Section 24(1) in The Merchant Shipping (Crew Accommodation) Rules, 1960
(1)In every ship to which these rules apply, there shall be available a supply of fresh water sufficient for the was-basins, baths and showers fitted in compliance with these rules. The supply shall be provided from tanks of a capacity of at least 45.46 litres for each member of the crew for each day likely to elapse between successive replenishment of the water or by other equally efficient means. If service tanks are fitted for that purpose they shall be directly connected with the ship's main washing water or drinking water storage tanks. In ships of 1,000 tons or over any pumping necessary for the supply of fresh water shall be mechanical power.
