about 25 ft. Twin Screw Engines of 120 horse power, and a speed of 12 Knots might be built to carry 15000 or 16000. She could hardly be made to draw less than 10 or 11 feet of water.
To be efficient She should be armed with two 20 pounders Reloading Guns on Deck. They are the smallest that Exceed a mere field gun & do not require many men to work them. The time which would be required to build a Steamer of this class would be about 6 months. The annual cost of her maintenance Cannot be estimated at less than £5000.