-----------+---------------+---------+----------+------------+--------- Name. |Length between | Extreme | Depth of | Nominal | Burden |Perpendiculars.| Breadth.| Hold. |Horse-Power.| in Tons. -----------+---------------+---------+----------+------------+--------- | Feet. | Ft. In. | Ft. In. | | _Britannia_| 207 | 34 4 | 22 6 | 423 | 1,156 _Acadia_ | 206 | 34 6 | 22 6 | 425 | 1,136 _Caledonia_| 206 | 34 6 | 22 6 | 425 | 1,139 _Columbia_ | 207 | 34 2 | 22 4 | 425 | 1,138 -----------+---------------+---------+----------+------------+--------- [180] Built on the Clyde by Mr. R. Duncan, in 1840. Left Liverpool on her first voyage, July 4th, 1840. Material of vessel Wood Length, keel and forerake 207 feet Breadth of beam 34 feet 4 inches Breadth over paddle boxes 54 feet 8 inches Depth of hold 22 feet 6 inches Depth over planking 24 feet 8 inches Tonnage, builders’ measurement 1,156-45/94 Tonnage, new measurement 1,155-13/100 Tonnage, of engine-room 535-70/100 Tonnage, register 619-43/100 Length on deck 203 feet 7 inches Breadth of deck 31 feet 9 inches Depth of hold 22 feet 2 inches Length allowed for engine space 70 feet 7 inches Draught, mean, one-half of coals consumed 16 feet 10 inches Area of midship section at mean draught 520 Displacement at mean draught 2,050 tons Kind of engines Side-lever Collective H.P., nominal, per Admiralty 403 Cylinders, diameter 72½ inches Stroke of piston 6 feet 10 inches Diameter of paddle-wheel over floats 27 feet 9 inches Number of floats on one wheel 21 Dimensions of floats 8 ft. ⨉ 2ft. 10 in. Kind of boilers Flue (4) Number of furnaces 12 Grate, 6 ft. 2 in. ⨉ 3 ft. 222 square feet Total heating surface in boilers 2,698 square feet Coals consumed outwards to Boston viâ Halifax 440 tons Coals consumed homeward from Boston viâ Halifax 450 tons Mean draught of water, ship leaving Liverpool 17 feet 2 inches [181] Report of Committee of House of Commons, August 1846. [182]