Brassey's gives Tiger a speed of 30 knots, a source cited through Wikipedia gives 28, and R. A. Burt gives 29. Burt also lists speed-dependent radii of action: 2,800 nautical miles at 25 knots, 4,000 at 22, 4,500 at 20, 4,900 at 18, and 5,200 at 12. Burt's 29-knot figure is treated as the most convincing, though the disagreement remains unresolved. Precise-looking technical data can vary even between standard naval references.
Notable Point · 13:24-15:03
Why published speeds for HMS Tiger disagree
Published 28-, 29-, and 30-knot figures show why one specification should not be accepted without comparing its source.