Benbow displaced 10,600 tons and measured roughly 330 feet long, with a 68-foot 6-inch beam and a 27-foot 10-inch draught. Her two-shaft compound-engine installation produced 8,658 indicated horsepower under normal draught. Forced draught, which drove additional air into the machinery, raised output to 10,860 indicated horsepower. She made 15.7 knots normally and could reach 17.5 knots under forced draught. Her complement was 523, and the armament summary lists twelve six-pounders alongside the main guns, six-inch battery, and five above-water torpedo tubes. She was slightly slower than the typical Admiral in normal operation but matched the class’s upper figure when the machinery was forced.
Notable Point · 8:50-10:59
Machinery, dimensions, and forced-draught speed
Compare Benbow’s 10,600-ton hull and compound engines with the Admiral class’s speed under normal and forced draught.