"This process also identified other leaders within our mix that we need to take advantage of, and future proofing ourselves," Taurua said.
"Laura was a player that other team members certainly looked up to last year in terms of her passion and work ethic. She took the captaincy role in her stride and led from the front with her expectations and standards set on court."
Langman, who made her debut in 2005, stepped back in to the international game in 2018 where she made an immediate impact for the Silver Ferns through the midcourt.
Kopua is also making a return to the game having last played in the black dress in 2015 before taking time away to start a family.
Taurua said the defender would bring many qualities to the vice-captaincy role having been a Silver Fern for over a decade.
"She is excited to be back. Both Casey and Laura bring different attributes to the team, they complement each other and they both know what is required on the international stage, they are proven leaders and know how to get the best out of any team and most importantly themselves."
The Silver Ferns open their Netball Quad Series campaign against the England Roses in Liverpool at 7am on Monday morning.
