Which rules apply?
- Hull and sails may comply with the class rules in force at the time they were certified, or with the current class rules
- Hull appendages and rig shall comply with the current class rules.
Changes required to an existing boat?
- None
Changes to the way a new boat is measured?
- The area of the sail (or parent sail) shall be marked on the sail tack
- Any hollows in the luff or leech of a sail shall be bridged for measurement
- The weight of the boat is recorded at initial certification measurement
- Measurement of all sails no longer relates to the profile of the measured sails but to the dimensions of the measured sails
- The sail measurement grid has 200 mm gridlines instead of 100 mm
- Tell tales are ignored for measurement
Changes to the way a new boat may be made?
- The length of limit marks shall be large enough to be visible when afloat
- Bow bumpers are required to be thicker at the lower end
- Certificated mainsails (the largest of the sails) shall have a luff length over 1990 mm and under 2200 mm
New freedoms?
- The boat may be lightened by any amount providing the waterline endings remain inside the waterline limit marks.
New prohibitions?
- Variable geometry of the hull
- Mainsails (the largest of the sails) with luff length below 990 mm
- Reefing of sails
- A rig without a mainsail
- Automated control of rig/sails
- Automated steering
- On board cameras
- Use of pictures while racing
Terms used here
- Current class rules – the rules being proposed
- Previous class rules – the rules prior to the ones being proposed

