When an A Class boat is raced without optional equipment on board, does it comply with the class rules when its weight is below the lower limit for boat weight because optional equipment is omitted?

The full text of the discussion and conclusion, under the 2017 CR and previous CR, will be posted here as a download. For the sake of brevity the conclusion is posted here:

The CR permit several items of the rig that shall be on board for certification control to be omitted for racing. The CR do not require sails to be on board during certification control. Further the CR permit the headsail to be omitted when racing.

It follows that the weight of the boat when racing is permitted to be lighter than the certified weight less the tolerance.

It follows that the weight of the boat when racing is permitted to be heavier than the certified weight plus the tolerance if the sails used weigh 200 grams or more.

At an event for A Class after 30^th June 2016

At an event for A Class after 30^th June 2016 the 2016 CR apply. Section C of the 2016 CR applies to all boats so this (discussion and) conclusion applies equally to boats competing under certificates issued under previous class rules.