High Performance Rule

HPR was developed to create a grand prix level development rating rule for modern planing racers.

Getting an HPR Rating

If a boat has been measured for IRC, ORCi or ORR, then much, if not most, of the data needed for a Full Measurement HPR certificate is available.
See below for specific additional data required beyond what is available from the measurements for these other rules.

If a boat has a Fully Measured ORR or ORCi certificate the following data is required:

  • CPW (Chainplate Width) and CPD (Chainplate Diagonal) for spreader sweep angle calculation
  • FBI (Freeboard at Fore Side of Mast)*
  • FO (Forward Overhang)*
  • Y (Height of Transom) above (or below) the water*
  • Additional flotation measurements will be required if the weight of all items in the boat’s Measurement Inventory is not available
  • Headsail measurements (unless a sail certificate will all dimensions is available):
    - JH (Headsail Top Width)
    - JGT (Headsail 7/8 Width)

* these are measured in “lightship” trim (i.e. like IRC)

The ORR/ORCi certificate displacement and stability will be corrected to “lightship” trim which is based on a truly empty boat. This is only possible if the Measurement Inventory weights are available.

If a boat has an Endorsed IRC certificate the following data is required:

  • CPW (Chainplate Width) and CPD (Chainplate Diagonal) for spreader sweep angle calculation
  • FBI (Freeboard at Fore Side of Mast)*
  • FFM (Freeboard Forward Measured)*
  • FAM (Freeboard Aft Measured)*
  • VCG – Contact US Sailing to determine the measurements required
  • Rig IG, ISP, BAS, FSP
  • Mainsail measurements (unless a sail certificate with all dimensions is available):
    - HB (Mainsail Top Width)
    - MGL (Mainsail 1/4 Width)
  • Headsail measurements (unless a sail certificate with all dimensions is available):
    - JH (Headsail Top Width)
    - JGL (Headsail 1/4 Width)

* these are measured in “lightship” trim (i.e. like IRC)

HPR Class Rules V4h

Learn more about the HPR Class

US Sailing HPR Contacts

Jim Teeters: 401-683-2935
Eric Baittinger: 401-366-3113