21B.11.1 An adequate supply of fresh drinking
water should be provided and piped to convenient positions throughout
the accommodation spaces.
21B.11.2 In addition, an emergency reserve supply
of drinking water should be carried, sufficient to provide at least
2 litres per person the vessel is certificated to carry. The installation
of fresh water making machines and disinfection arrangements are to
be to the acceptance of the Administration - for this purpose silver
ionisation or chlorination would be considered acceptable.