Historical
ISO 22554:2007
Ships and marine technology - Propeller shaft revolution indicators - Electric type and electronic type
ISO 22554:2007 specifies the construction, performance requirements, methods of testing and required test results for electric and electronic propeller shaft revolution indicators required by clause 2.5.4, Regulation 19, chapter V, SOLAS 1974 (as amended, 2000).
International Organization for Standardization [iso]