标准摘要
[中文适用范围]： ISO 22090-2:2014(E)定义了基于地磁原理的船用发射航向装置（THD）的性能要求和测试方法。 [外文原描述]： ISO 22090-2:2014 specifies the construction, performance, and testing of a device employing only magnetic means as transmitting heading devices required by chapter V, SOLAS 1974 (as amended).
英文名称Ships and marine technology — Transmitting heading devices (THDs) — Part 2: Geomagnetic principles