×5.5 = 1.1 tonnes per 5.5 minutes Capacity of the leak to admit water = 2.25 tonnes per 5.5 minutes In 5.5 minutes, net water accumulated by the leak = (2.25 – 1.1) = 1.15 tonnes Thus, to admit 92 tonnes of water, it will take
5.5
1.15
×92 = 440 min =
440
60
hrs Speed required for the ship to sail through safely =