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It seems to be a very simple question, but sometimes we may get misguided by contradicting statements in different sources. The problem is that unnecessary self-testing of this equipment can reduce the overall run time available in an emergency. Each self-test draws a small amount of energy from the battery.
The answer is very simple. As per SOLAS requirements adequate information should be provided to enable GMDSS equipment to be properly operated and maintained. Thus the manufacturer’s instructions shall be used as a reference for such tests.
