The fishermen on a boat missing off the cost of Gisborne are "very experienced" and are regularly out on the water, the Tatapouri fishing club president says.
The search continues for the fishing boat which was reported missing off the coast of Gisborne on Monday.
A concerned fishing party contacted police just before 4pm, after the boat failed to return from a day trip.
Initially, it was believed there were two people onboard the 7m vessel, but Maritime New Zealand's Rescue Coordination Centre on Tuesday said it had subsequently confirmed three people were onboard.
The last known communication of the missing boat was with another vessel before 10am on Monday, when it was about 20km off shore.
A helicopter joined the search on Tuesday between Gisborne and the Māhia Peninsula.
The Rescue Coordination Centre said more aircraft would join the search as conditions allowed.
Operation manager Michael Clulow said heavy rain, strong winds and large seas were forecast in the area on Tuesday, making the search challenging.
Gisborne harbourmaster Peter Buell said conditions were not expected to improve until Friday.
"The swells aren't going to be abating probably until Thursday, Friday, and there's more weather coming so we're not expecting to be in ... any fine conditions until Friday," he said.
"Just really unfortunate conditions to be able to conduct a search."
The 7m vessel was on the smaller side, which meant it would likely be experiencing difficulty in rough conditions, Buell said.
Tatapouri fishing club president Roger Faber raised the alarm when the boat failed to return to shore.
Terrible weather conditions will prevent Coastguard from continuing its sea search today, Faber said.
Helicopters were carrying out a shoreline search, but the sea was too rough to tackle, he said.
"We've got very heavy fog, heavy rain, in shore and off shore, the nor'easter is blowing very strong, it's predicted to get a lot worse this morning ... up to 50 knots with eight metre seas," he said.
"There's no way that they're putting anyone to sea to do a search in those conditions."
The missing crew's whānau were on tenterhooks as they waited for news, he told Midday Report.
Faber hoped the boat had broken down and been pushed ashore south of Gisborne "and they are found well down in that area".
"...even if they're in the water they'd get pushed down towards the Māhia Peninsula area."
Bad weather hampers search for missing fishing boat
'Just a matter of sitting with fingers crossed'
Faber said those missing were members of the club and "very experienced" fishermen.
"They do know what they're doing, they're out there regularly."
Three boats had headed out together Monday morning, with Faber on board one of them. Two boats - his included - decided to "pull the pin" about 11am in deteriorating weather conditions, and tried to get in touch with the now missing boat to let them know, but did not hear back.
Faber's last communication with the missing boat was about 9.30am Monday, when they told him of their plans to head towards Māhia.
"We're hoping that they've been pushed ashore down that way somewhere, and are sitting on shore where there's no communications, and they're found down there."
The whānau of the three men were down by the boat ramp in Gisborne's inner harbour, Faber said.
"They're all coming back to the fishing club for a coffee, and it's really just a matter of sitting with fingers crossed, hoping for some good news."
Bad weather hampers search for missing fishing boat
Coastguard Gisborne, the Gisborne Rescue Helicopter, and several vessels supported the initial search on Monday evening.
Overnight, a NZDF P8 Poseidon undertook a radar search off Poverty Bay, Northern Hawke's Bay, and the Māhia Peninsula.