The professional discussion of Italian flotilla-leader trials asks what apparatus measured torque and thrust. The author reports no routine water-temperature correction for tank results, but avoids summer propulsion tests because heat distorts the paraffin models. Winter tank temperatures remain between 12 and 15 degrees Celsius. Tables supply the figures behind small printed curves for speeds between 20 and 40 knots. The readings refer to a displacement of 1,850 tons, close to the ships' trial condition. British interest in this size of destroyer is connected with the later emergence of the Tribal class.
Chapter · 2:08:22-2:12:05
Italian flotilla-leader trials and the 1,850-ton destroyer problem
Italian flotilla-leader trials raise questions about thrust measurement, model distortion, and the performance of destroyers around 1,850 tons.