Search and rescue teams say they have made no progress in seeking two men missing from a cray fishing vessel, the K-Cee, in Doubtful Sound.
The skipper Bruce Gordon and crew member Darren Allen have not been heard from since Monday.
Wreckage from the vessel was found on Tuesday.
Police, search and rescue staff and local residents on Thursday combed the shoreline of Secretary Island at the mouth of the sound without success.
The operation is being scaled down but information on tidal patterns and currents will be analysed to identify further areas for searching.