Steam engines for propelling small craft were well represented at the Naval and Submarine Exhibition of 1882. The exhibits included: a 12 and a half inch by 22-inch by 18-inch stroke 120 indicated horsepower inverted-vertical compound marine engine built by Messrs Burrell, Thetford; a launch (length 20 feet, beam 5 feet, draught 2 feet 6 inches) fitted with a small single cylinder marine engine by Very; a 12 and a half inch by 20 and three quarters of an inch by 12-inch stroke inverted-vertical compound marine engine built by Messrs Forrest, Millwall; a steel launch fitted with a pair of simple marine engines built by Messrs Halsey; a teak launch (length 22 feet, beam 4 feet 9 inches) fitted with two pairs of single-acting cylinders set at right angles to each other, built by Messrs Vosper; an inverted-vertical compound marine engine considered to be the highlight of the exhibition, built by Messrs Copley and Co., Middlesborough; two twin-cylinder simple marine engines designed by Mr Wigzell, and built by Messrs T Bates and Co., Sowerby Bridge; several launch engines including two simple marine engines with 6-inch by 8-inch twin-cylinders, and a 5-inch by 6-inch stroke single-cylinder marine engine built by Mr Gabriel Davis, Abingdon; a single-cylinder marine engine that drove two propellers in opposite directions [contra-rotating], using a solid shaft rotating inside a tubular shaft, built by Mr Somerset Mackenzie, London.