Plan B

International One Metre Racing Yacht

SHOWCASING - PLAN B - A HIGH PERFORMANCE IOM RACING YACHT FOR COMPETITIVE RC SAILING

RIGS

The rigs are supplied ready to have sails fitted.

All three rigs now use 11 mm diameter x 0.6 mm wall black or silver, high-tensile aluminium mast sections and your choice of  Sailsetc black or silver boom sections.   

The A rig mast has 12 mm forward pre-bend rolled evenly from the head to 900 below, the B rig mast has 8 mm forward pre-bend rolled evenly from the head to 600 below and the C rig mast is without pre-bend.  With all three rigs, the back-stay can be tightened, without or with the mainsail mounted, removing this pre-bend to achieve a perfectly straight mast.  On Plan B yachts, A and B rigs use the forward shroud positions at the deck and the steeply raked C rig uses the aft shroud positions.

Spreaders of the A and B rigs are bespoke from 3 mm diameter aluminium.  The C rig is without spreaders.

The  jackstay-style mainsails are cut to suit a straight mast and will accept only very little aft bend adjustment.

Shroud heights, jib-boom pivots, mast pre-bend and mast rake are combined to give a rig that will automatically adjust to wind gusts, freeing and flattening both jib and mainsail in harmony.  This allows the correctly trimmed yacht to sail close-hauled to windward, in balance, needing only minimal helm correction.  

The mast has a plain, cylindrical plastics step.  In the hull, the mast-step base is flat and parallel to the waterline.  This allows the mast step  angle to be tuned to the rake used, helping to keep the lower mast in column. 

B and C rigs have internal mast corrector weights, to bring them to a nominal A rig weight.

Fittings are a selection of Sailsetc commercial and Plan B bespoke.  

 

A PERFORMANCE IOM DESIGNED AND BUILT IN AUSTRALIA BY PETER BURFORD
"Everyone needs a Plan B"