- 450 ferried from isolated Kaikoura by navy ship
- Hundreds more tourists, residents helicoptered out
- Dozens of Wellington buildings suffer structural damage
(Adds detail on evacuees, marine impact, dammed rivers, paragraphs 3-5, 16-17)
Hundreds of survivors stranded by a huge earthquake that struck central New Zealand three days ago reached Christchurch by a naval ship early on Thursday, as engineers in the capital, Wellington, assessed the state of dozens of damaged buildings.
Around 450 tourists and residents from the small seaside town of Kaikoura were taken by the New Zealand navy's multi-role vessel HMNZS Canterbury to Christchurch, the South Island's largest city, overnight.
Most tourists had continued their journeys, but around 130 people were being housed temporarily in Canterbury University's student halls.
A student volunteer army, formed after a 6.3 magnitude tremor that killed almost 200 people in Christchurch in 2011, had mobilised to help the evacuees, said university spokeswoman Margaret Agnew.
"They've set up to feed people, house people, they've got all the facilities they need," she said. "We've set them up with wifi, that was one of the things they were asking for."
Kaikoura, a fishing community and popular whale-watching base ringed by steep mountains, had been completely cut off by large landslides that covered road and rail links.
Air Force NH90 helicopters joined a fleet of private helicopters that have ferried hundreds more people from the town to Christchurch and outlying areas 150 km (90 miles) south over the past two days.
Workers cleared an emergency inland road into Kaikoura, allowing water and other supplies to be trucked in for the first time.
Two people were killed and dozens injured by the magnitude 7.8 quake - two nearly simultaneous tremors that ruptured faultlines across the top of the ruggedly beautiful South Island.
The timing of the quake - shortly after midnight on Sunday - combined with the epicentre being in a sparsely populated region prevented a higher toll, authorities said. A tsunami alert that followed sent many rushing for higher ground before the threat was lowered.
In Wellington, authorities said as many as 60 buildings had suffered structural damage, including properties housing Statistics New Zealand and the Defence Force.
Another multi-storey building near the parliament complex would have to be taken down, engineers said.
Wellington is bisected by several fault lines, and large areas of its business district are built on reclaimed land, raising questions about building practices in the capital despite some of the world's strictest codes.
"There are some sites that are really not suitable for certain types of structures. For example, I would seriously question putting a hospital or essential services on reclaimed land," Paul Campbell, the president of the New Zealand Structural Engineering Society, told Radio New Zealand.
The force of the tremor was most evident in the upper South Island, where parts of the coast moved metres and geological features were altered.
A popular New Zealand fur seal colony near Kaikoura, where pups could often be seeing playing in a waterfall in a nearby stream, was destroyed by a landslide, Department of Conversation officials said.
A team of volunteers rescued thousands of abalone, a large shellfish known locally as paua, that had been left high and dry when sections of the rocky coast were shunted metres out of the water by the force of the quake.
Civil Defence warned people to stay away from the Hapuku and Ure Rivers, further north, where landslides from the earthquakes had blocked the rivers.
"There is a 150m high dam caused by the earthquakes which could rapidly fail, spilling water and debris from the new 'lake' over (or through) the dam due to heavy rain and building pressure," Civil Defence Canterbury said on its Facebook page.
Storms lashed the region on Thursday and seismologists were still recording hundreds of aftershocks - some 2,000 have rattled the region since the initial tremor shortly after midnight on Sunday.
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