Negative camber in the deck

Do Class Rules 3 and/or 4 prohibit one or more appendages, placed on the centreline and aft of the aft waterline ending and wholly above the waterline.

What is the proper way to measure the measurement "B" on the International "A" Class boat

When mainsail is a luff sail.

Measurement with a jackstay.

If the words 'mast' and 'boom' in 7.1.1 are taken as the ERS meaning, is it permitted to alter the presence, position and geometry of rigging, spreaders, jumpers, backstay crane, fittings etc within the requirement of 7.1.1 to use the mast and main boom 'as measured'?

Where a boat uses both double and single luffed mainsails should there be one main boom limitation mark for the dimension ‘B’ or two?

Revised 2016 class rules for the International A Class

2016 release notes for certification authorities and measurers

Revised 2016 class rules release notes (long form)

Revised 2016 class rules release notes (short form)

2016 A certificate spreadsheet

A 2016 boat measurement form

A 2016 rig measurement form

Revised 2018 class rules for the IRSA A Class

Notes on the significant changes and their rationale

2018 A certificate spreadsheet

Revised 2018 class rules for the IRSA 65 Class