Three main parachutes are deployed on each SRB. Each main parachute has a diameter of 136 feet. The main parachutes accompany each SRB to water impact, which occurs about 295 seconds after SRB separation at a speed of about 81 feet per second.”
Each chute has a diameter about 1 and half times the length of a basketball court and 81 ft. per sec is about 55 mph.
These are 3 huge chutes and the rocket is still coming in at 55 mph.
Yeah, that wasn’t a bad velocity, although it’s too fast for skydivers. :’)