Royal Yachting Association unlimited hydroplane rating is a rating applied to hydroplanes competing for the water speed record, as applied by the RYA. It is usually denoted by a circular white badge on the hull, with an infinity symbol "∞" above the K and number for RYA "unlimited" hydroplane group.
Royal Yachting Association unlimited hydroplane rating is a rating applied to hydroplanes competing for the water speed record, as applied by the RYA. It is usually denoted by a circular white badge on the hull, with an infinity symbol "∞" above the K and number for RYA "unlimited" hydroplane group.
Source: Wikipedia "Lloyd's unlimited rating" · CC BY-SA 4.0
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