It's about as fast as a Gazelle.
(for Thomson's Gazelle, a.k.a. Eudorcas thomsoni, a.k.a. "Tommie", a.k.a. "Tommy")
A Thomson's gazelle can reach speeds of up to 40 knots. The gazelle's speed doesn't match that of its chief predator, the cheetah, but a gazelle's endurance usually ensures an escape in distances greater than 500 m (0.3 mi).
It's about as fast as a Hare.
(for European Brown Hare, a.k.a. Brown Hare, a.k.a. Lepus europaeus, a.k.a. Brown Hare)
The European Hare can run at speeds of up to 40 knots. While speed is a factor in their escapes, hares evade their chief predators — wolves, foxes, and golden eagles — by fleeing in a zigzag pattern.
It's about nine-tenths as fast as a Knuckleball (baseball).
In other words, 54 knots is 0.930 times the speed of a Knuckleball (baseball), and the speed of a Knuckleball (baseball) is 1.10 times that amount.(a.k.a. knuckler, a.k.a. floater, a.k.a. dancer, a.k.a. butterfly ball) (major league average)
The average speed of major league knuckleball pitch is 59 knots. Eddie Cicotte, who was later implicated in the 1919 Black Sox scandal, is credited with developing the pitch ca. 1906.
It's about nine-tenths as fast as a Cheetah.
It's about four-fifths as fast as a Hurricane.
In other words, 54 knots is 0.8390 times the speed of a Hurricane, and the speed of a Hurricane is 1.190 times that amount.(formally: Topical cyclone; a.k.a. typhoon)
A hurricane is defined by the US National Hurricane Center as a Northern Hemisphere tropical storm having one-minute average wind-speeds of at least 64.30 knots. Typhoons Tip (October, 1979) and Keith (October, 1997) and Hurricanes Camille (August, 1969) and Allen (August, 1980) jointly hold the record for highest tropical storm wind speeds at 167 knots.
It's about four-fifths as fast as a Curveball (baseball).
In other words, 54 knots is 0.820 times the speed of a Curveball (baseball), and the speed of a Curveball (baseball) is 1.20 times that amount.(a.k.a. hook, a.k.a. hammer, a.k.a. yakker) (major league average)
The average speed of major league curveball pitch is 65 knots. In the 1940's, debate over whether there really was a curve in the curveball pitch was settled with the conclusion that the ball does curve; however, an optical illusion caused by the spin of the ball and the batter's perception of motion exaggerates the extent of the curve.
It's about one-and-two-fifths times as fast as a Greyhound.
In other words, 54 knots is 1.380 times the speed of a Greyhound, and the speed of a Greyhound is 0.7250 times that amount.(a.k.a. English greyhound) (approximate maximum speed)
Greyhounds reach average race speeds of 39.10 knots. Despite their racing prowess, greyhounds are not considered energetic dogs — the typical greyhound race requires the dogs to run for less than 35 seconds.