One of two Batoum class torpedo boats (length100 feet, beam 12 feet 6 inches) fitted with compound surface-condensing engines of 550 indicated horsepower built for the Austro-Hungarian Government by Yarrow and Co., Poplar, achieved a speed of 22.1 knots at trials observed by Count Cassini the naval attaché and the chief officers of the constructive and engineering departments of Pola. Both vessels were fitted with two steam-actuated rudders, one forward and one aft giving them exceptional manoeuvring capabilities. Their torpedo tubes were totally enclosed, thereby overcoming some of the previous objections to having the forward ends of the torpedo tubes exposed. With a coal consumption of 196 pounds for 4 hours of continuous steaming at eleven miles per hour these vessels had an estimated range of 1,200 miles without refuelling. The Batoum had steamed from London to the Black Sea, six vessels of the same dimensions built for the Greek Government had arrived safely in Greece and two similar boats built for the Argentine Government had steamed to Fiume and across the Atlantic thereby proving their steaming capabilities and seaworthiness.