IEC 61097-4:2012+A1:2016(E) specifies the performance requirements and methods of testing for Inmarsat-C ship earth stations (SES) capable of transmitting and receiving direct-printing communications, and for enhanced group call (EGC) receivers, for use in the GMDSS and for use for long-range identification and tracking (LRIT). This consolidated version consists of the third edition (2012) and its amendment 1 (2016). Therefore, no need to order amendment in addition to this publication.