Express was subject to an extensive series of trials over an 18-month period in an attempt to reach the contracted speed of 33 knots. Although Lairds managed to drive the ship's machinery to up to , well in excess of the rated , and experimented with different propellers, Express failed to reach the required speeds.
Express underwent a rigorous series of trials spanning 18 months with the aim of reaching the contracted speed of 33 knots. Despite Lairds driving the ship's engines to , which was significantly above the rated , and experimenting with different propellers, Express did not attain the required velocities.