(Addition) *12 (ii) Shroud Plates. 

* a) Maximum distance from edge of deck (excluding gunwale rubber) to centre of pin hole is not to be more than 3"

* b) Maximum distance from inside transom (excluding fashion piece) to a line joining centre of pin holes is not to be more than 8’ 11½".
 
 

(Addition) 23. * c) Minimum angle between leading edge of rudder when fully down and extension of keel at point of intersection to be not less than l05 degrees.
 
 

(Addition) 24. * c) Minimum angle between leading edge of centreboard when fully down and tangent to keel at point of intersection to be not less than 100 degrees.
 
 

(Addition) 25. * c) Centre of pivot hole from aft face of forward bulkhead: maximum allowed 11¾", minimum allowed 10 ¾". Centre of pivot hole from upper face of hog: maximum allowed 1’ 10¾", minimum allowed 1' 9¾".
 
 

(Change) 29. Buoyancy 
The two transverse bulkheads must be watertight, but may be fitted with hatch openings as specified in rules 9(d), 9(e), 13(b), 13(c), and water-tight hatch covers. Two drain holes, of maximum diameter 1" are permitted in bulkheads and transom, but must be effectively stoppered while the boat is in the water. It is not practical fully to test the buoyancy compartments by total immersion owing to their large volume. Measurers are to check all watertight joints and satisfy themselves that they are efficient and that the hatches are adequately watertight. The owner is advised to test the buoyancy annually by floating the boat in a waterlogged condition, with the water overflowing the top of the centreboard case. After 20 minutes in this condition the boat should be bailed out and the tanks inspected for leakage.
 
 
 

(Change) 30. Prohibitions
The following are prohibited - - electric bailers. Running of main sail sheet and pulley blocks from centre of boom to centreboard box or keelson in lieu of using traveller track at transom to end of boom attachment fitting. Inside ballast or ballast carried by the crew. Centreboard winches, rotating masts. Any apparatus or contrivance extending outboard from the hull, spars, rigging or attached to the crew, the purpose or effect of which is or may be to support or assist in supporting a member of the crew outboard or partially outboard. Projections beyond the skin, other than gunwale rubbers, fendoffs, bilge keels, stem band, keel band, bilge keel bands, rudder fittings, drain plugs, suction bailers, speedometer pivot head, and fixed bow eye in bow of boat.

(Additions) 31. Modifications allowed.
The following are allowed - - Installing adjustable track type fairleads and/ or replacing the jib tack strap cable with link chain. Installing Novex tension blocks (or similar) and jib sheet winches. Removing oar lock bracket fittings and plugging holes. Installing full width transom track with adjustable stops in lieu of standard. Adding additional pulley blocks along boom from the boom, fixed swivel block along with jam or tension blocks and cleats. Rearrangement of hiking straps. Adjustable spinnaker and whisker pole fittings on a track on the mast.

(Addition) 32. Special Rules.
Replacement of centreboard or rudder blades must be to original design specifications. Intentional adjustment of standing rigging after the preparatory signal of a race is not permissible.
 

The present rule 12 is to be renumbered 12 (i) and rules 31, 32 and 33 are to be renumbered 33, 34 and 35 respectively.