Nome, Alaska - Crews worked to build a path Sunday over a half-mile of Bering Sea ice for the final leg of a Russian tanker's mission to deliver fuel to a town isolated amid one of the most severe Alaska winters in decades.

The tanker was moored roughly a half-mile from Nome's harbor after a Coast Guard cutter cleared a path for it through hundreds of miles of a slow journey stalled by thick ice and strong ocean currents.

The tanker got into position Saturday night, and ice disturbed by its journey had to freeze again so workers could create some sort of roadway to lay a hose that will transfer 1.3 million gallons of fuel from the tanker to the harbor in Nome.

On Sunday, workers spent the morning walking around the vessel and checking the ice to make sure it was safe to lay the hose, which will take about four hours, said Jason Evans, board chairman of the Sitnasuak Native Corp.

With the tanker and the Coast Guard ice breaker sitting just offshore and poised to deliver the fuel, Evans said the bulk of the mission's biggest challenges were now behind the crew.

Still, the final job of transferring fuel from the ship to the town comes with its own hurdles: In addition to waiting for the ice to freeze, crews must begin the transfer in daylight, a state mandate. But Nome has just five hours of daylight this time of year.

"In theory, it was possible and in reality, it now is done," Evans said of the journey.

A storm prevented Nome's 3,500 residents from getting a fuel delivery by barge in November. Without the tanker delivery, supplies of diesel fuel, gasoline and home heating fuel Nome are expected to run out in March and April, well before a barge delivery again in late May or June.

The tanker began its journey from Russia in mid-December, picking up diesel fuel in South Korea, then headed to Dutch Harbor, Alaska, where it took on unleaded gasoline. Late Thursday, the vessels stopped offshore and began planning the transfer to Nome, more than 500 miles from Anchorage on Alaska's west coast.

Despite the complicated logistics of delivering fuel by sea in winter, Sitnasuak opted for the extra delivery after determining that it would be much less costly and more practical than flying fuel to Nome.

Mark Smith, CEO of Vitus Marine LLC, the fuel supplier that arranged to have the Russian tanker and its crew deliver the fuel to Nome, described the challenges as substantial, partly because winter has been especially harsh in the region this year. He said that moving the tanker even with the help of the cutter through more than 300 miles of pack-ice was "a very profound obstacle."

"It seems that every day brought a new crisis," he said. "Opinion appeared to be divided in Nome where some welcomed the arrival of the tanker and others thought it was a manufactured and unnecessary crisis."

The crew of the 370-foot tanker Renda was working to ensure the safe transfer of the fuel through a segmented hose that will be laid on top of the ice to the harbor, located about 2,100 feet from the ship, Wadlow said in a telephone interview from Nome on Saturday night.

Once crews create a suitable path for the hose to rest on, its segments will have to be bolted together and inspected before the fuel can begin to flow.

Evans said once the hose is laid down, personnel will walk its entire length every 30 minutes to check it for leaks.

Each segment of hose will have its own spill containment area, and extra absorbent boom will be on hand in case of a spill.

Evans, however, cautioned that delivering the fuel is only half the mission.

"The ships need to transition back through 300 miles of ice," he said. "I say we're not done until the ships are safely back at their home ports" in Seattle and Russia.

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