Section 8(2) in The Merchant shipping (Radio Direction Finders) Rules, 1968.
(2)The master of every ship shall maintain or cause to be maintained a separate record and whenever any batteries providing source of electrical energy for radio direction-finder are charged, or r when such batteries are tested daily by a Voltmeter, or when such batteries are tested monthly by a Hydrometer, as required by sub rule (1), he shall make or cause to be made appropriate entries in the said records in regard to such charging or testing of batteries. The said record shall be placed on board together with records of calibration maintained under rule 13 and shall be made available to the radio inspector for inspection at any reasonable time.
