Obnoxious hut behaviour by jetboaters in Fiordland has led to a formal complaint with the Department of Conservation.
A tramper laid the complaint over the antics of a group of jetboaters who recently stayed at Lake Alabaster Hut on the Hollyford Track in Fiordland National Park, DOC says.
The tramper complained after staying in the 26-bunk hut along with the group. The group had brought with them a large amount of alcohol.
It is alleged the group was unnecessarily noisy, rude to other hut occupants and went hunting at night while drunk.
While there was nothing criminal carried out, the behaviour will not be tolerated, says DOC Te Anau operations manager Greg Lind.
He had also received similar reports about bad behaviour from jetboaters at the Wairaurahiri Hut in southern Fiordland.
"Offensive behaviour, especially when it intimidates other users of DOC facilities, is unacceptable," Mr Lind said.
"We have spoken with the group leader concerned."
Jet Boating NZ vice president Steve Kirner says he fully supports DOC's stance.
"Sadly, isolated incidents like this, regardless of whether they are JBNZ members, reflect badly on our organisation and jet boaters in general."
Additional DOC staff were being deployed to popular visitor locations throughout Fiordland over the busy summer season, Mr Lind said.
"DOC will be taking a hard line on any antisocial behaviour."