"I have been with the Bay as a player for two seasons. I worked for them as a RDO [rugby development officer] for five years, and I sort of have done everything I can do in the Bay," Hames said.
"There were some frustrating things to do with that and there can be frustrating things everywhere. I want to learn some new things with a new experience and hopefully a really successful one.
"I really want to get some development out of the way Tasman play. Most importantly, hopefully win the premiership next year. That's a big driver why I am going down."
Developing his coaching skills is a huge factor in his decision to sign with Tasman.
"I hear Kieran Keane is a pretty awesome coach and so is Leon MacDonald. You can just see it in their results. I want to learn some new coaching styles and other stuff. I have been involved in the coaching set-up here for a long time."
Hames would one day like to return to play for the Steamers but he has higher ambitions ahead of him.
"It would be a huge achievement if I get to wear even one All Black jersey. It has been a long journey.
"I had a pretty tough upbringing so to get there from where I have come from would be huge.
"Hopefully I can inspire other kids to do the same."