OSLO — Two of Norway’s greatest cultural treasures, the preserved Viking longships Oseberg and Gokstad, managed to survive sea voyages more than a thousand years ago, followed by centuries interred in burial mounds alongside various dignitaries and objects like a sled, board games and the remains of peacocks.

But even after they were dug up, restored and put in a museum, life has not gotten much easier for the longships. Surging tourist numbers — their display in the Viking Ship Museum in Oslo was meant to accommodate 40,000 visitors annually, but gets more than 500,000 — have brought dust, vibrations and temperature fluctuations that threaten the boats’ fragile wood.

Now, after pressure from archaeologists and museum officials, the Norwegian government has earmarked around $200 million to build a new home for the ships next door — and for the delicate operation of moving them about 50 yards. The first $4 million is to be released next year.

“This was the right decision,” said Jesper Stub Johnsen, deputy director of the National Museum of Denmark and the chairman of an international commission formed in 2012 to evaluate the risks of moving the ships. “The Viking ships are unique, even in an international context.” His commission examined four possibilities, including doing nothing, restoring the ships in place or moving them to another site farther away.