Section 5(a) in The Merchant Shipping (Fire Appliances) Rules, 1969
(a)appliances capable of rapidly supplying at least two simultaneous jets of water, not emanating from the same hydrant, at least one of which shall be from a single length of hose and reaching any part of accommodation and service spaces normally accessible to the passengers or crew while the ship is being navigated when all watertight doors and all doors in main vertical zone bulkheads are closed;
