Navigational Warnings : Warnings regarding hazards to safe navigation of ships, issued by Maritime New Zealand and the New Zealand Hydrographic Office and broadcast by coast stations.
Ministry of Business, Innovation and Employment, Glossary of terms and acronyms, Wellington, New Zealand 2010. http://wwwsosh.govt.nz/resources/glossary-u.shtml, (Occupn Hlth and Sfty - Brit) {530}