In this section you can find the A-Cat Class rules and measurement guidelines. File Attachment: ACAT2018CR06062018.pdf Measurers Guidelines 01-06-2019.pdf IYRU Measurement and Calculation of Sail Area Instruction.pdf A-Cat Hull Measurement Form-01-06-2019.xlsx A-Cat Sail Measurement Form-1-2-2016.xlsx A-Cat Mast Measurement Form-19-9-2017.xlsx A-Cat Hull Measurement Form-01-06-2019.numbers A-Cat Sail Measurement Form-1-2-2016.numbers A-Cat Mast Measurement Form-19-9-2017.numbers 2020.02.14-definition_of_classic_2020.pdf Classic rule 2.pdf Classic rule 3.pdf