A day's fishing in the Marlborough Sounds has ended with a broken leg, a mayday signal and passengers forced to bail water from the vessel.
A charter fishing boat was heading to French Pass to get help for a passenger with a broken leg when it began taking on water, Rescue Coordination Centre's Steve Rendle said.
The boat anchored off Rangitoto Island, near D'Urville Island, and passengers began bailing water and sent a mayday distress signal just after 1pm on Thursday.
A helicopter flew the injured person to Nelson Hospital, Mr Rendle said.
The boat with the remaining four passengers aboard is currently being towed to Nelson via French Pass.