GB/T 3 2065.6 - 2015 "Methods for environmental testing of marine instruments, Part 6: Constant humidity cabinet test" specifies the requirements and procedures for constant humidity cabinet testing of marine instruments in high relative humidity environments. The standard is used to evaluate the use and storage adaptability of marine instruments in high heat and humidity environments to ensure their Reliability and Stability in practical applications. The standard describes the requirements, procedures and related information of the test in detail, providing systematic guidance for the heat and humidity environment testing of marine instruments. Applicable normative references include GB/T 3 2065.1 - 20 1 5 Methods for environmental testing of marine instruments, Part 1: General.