IEC 61097-4:2012+A1:2016+A2:2019 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), its amendment 1 (2016) and its amendment 2 (2019). Therefore, no need to order amendment in addition to this publication.