Sailing Abbreviations and Acronyms
- HOACHillingdon Outdoor Activities Centre
- HSOHydrographic Service Office
- HWQTropic High Water Inequality
- HYCHhrlem Yacht Club
- HYCHowth Yacht Club
- IBWMInternational Bureau of Weights and Measures
- ICIndex Correction
- ICCInternational Certificate of Competence
- IFDSInskructional Focus Documents
- ILCAInternational Laser Class Association
- ILCAInternational Lightning Class Association
- IMCOInternational Mistral Class Organization
- IMOCAInternational Monohull Open Class Association
- IMOCAInternational Monohull Open Classes Association
- IOCAInternational Optimist Class Association
- IODAInternational Optimist Dinghy Association
- IOMInternational One Meter
- IOMInternational One Metre
- IORIntercollegiate Offshore Regatta
- IRPCSInternational Regulations for Preventing Collision At Sea
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