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A family involved in the Foveaux Strait trawler tragedy have rejected speculation that the Kotuku was overloaded.
Six people died in one of New Zealand's worst marine tragedies when the 17m trawler capsized on Saturday while ferrying members of Bluff's Topi whanau back to the mainland after a muttonbird hunting trip.
On Monday, a police dive recovered the bodies of Peter Topi, 78, Sailor Trow-Topi, 9, and Shain Topi-Tairi, 9.
The bodies of Ian Hayward, 52, Clinton Woods, 34, and Tania Topi, 41, were found on Sunday.
Kotuku skipper John Edminstin, 56, Paul Topi, 46, and Dylan Topi, 16, survived by swimming to nearby Women's Island.
After the recovery of the final three bodies from the submerged vessel, the spotlight has now turned to the cause of the accident.
Mr Edminstin has been unwilling to publicly discuss what happened on his fishing boat.
Police said the vessel was hit by two waves in a matter of seconds and there was no time for those on board to activate emergency beacons or to radio for help.
Life jackets were on board the vessel but are not believed to have been used.
There has been speculation in Bluff that the Kotuku was overloaded and that this may have contributed to its capsizing.
But Les Frisby, Mr Hayward's brother-in-law, said that appeared unlikely.
Mr Frisby said he understood that the load, put on to the boat by a helicopter, was "very light" for the size of the vessel. "The load that was on there may have shifted a bit."
The Kotuku appears to have rolled one way then rolled back the other way before tipping back over and capsizing.
"John is pretty cut up about it being called the worst marine disaster since the Wahine [ferry tragedy near Wellington in 1968]. His boat has been in two cyclones and survived those. For it to tip over in relatively moderate seas, he just can't understand it."
Mr Frisby has gone boating in the area many times and said: "You do get those rogue waves.
"Come past those islands and there is shallow water and in the shallower water you can get the odd 'boil-up'. It is rougher than in the deep water."
Yesterday, Maritime New Zealand was waiting for the right conditions to send divers down to the Kotuku. Transport Accident Investigation Commission investigator Doug Monks was on Stewart Island trying to establish what conditions were like on the day of the tragedy.
