"I have always admired the Masters and I'm really happy to be old enough to compete this year," Schimanski said.
"I will be competing against my sister Jaimee and I think that will be fun."
Neil Forlong, former swim team manager for the Whanganui Swim Club, is organising the Masters competitions and said there would be some interesting friendly rivalry amongst the swimmers competing in the 20 to 25 years age group.
"They are old friends who competed together when they were younger so it will be fun for them to compete against each other as adults.
"It is hard to come back to competitions when they have been away from their training regimes for a few years."
One of Schimanski's old teammates is Forlong's daughter Elena who excelled in the butterfly at the national competitions in Auckland in 2015.
"Jacob Smith was another really good swimmer from that group who is competing in the Masters," Forlong said.
"There is bound to be some good banter and they will enjoy catching up with each other I'm sure."
Forlong said he believes the oldest swimming competitor in the Masters Games this year is 89.