 At 13.05 knots it was found that her capacity of about 91 tons (92.5 tonnes) of coal, consumed at a rate of per IHP per hour, gave her a steaming range of about 4,000 nautical miles.Torpedo boat destroyers of the 30-knotter specification featured watertight bulkheads that enabled them to remain afloat despite damage to their hulls, which were thin and lightly built for speed.Conversely the thinness of their hulls meant that they were easily damaged by stormy seas and careless handling.