The information transmitted may be relevant to all sizes and types of vessel and the selective message-rejection feature ensures that every mariner can receive safety information broadcasts which are relevant to their voyage.This manual is intended, primarily, for use by maritime Administrations and others concerned with the preparation and broadcasting of maritime safety information. It will also be of interest to seafarers, shipowners and others who need to receive such information in order to safely go about their business at sea.Additional info: Blank pages where not scanned and they are missing at this book therefor.