The Coast Guard was called into a rescue operation - in inland Taranaki - after foul weather thwarted the rescue chopper.
A police search and rescue was launched around 10.30pm to assist St John ambulance when a 54-year-old woman, at Lake Rotorangi, had to be taken to hospital with severe abdominal pains.
SAR incident controller Wayne Rowlands said the patient's property could only be accessed by air or boat.
"Her partner had to climb a hill in order to gain cellphone coverage," Rowlands said.
The South Taranaki Coast Guard deployed its incident command truck, directing a boat, four Coast Guards, a St John paramedic and two police.
The paramedic was taken along the lake to the property to transfer the patient onto the boat.
"Communications were an issue in this remote area and this showed the value of the South Taranaki Coast Guard command vehicle, the equipment that it carries and the quality of staff," Rowlands said.
The woman is believed to be in a stable condition in hospital.
- Taranaki Daily News
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