High-power rocketry is a hobby similar to model rocketry. The major difference is that higher impulse range motors are used. The National Fire Protection Association (NFPA) definition of a high-power rocket is one that has a total weight of more than and contains a motor or motors containing more than of propellant and/or rated at more than 160 Newton-seconds (40.47 lbf·s) of total impulse, or that uses a motor with an average thrust of or more. Types High-power rockets are defined as rockets flown using commercially available motors ranging from H to O class. In the U.S., the NFPA1122 standard dictates guidelines for model rocketry, while NFPA1127 is specific to high-power rockets. In most U.S. states NFPA1122 has been adopted as part of the legal code. A smaller number of states use NFPA1127. Associations The Tripoli Rocketry Association and the National Association of Rocketry are the major sanctioning bodies for the hobby in the US, providing member certifications, and criteria for general safety guidelines. In most other countries, where HPR is supported, the regulations are similar to or derived from the Tripoli Rocket Association Safety Code and the NAR High-power Certification system. In Australia, there are two nationwide HPR organizations. The Australian Model Rocket Society Inc. is the premiere representative body for rocketry which advocates for its various member groups and exists to serve the broader rocketry community. The Tripoli Rocketry Association has three prefectures in Australia, with launch sites in Victoria, New South Wales, and the ACT. In Canada, the Canadian Association of Rocketry - L'Association Canadienne De Fuséologie is appointed as regulator for the hobby. In New Zealand, the controlling body for rocketry is the New Zealand Rocketry Association or NZRA In South Africa, the controlling body for rocketry is the Rocketry Organization of South Africa or Rocketry SA. In the UK the British Model Flying Association or BMFA is the governing body with United Kingdom Rocketry Association or UKRA acting as the High Power Association for Motor flights classed as H and above. In Germany, Austria and Switzerland, the Interessengemeinschaft Modellraketen has an approved HPR certification program which is cross-recognized by NAR, CAR and UKRA. Certification Certification in the United States and Canada Unlike model rocketry, certification is required by the governing organizations in order for individuals to fly high-powered rockets. The certification system is standardized across the hobby and governing organizations. There are three levels of