It's about seven-tenths as fast as The Speed of Sound.
In other words, 474 knots is 0.7110 times the speed of The Speed of Sound, and the speed of The Speed of Sound is 1.410 times that amount.(in dry air at 20°C)
The speed of sound in dry air at 20°C (68°F) is 667 knots. Air is a relatively poor acoustic conductor, however, as sound will travel at speeds of between 2,910 knots to 3,030 knots in water, depending on its salinity.
It's about two-and-a-half times as fast as a Peregrine Falcon.
In other words, 474 knots is 2.260 times the speed of a Peregrine Falcon, and the speed of a Peregrine Falcon is 0.4420 times that amount.(a.k.a. Peregrine, a.k.a. Duck Hawk, Falco peregrinus)
The Peregrine Falcon can reach speeds of up to 210 knots when diving. Falcons are sometimes sent to scare smaller birds away from airports to improve air traffic safety and were used in World War II to intercept carrier pigeons used by enemy forces.
It's about two-and-a-half times as fast as The CRH (train).
In other words, the speed of The CRH (train) is 0.40 times 474 knots.(a.k.a. Hexie Hao, 和谐号, a.k.a. 和諧號, a.k.a. Héxié Hào, a.k.a. "Harmony")
The CRH-3 train which runs on China's Beijing-Tianjin Intercity Railway are capable of speeds up to 190 knots. Theses train can make the 120 km (74 mi) journey from Beijing to Tianjin in about 30 minutes.
It's about two-and-a-half times as fast as a Porsche 911.
It's about two-and-a-half times as fast as a Lamborghini Gallardo.
It's about two-and-a-half times as fast as The TGV (train).
In other words, the speed of The TGV (train) is 0.370 times 474 knots.(Train à Grande Vitesse) (for SNCF TGV Réseau, a.k.a. "Network" model, a.k.a. TGV-R) (maximum speed)
The TGV Réseau sets have a top speed of 170 knots. The train is capable of travelling the 425 km (264 mi) distance from Paris to Lyon in East-Central France in about two hours.
It's about two-and-a-half times as fast as an Arrow (archery).
In other words, 474 knots is 2.7190 times the speed of an Arrow (archery), and the speed of an Arrow (archery) is 0.36780 times that amount.(250 g arrow fired from 60#/28" bow)
A 250 gram arrow will reach speeds of approximately 174.30 knots when fired from a 60-lb, 28-inch draw bow . Archeological evidence from the Ahrensburg valley near Hamburg, Germany indicates that arrows have been used since at least 11 to 12,000 years ago.