| Name. | Length between Perpendiculars. | Extreme Breadth. | Depth of Hold. | Nominal Horse-Power. | Burden 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 4594 |
| Tonnage, new measurement | 1,15513100 |
| Tonnage, of engine-room | 53570100 |
| Tonnage, register | 61943100 |
| 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.
| Vessel’s Name. | Tonnage. | Horse-Power. | Proportion of Tonnage to Power. | Remarks. |
|---|---|---|---|---|
| Acadia (Cunard Company) | 1,136 | 400 | 1 h.p. = 2¾ tons | Exceedingly fast. |
| Oriental | 1,670 | 440 | 1 h.p. = 4 tons | 10¼ knots when deep on trial trip. |
| Great Western | 1,340 | 450 | 1 h.p. = 3 tons | |
| Great Liverpool | 1,543 | 464 | 1 h.p. = 3⅓ tons | |
| British Queen | 2,016 | 500 | 1 h.p. = 4 tons | Fast when light, and light stern breeze. |
| President | 2,366 | 540 | 1 h.p. = 4½ tons | Slow under any circumstances. |
| Liverpool (before alterations) | 1,150 | 404 | 1 h.p. = 2½ tons | Slow and crank. |
See Fincham’s “Naval Architecture.”
[183] Letter from E—— in the Civil Engineer and Architects’ Journal, January 1841.
[184] She was constructed of iron, and expressly for the Transatlantic trade. Her dimensions were, length of keel, 289 feet; 296 feet between the perpendiculars; and 322 feet over all. Her extreme breadth, 51 feet, with 32 feet 6 inches depth of hold, her main load draught of water being 16 feet; and her measurement 2984 tons, with engines of 1000 horse-power.