rigging is in Spectra.

ENGINE:

Volvo 20HP diesel engine is fitted with specially developed retractable drive. The compact hydraulic transmission is moved up and down with two electro-hydraulic rams with remote controls at the steering position.
 

PLUMBING:

A cockpit operated hand bilge pump and an automatic electric bilge pump are fitted as standard.

ELECTRONICS:

A complete set of B&G Hercules2000 sailing instruments with mast unit, GPS, electronic compass, speed and depth transducers, trim tab and rudder angle transducers, one multi-display on the coffee grinder pedestal (for rudder and trim tab angles) and up to five 20/20 maxi displays fitted in a carbon rack on mast.

Boat owners, please refer to the official document in the meeting room.

The carbon construction provides a stiff but light structure with a low centre of gravity. The sail area is very generous and the open cockpit allows the boat to be raced short - handed.