Note 30 — Chapter VI · STEAM IN THE BRITISH NAVY.
Reading edition
The Duke of Wellington was 240.6 feet long, 60 feet beam, 3,826 tons burthen, and 2,500 horse-power. She was engined by Robert Napier & Sons, Glasgow, with geared engines and wooden cogs, and made 10.2 knots an hour on her trial trip in 1853. The Rattler, of 1851, was 179½ feet long, 32¾ feet beam, had geared engines of 436 horse-power, and attained a speed of 10 knots.