General information SafetyNET is an international automatic direct-printing satellite-based service for the promulgation of Maritime Safety Information (MSI)@ navigational and meteorological warnings@ meteorological forecasts@ Search and Rescue (SAR) information and other urgent safety-related messages to ships. It has been developed as a safety service of the Inmarsat-C Enhanced Group Call (EGC) system to provide a simple and automated means of receiving MSI on board ships at sea. The message-selection features of SafetyNET receivers enable mariners to receive safety information broadcasts that are tailored to their particular needs. SafetyNET fulfils an integral role in the Global Maritime Distress and Safety System (GMDSS) developed by the International Maritime Organization (IMO) and incorporated into the 1988 amendments to the International Convention for the Safety of Life at Sea (SOLAS)@ 1974@ as amended@ as a requirement for ships to which the Convention applies. This Manual describes the structure and operation of the International SafetyNET Service. It is intended primarily for national Administrations and registered information providers@ but may also be useful to the mariner who requires more operational information than is found in manufacturers' equipment manuals.