Charges have been laid against two commercial jet boat drivers after a collision on the Dart River near Queenstown left a tourist with a broken collarbone. Several other passengers suffered bruising.
The incident in January this year involved boats from Dart River Jet Safaris, one carrying 11 passengers and heading upstream and the other, with the driver alone, heading down.
If convicted, the drivers could be jailed for up to a year or fined up to $10,000.
Dart River Jet Safaris general manager David Kennedy on Wednesday confirmed the drivers are no longed employed by the company, but would not say whether that is a result of the collision.
"After anything like this we review all of our training and our safety systems. We've made some minor adjustments to some of them, but nothing major."
Mr Kennedy would not comment on previous accidents, including one in 1998 in which 12 people were injured.